1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1966 TO SEPTEMBER 1967 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 46 44 86 104 48 69 42 36 72 46 55 47 2 41 45 81 124 51 65 41 34 66 61 38 46 3 33 31 78 123 58 61 20 34 84 57 42 46 4 31 27 73 117 52 60 11 38 142 48 66 42 5 29 37 70 107 53 59 15 45 213 38 142 45 6 25 55 67 90 77 59 13 43 205 31 78 64 7 23 51 64 79 258 129 14 41 121 91 56 51 8 22 45 64 75 172 110 12 39 81 193 42 36 9 22 47 65 76 136 94 12 36 63 191 48 700 10 25 52 69 128 124 114 14 34 53 126 75 500 11 40 58 78 122 111 98 14 32 49 78 146 350 12 44 57 78 108 114 118 14 31 52 53 132 150 13 37 68 91 91 103 238 14 29 50 40 115 80 14 26 57 86 118 84 185 14 28 55 54 75 60 15 23 50 83 123 66 117 14 26 45 46 56 50 16 22 45 79 153 60 79 20 32 40 40 46 46 17 22 37 77 148 57 50 20 32 36 34 66 40 18 22 32 76 124 66 30 20 32 33 30 72 58 19 60 30 74 90 65 21 25 30 36 51 59 62 20 41 29 48 75 98 19 33 24 34 55 52 44 21 28 36 34 71 110 28 31 22 33 72 70 36 22 30 44 31 65 87 31 29 207 28 98 147 34 23 37 47 45 63 83 34 30 414 30 76 280 33 24 39 49 94 74 78 51 34 414 58 52 862 30 25 81 51 93 89 69 54 32 201 36 49 598 28 26 84 55 89 85 64 50 86 106 48 57 274 28 27 75 60 82 81 62 50 147 73 73 137 156 36 28 57 83 86 74 71 52 80 60 67 131 101 54 29 46 80 144 67 --- 50 60 52 56 107 78 54 30 43 90 101 59 --- 48 45 51 45 94 66 61 31 43 --- 105 53 --- 46 --- 61 --- 74 55 --- TOTAL 1197 1492 2391 2956 2477 2269 956 2337 2004 2310 4148 2911 MEAN 38.6 49.7 77.1 95.4 88.5 73.2 31.9 75.4 66.8 74.5 134 97.0 MAX 84 90 144 153 258 238 147 414 213 193 862 700 MIN 22 27 31 53 48 19 11 22 28 30 38 28 CFSM 0.65 0.83 1.29 1.60 1.48 1.23 0.53 1.26 1.12 1.25 2.25 1.63 IN. 0.75 0.93 1.49 1.85 1.55 1.42 0.60 1.46 1.25 1.44 2.59 1.82 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1967 TO SEPTEMBER 1968 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 61 88 90 68 65 73 43 18 26 25 104 16 2 50 78 68 83 64 73 27 28 49 25 108 16 3 37 58 75 80 66 65 24 36 82 65 80 16 4 32 51 68 84 62 58 28 30 59 156 57 16 5 31 43 63 80 61 54 35 25 44 144 45 16 6 34 40 64 78 60 51 37 22 34 104 39 23 7 33 38 69 86 59 49 39 21 116 76 32 24 8 31 36 48 78 58 45 39 21 244 58 44 20 9 31 35 33 71 58 38 42 22 316 65 59 20 10 35 58 43 280 57 44 41 21 336 205 71 20 11 35 58 51 513 57 54 32 21 219 237 70 19 12 37 41 57 320 56 102 31 25 135 160 58 17 13 37 36 58 294 55 101 32 23 103 135 43 15 14 35 34 57 232 54 117 27 41 87 110 40 14 15 33 33 57 170 53 172 18 63 66 86 36 14 16 32 32 57 135 52 137 36 90 51 64 29 13 17 31 32 54 114 52 114 54 101 43 53 24 13 18 33 33 51 103 52 95 40 94 65 79 21 13 19 33 33 48 94 50 90 31 67 75 63 19 13 20 33 33 45 88 47 55 13 52 47 47 17 13 21 33 40 43 84 44 33 13 41 40 37 16 13 22 35 60 43 81 44 35 13 35 37 25 15 12 23 39 69 44 76 43 33 18 31 37 17 15 12 24 40 138 43 109 43 31 31 29 34 22 14 12 25 43 208 43 106 43 31 35 28 32 25 18 12 26 41 156 42 97 43 34 32 32 31 27 26 14 27 35 129 42 86 43 45 31 38 29 27 27 14 28 32 106 70 78 43 58 32 36 27 29 23 13 29 30 99 75 75 61 54 167 35 26 37 22 14 30 30 105 78 72 --- 51 119 32 25 35 19 21 31 44 --- 73 69 --- 46 --- 29 --- 49 17 --- TOTAL 1116 2000 1752 3984 1545 2038 1160 1187 2515 2287 1208 468 MEAN 36.0 66.7 56.5 129 53.3 65.7 38.7 38.3 83.8 73.8 39.0 15.6 MAX 61 208 90 513 66 172 167 101 336 237 108 24 MIN 30 32 33 68 43 31 13 18 25 17 14 12 CFSM 0.60 1.12 0.95 2.16 0.89 1.10 0.65 0.64 1.41 1.24 0.65 0.26 IN. 0.70 1.25 1.09 2.49 0.96 1.27 0.72 0.74 1.57 1.43 0.75 0.29 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1968 TO SEPTEMBER 1969 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 16 28 42 70 61 96 79 48 43 40 35 25 2 14 28 56 68 60 93 75 47 43 46 34 40 3 13 32 66 61 72 87 75 46 42 31 37 50 4 12 65 87 55 71 77 75 44 28 26 90 80 5 11 84 80 51 68 68 77 43 17 25 135 80 6 11 78 69 47 68 87 108 42 17 23 112 70 7 70 71 60 44 68 135 111 40 17 27 91 60 8 58 57 54 42 81 122 108 37 16 34 80 50 9 48 56 49 42 108 111 93 42 17 43 70 45 10 44 93 45 42 93 98 82 39 17 47 60 40 11 38 110 42 40 79 82 76 40 24 41 45 35 12 36 176 40 40 69 72 69 40 84 36 45 30 13 35 131 39 39 61 67 68 38 74 32 45 30 14 33 98 44 38 56 63 73 39 50 27 45 25 15 31 76 45 37 59 60 95 43 46 25 60 25 16 32 63 45 37 116 60 472 51 45 24 70 25 17 34 60 42 36 142 63 412 52 42 23 70 25 18 38 72 40 38 135 202 288 62 38 22 60 35 19 144 76 38 64 123 350 222 430 36 23 50 50 20 155 70 37 235 106 279 162 428 36 23 45 60 21 109 61 35 256 91 203 130 244 40 22 40 55 22 64 55 42 184 83 151 104 148 40 24 35 50 23 52 51 58 126 98 126 88 128 39 28 30 50 24 42 47 58 96 94 212 80 85 96 51 30 50 25 36 46 54 82 89 197 75 64 113 100 30 50 26 32 45 47 73 81 160 70 72 74 106 30 40 27 30 43 42 68 72 133 55 64 49 79 25 35 28 29 41 60 64 68 116 43 54 36 59 25 35 29 28 42 62 61 --- 103 41 50 34 47 25 30 30 28 41 57 60 --- 95 45 46 28 37 25 30 31 28 --- 61 62 --- 85 --- 45 --- 35 25 --- TOTAL 1351 1996 1596 2258 2372 3853 3551 2651 1281 1206 1599 1305 MEAN 43.6 66.5 51.5 72.8 84.7 124 118 85.5 42.7 38.9 51.6 43.5 MAX 155 176 87 256 142 350 472 430 113 106 135 80 MIN 11 28 35 36 56 60 41 37 16 22 25 25 CFSM 0.73 1.12 0.86 1.22 1.42 2.09 1.99 1.43 0.72 0.65 0.87 0.73 IN. 0.84 1.25 1.00 1.41 1.48 2.40 2.22 1.65 0.80 0.75 1.00 0.81 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1969 TO SEPTEMBER 1970 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 80 66 37 57 51 44 284 22 33 15 25 26 2 100 52 26 55 69 43 218 21 28 15 23 25 3 90 51 25 56 85 43 168 21 26 15 26 25 4 70 76 25 52 84 43 133 26 25 15 26 24 5 60 61 13 46 82 51 114 26 31 15 27 25 6 50 45 15 72 76 67 100 31 54 18 23 24 7 40 35 22 80 71 57 91 30 35 17 21 25 8 35 25 33 76 67 57 84 28 25 18 21 26 9 30 12 51 67 66 52 81 25 20 18 37 25 10 30 14 114 59 62 48 80 23 18 18 79 24 11 30 19 138 51 59 49 57 22 16 18 142 58 12 30 57 126 57 54 46 43 20 16 18 182 64 13 25 90 100 57 50 45 41 20 15 18 299 83 14 26 36 82 64 46 42 42 19 14 18 197 80 15 25 13 72 66 42 39 43 26 14 19 122 55 16 24 14 61 64 60 38 45 29 13 18 76 42 17 22 28 49 62 84 38 44 57 13 18 57 34 18 22 37 29 60 79 48 44 52 13 20 45 30 19 21 38 25 61 48 72 42 39 13 20 68 27 20 24 39 24 69 24 158 47 31 13 16 92 25 21 27 43 15 79 33 340 49 25 15 30 65 25 22 26 44 29 80 39 545 45 22 20 33 49 24 23 25 42 38 78 42 368 39 19 25 42 40 24 24 24 42 43 73 41 229 34 18 25 82 38 23 25 24 40 51 66 46 99 31 30 20 105 49 23 26 23 39 64 56 51 84 27 101 20 82 42 22 27 23 38 64 48 48 103 26 93 20 76 39 28 28 23 38 61 43 46 95 24 80 20 55 36 80 29 22 38 55 43 --- 82 24 70 15 42 33 93 30 22 37 51 54 --- 203 23 48 15 34 30 75 31 41 --- 46 52 --- 366 --- 38 --- 28 28 --- TOTAL 1114 1209 1584 1903 1605 3594 2123 1112 630 956 2037 1164 MEAN 35.9 40.3 51.1 61.4 57.3 116 70.8 35.9 21.0 30.8 65.7 38.8 MAX 100 90 138 80 85 545 284 101 54 105 299 93 MIN 21 12 13 43 24 38 23 18 13 15 21 22 CFSM 0.60 0.68 0.86 1.03 0.96 1.95 1.19 0.60 0.35 0.52 1.10 0.65 IN. 0.70 0.75 0.99 1.19 1.00 2.24 1.33 0.69 0.39 0.60 1.27 0.73 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1970 TO SEPTEMBER 1971 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 56 170 40 93 168 187 128 116 72 69 217 43 2 45 119 41 85 200 364 121 99 64 170 148 42 3 37 92 41 76 109 982 131 91 58 588 106 42 4 36 78 41 68 88 910 84 85 52 224 85 39 5 48 72 40 70 103 436 141 81 48 148 80 39 6 74 63 42 70 99 289 199 78 46 185 107 39 7 62 51 42 64 163 235 169 76 46 162 96 48 8 45 41 40 69 282 202 154 77 45 141 79 55 9 37 37 38 113 296 181 147 81 43 260 72 52 10 33 64 37 113 221 164 156 80 43 298 67 54 11 27 87 38 103 138 160 138 77 43 143 61 51 12 24 88 38 91 109 153 113 77 43 100 61 61 13 21 74 39 80 103 145 99 184 45 86 61 76 14 20 62 40 72 98 139 97 117 46 82 56 67 15 26 57 39 109 90 147 98 106 51 76 57 55 16 28 51 255 116 85 146 93 122 48 65 184 49 17 28 46 336 105 80 135 81 115 54 55 458 45 18 33 44 196 93 52 127 72 102 68 49 458 57 19 32 42 132 80 26 127 66 86 86 55 272 172 20 88 43 106 72 30 124 62 75 94 62 150 175 21 133 45 91 65 29 119 60 77 75 94 104 119 22 104 43 78 63 136 116 58 69 74 147 84 95 23 77 43 72 65 430 120 157 62 92 117 72 74 24 58 42 69 76 336 114 239 58 100 100 66 64 25 188 40 66 115 218 143 176 54 90 95 60 55 26 159 38 62 277 169 352 137 52 67 172 55 51 27 104 38 58 194 168 313 115 49 104 193 57 49 28 77 38 56 134 152 264 257 51 102 173 54 84 29 62 38 60 158 --- 247 211 62 89 284 51 80 30 150 40 68 143 --- 233 151 70 75 193 48 57 31 286 --- 90 121 --- 205 --- 77 --- 193 45 --- TOTAL 2198 1786 2391 3153 4178 7579 3910 2606 1963 4779 3571 1989 MEAN 70.9 59.5 77.1 102 149 244 130 84.1 65.4 154 115 66.3 MAX 286 170 336 277 430 982 257 184 104 588 458 175 MIN 20 37 37 63 26 114 58 49 43 49 45 39 CFSM 1.19 1.00 1.29 1.71 2.50 4.10 2.19 1.41 1.10 2.59 1.93 1.11 IN. 1.37 1.11 1.49 1.97 2.61 4.73 2.44 1.63 1.23 2.98 2.23 1.24 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1971 TO SEPTEMBER 1972 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 158 118 99 34 166 48 92 24 55 85 94 23 2 98 124 84 40 200 85 86 29 51 67 63 20 3 62 90 162 63 233 62 80 45 47 59 49 20 4 57 68 235 70 245 66 77 60 45 79 41 20 5 57 67 218 78 212 66 69 57 40 93 35 21 6 46 61 229 76 168 55 65 53 43 80 31 20 7 43 56 141 73 146 60 66 41 51 66 31 20 8 40 51 123 71 124 75 66 51 41 57 56 20 9 38 48 113 72 111 72 63 67 37 51 64 20 10 115 46 108 229 102 51 62 60 34 47 132 19 11 101 46 100 430 96 15 62 54 31 44 95 18 12 84 46 92 384 106 26 62 48 30 40 71 18 13 66 45 84 386 143 34 60 44 29 37 57 18 14 56 45 81 528 154 24 60 75 29 40 52 19 15 52 45 80 515 132 15 58 116 24 52 48 18 16 49 49 80 372 111 24 56 137 21 55 47 17 17 60 48 81 214 109 24 52 92 20 83 39 20 18 71 46 74 153 111 52 52 72 19 54 29 21 19 64 47 66 139 131 76 53 57 32 45 27 19 20 57 47 90 131 163 116 52 66 79 39 27 18 21 66 46 102 137 168 109 48 61 166 35 26 17 22 91 46 99 135 150 106 55 69 166 52 25 15 23 93 44 91 130 138 89 54 80 110 43 24 14 24 125 93 90 120 138 74 54 69 71 36 23 14 25 173 104 90 112 98 64 62 65 59 36 23 14 26 172 95 86 104 87 66 42 62 61 35 22 14 27 138 84 84 96 91 72 16 55 97 43 24 15 28 103 76 79 90 91 73 16 51 136 62 24 17 29 76 144 76 120 73 67 16 56 122 102 24 19 30 69 127 71 150 --- 71 20 60 118 78 22 18 31 80 --- 38 170 --- 98 --- 59 --- 80 21 --- TOTAL 2560 2052 3246 5422 3997 1935 1676 1935 1864 1775 1346 546 MEAN 82.6 68.4 105 175 138 62.4 55.9 62.4 62.1 57.3 43.4 18.2 MAX 173 144 235 528 245 116 92 137 166 102 132 23 MIN 38 44 38 34 73 15 16 24 19 35 21 14 CFSM 1.39 1.15 1.76 2.93 2.31 1.05 0.94 1.05 1.04 0.96 0.73 0.31 IN. 1.60 1.28 2.03 3.38 2.49 1.21 1.05 1.21 1.16 1.11 0.84 0.34 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1972 TO SEPTEMBER 1973 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 19 40 66 60 105 90 548 80 52 57 72 26 2 18 34 66 60 197 110 325 71 51 69 128 26 3 18 33 65 60 500 140 223 62 49 68 162 38 4 20 33 63 60 800 200 181 59 45 63 134 38 5 42 33 63 62 500 300 152 51 39 62 110 36 6 48 32 45 62 200 500 139 47 58 60 99 35 7 36 37 150 64 130 600 286 47 147 62 97 34 8 28 86 130 70 100 500 508 92 103 54 102 32 9 22 84 110 80 90 386 320 118 158 52 75 87 10 19 70 100 70 100 293 227 93 608 47 59 160 11 18 59 90 65 110 229 188 96 598 43 50 99 12 17 51 70 62 120 348 168 122 293 43 45 81 13 17 45 60 62 140 301 154 101 212 42 41 72 14 16 51 80 60 150 223 142 89 179 45 39 88 15 16 52 100 60 160 182 134 76 153 49 40 72 16 16 60 120 75 160 159 123 57 163 46 36 61 17 16 75 100 90 140 181 115 43 137 49 35 52 18 16 40 90 101 130 158 102 52 117 48 32 47 19 16 40 70 107 110 141 101 55 97 44 28 43 20 16 131 60 113 95 128 91 55 90 36 34 39 21 15 114 90 104 90 134 80 60 100 32 49 39 22 15 85 120 114 85 132 73 55 308 29 65 38 23 15 66 150 109 80 127 69 55 248 35 54 39 24 24 54 140 98 75 120 100 55 157 103 45 37 25 33 82 120 86 70 124 100 60 150 111 40 36 26 37 110 100 95 70 130 100 70 131 81 37 42 27 42 94 85 142 70 127 163 60 98 60 36 39 28 54 76 75 158 70 126 132 60 82 54 33 39 29 48 64 65 169 --- 123 110 60 84 55 32 38 30 49 60 60 143 --- 138 91 65 63 51 29 49 31 49 --- 60 119 --- 366 --- 59 --- 45 26 --- TOTAL 815 1891 2763 2780 4647 6816 5245 2125 4770 1695 1864 1562 MEAN 26.3 63.0 89.1 89.7 166 220 175 68.5 159 54.7 60.1 52.1 MAX 54 131 150 169 800 600 548 122 608 111 162 160 MIN 15 32 45 60 70 90 69 43 39 29 26 26 CFSM 0.44 1.06 1.50 1.50 2.78 3.69 2.93 1.15 2.67 0.92 1.01 0.87 IN. 0.51 1.18 1.72 1.74 2.90 4.25 3.27 1.33 2.98 1.06 1.16 0.97 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1973 TO SEPTEMBER 1974 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 146 43 33 390 153 82 69 30 47 17 22 25 2 94 41 33 409 145 77 58 29 69 19 41 25 3 79 45 37 261 145 75 52 29 59 19 57 41 4 63 44 40 194 125 72 89 29 55 19 44 57 5 52 40 44 275 110 69 234 37 49 19 87 43 6 43 36 49 229 111 67 177 32 42 21 200 115 7 38 34 48 181 151 66 131 29 69 21 157 97 8 36 44 85 146 172 66 105 31 127 27 123 75 9 34 50 102 130 149 65 82 30 81 29 89 56 10 33 42 91 121 128 64 80 24 51 40 65 43 11 32 42 77 120 114 59 73 19 39 30 50 34 12 30 42 66 112 114 57 65 187 32 24 40 29 13 30 42 75 104 107 57 63 173 28 20 66 26 14 28 42 90 111 102 55 62 117 24 18 176 24 15 27 42 104 123 152 54 60 80 22 16 93 22 16 27 42 153 116 270 59 56 62 21 16 58 21 17 26 42 186 109 260 61 52 47 19 37 43 34 18 24 42 143 100 193 66 49 39 19 58 40 32 19 23 42 113 93 166 73 45 35 18 34 33 26 20 22 42 165 91 149 68 43 33 19 26 28 23 21 23 44 172 124 135 76 40 31 22 67 24 21 22 24 50 140 120 161 75 39 30 21 57 21 21 23 25 55 115 112 139 66 38 50 19 40 20 19 24 25 50 98 115 127 56 37 54 18 32 18 18 25 25 48 90 119 106 84 38 48 18 40 16 17 26 25 48 87 112 84 76 37 52 17 42 16 17 27 24 46 84 115 79 72 36 62 18 37 15 16 28 26 45 82 117 82 65 35 56 23 41 21 17 29 30 42 79 197 --- 96 36 51 19 32 18 17 30 36 38 98 263 --- 98 34 40 18 31 17 17 31 44 --- 140 204 --- 87 --- 34 --- 26 16 --- TOTAL 1194 1305 2919 5013 3929 2163 2015 1600 1083 955 1714 1028 MEAN 38.5 43.5 94.2 162 140 69.8 67.2 51.6 36.1 30.8 55.3 34.3 MAX 146 55 186 409 270 98 234 187 127 67 200 115 MIN 22 34 33 91 79 54 34 19 17 16 15 16 CFSM 0.65 0.73 1.58 2.71 2.35 1.17 1.13 0.87 0.61 0.52 0.93 0.57 IN. 0.75 0.81 1.82 3.13 2.45 1.35 1.26 1.00 0.68 0.60 1.07 0.64 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1974 TO SEPTEMBER 1975 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 16 13 138 129 93 147 137 93 98 27 186 34 2 16 13 107 111 88 149 152 103 77 26 130 32 3 15 13 83 95 92 184 736 258 66 24 91 30 4 14 13 65 110 213 149 469 326 50 22 75 29 5 13 15 54 106 228 126 302 245 46 21 66 28 6 13 16 49 98 187 121 213 184 44 22 62 28 7 13 17 66 90 156 169 181 170 40 43 60 32 8 13 17 135 98 138 188 170 153 37 35 61 31 9 13 18 112 160 125 146 161 129 32 42 57 29 10 13 17 90 153 114 136 157 125 36 38 75 28 11 13 18 72 228 103 147 266 127 42 40 50 43 12 13 19 63 228 116 138 213 107 76 37 34 60 13 13 19 58 328 108 164 173 109 58 45 30 63 14 13 18 54 243 96 237 188 97 45 258 30 58 15 13 21 90 201 88 196 243 120 37 858 179 45 16 13 21 137 165 90 206 203 128 32 390 102 39 17 13 21 111 146 114 194 174 181 30 234 62 64 18 12 114 89 136 172 237 151 180 38 225 48 239 19 12 101 99 129 584 248 137 130 70 243 41 184 20 12 139 158 125 341 216 133 92 53 194 34 127 21 11 116 153 112 237 183 119 47 55 152 33 128 22 11 79 124 105 191 168 113 65 49 147 31 122 23 11 58 94 102 198 158 100 62 38 162 30 117 24 11 46 92 142 240 213 92 55 31 494 31 111 25 11 40 102 191 210 220 85 51 33 386 30 94 26 11 37 95 181 173 187 72 48 30 243 27 72 27 11 33 91 150 152 164 64 55 31 170 66 59 28 12 32 120 129 145 152 62 55 32 134 86 52 29 12 31 136 118 --- 147 66 34 30 142 52 49 30 12 56 135 109 --- 157 60 33 28 294 46 46 31 12 --- 144 99 --- 145 --- 56 --- 261 38 --- TOTAL 391 1171 3116 4517 4792 5392 5392 3618 1364 5409 1943 2073 MEAN 12.6 39.0 101 146 171 174 180 117 45.5 174 62.7 69.1 MAX 16 139 158 328 584 248 736 326 98 858 186 239 MIN 11 13 49 90 88 121 60 33 28 21 27 28 CFSM 0.21 0.65 1.69 2.44 2.87 2.92 3.02 1.96 0.76 2.93 1.05 1.16 IN. 0.24 0.73 1.94 2.82 2.99 3.37 3.37 2.26 0.85 3.38 1.21 1.29 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1975 TO SEPTEMBER 1976 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 47 30 47 146 117 40 51 73 50 42 38 22 2 49 33 47 161 142 41 47 59 79 37 33 41 3 43 36 49 133 128 43 46 54 229 34 31 33 4 37 39 50 117 113 44 43 48 395 47 30 27 5 35 43 51 109 102 48 43 50 229 533 28 26 6 33 44 52 105 96 67 41 40 114 509 27 24 7 32 76 53 126 92 64 39 35 69 284 25 22 8 41 87 55 183 89 57 37 30 50 172 25 19 9 74 81 67 207 69 107 36 30 41 125 24 19 10 96 88 71 160 22 85 33 29 36 121 25 20 11 83 78 76 130 28 68 32 32 31 80 26 21 12 63 100 75 118 44 58 32 31 28 66 23 24 13 50 276 73 112 55 125 30 30 27 58 22 22 14 46 188 74 109 58 114 30 28 25 32 21 55 15 49 135 78 103 52 103 29 82 28 26 21 160 16 49 110 81 101 49 566 28 77 35 23 23 81 17 53 102 101 99 49 449 28 81 127 21 20 69 18 54 99 97 96 51 234 28 54 171 24 19 54 19 50 98 93 92 57 138 27 40 160 36 18 43 20 52 93 92 88 56 107 26 34 114 49 18 37 21 51 87 88 85 57 90 25 30 152 40 20 31 22 48 80 83 82 63 82 25 27 123 34 20 28 23 43 73 81 75 60 72 24 31 147 53 19 24 24 34 60 75 70 51 66 24 46 139 42 18 22 25 32 43 70 67 46 61 24 85 101 32 20 21 26 32 41 94 70 43 58 26 91 98 29 21 20 27 32 40 83 138 43 60 25 68 130 30 20 22 28 32 40 83 168 41 61 24 50 182 31 20 20 29 31 40 84 223 41 57 24 64 73 35 31 83 30 31 39 121 148 --- 55 31 54 51 49 32 132 31 30 --- 133 118 --- 54 --- 46 --- 44 22 --- TOTAL 1432 2379 2377 3739 1914 3274 958 1529 3234 2738 740 1222 MEAN 46.2 79.3 76.7 121 66.0 106 31.9 49.3 108 88.3 23.9 40.7 MAX 96 276 133 223 142 566 51 91 395 533 38 160 MIN 30 30 47 67 22 40 24 27 25 21 18 19 CFSM 0.78 1.33 1.29 2.02 1.11 1.77 0.54 0.83 1.81 1.48 0.40 0.68 IN. 0.89 1.48 1.48 2.33 1.19 2.04 0.60 0.95 2.02 1.71 0.46 0.76 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1976 TO SEPTEMBER 1977 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 91 46 134 84 68 56 80 30 41 28 40 31 2 62 47 117 79 74 48 70 32 30 34 340 27 3 46 44 105 99 107 42 67 32 24 32 530 24 4 38 43 63 117 102 51 65 31 21 25 352 27 5 32 44 47 120 66 58 115 30 20 21 168 28 6 29 44 84 121 56 100 108 27 19 20 94 28 7 28 43 223 148 42 214 85 25 19 18 59 37 8 57 42 204 90 31 160 69 24 19 21 41 61 9 306 43 148 155 33 106 60 24 20 20 35 57 10 185 46 111 670 93 82 54 24 18 16 30 46 11 97 67 128 432 58 78 51 23 17 14 28 36 12 61 96 1070 230 46 77 49 22 16 13 26 30 13 46 48 743 195 34 217 47 22 16 13 24 26 14 39 67 325 157 34 171 44 21 42 13 28 24 15 35 381 318 153 37 120 42 20 45 12 28 28 16 31 320 325 141 36 89 39 20 99 12 25 105 17 103 189 254 126 34 74 37 23 78 12 24 191 18 101 118 182 122 27 67 34 24 97 12 24 128 19 79 94 143 120 24 64 34 23 61 12 26 74 20 356 66 120 122 24 96 34 22 210 12 27 54 21 332 62 113 119 61 141 33 21 162 12 29 46 22 179 68 110 90 67 559 33 21 81 12 27 39 23 103 72 98 89 52 361 35 21 118 13 25 32 24 70 93 90 85 84 192 36 20 61 12 26 29 25 62 40 93 88 87 122 36 30 40 12 24 26 26 65 56 215 85 76 95 34 29 31 15 29 27 27 56 65 183 82 74 82 32 28 31 15 109 25 28 48 126 142 79 68 75 31 27 28 12 159 26 29 44 236 115 79 --- 116 29 25 25 21 90 24 30 42 197 99 74 --- 114 29 32 24 20 54 23 31 44 --- 88 71 --- 100 --- 42 --- 20 38 --- TOTAL 2867 2903 6190 4422 1595 3927 1512 795 1513 524 2559 1359 MEAN 92.5 96.8 200 143 57.0 127 50.4 25.6 50.4 16.9 82.5 45.3 MAX 356 381 1070 670 107 559 115 42 210 34 530 191 MIN 28 40 47 71 24 42 29 20 16 12 24 23 CFSM 1.55 1.62 3.35 2.39 0.96 2.13 0.85 0.43 0.85 0.28 1.39 0.76 IN. 1.79 1.81 3.86 2.76 1.00 2.45 0.94 0.50 0.94 0.33 1.60 0.85 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1977 TO SEPTEMBER 1978 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 24 47 116 92 102 54 41 62 26 16 27 22 2 25 41 113 72 111 52 39 70 20 15 33 22 3 25 37 84 55 103 81 62 65 20 15 45 27 4 23 38 61 46 96 73 92 72 20 15 71 28 5 22 39 94 41 87 69 57 65 20 15 54 28 6 20 84 113 44 80 67 44 55 20 14 47 25 7 20 76 85 56 75 64 32 54 20 14 47 22 8 20 80 62 76 73 65 29 84 31 14 38 19 9 23 62 50 141 69 137 20 449 77 14 32 18 10 23 49 43 107 68 405 16 302 96 14 33 17 11 24 39 40 77 66 286 18 167 61 17 31 17 12 27 34 37 65 65 173 21 108 44 17 32 16 13 33 30 35 295 71 125 74 80 34 15 32 16 14 31 28 47 306 71 107 122 62 27 14 30 15 15 30 28 63 179 68 95 100 54 24 15 32 15 16 28 29 60 121 68 84 63 49 22 16 27 15 17 26 28 59 119 67 73 38 46 20 16 25 14 18 24 28 56 111 68 65 54 46 19 15 25 14 19 22 28 53 381 70 60 180 46 18 15 25 14 20 22 26 49 609 66 57 112 43 18 15 22 14 21 21 26 54 327 64 55 74 39 17 14 20 14 22 20 26 51 185 62 54 54 39 17 14 19 14 23 20 33 43 137 58 51 45 47 16 15 18 13 24 20 33 38 115 56 50 41 35 21 14 17 13 25 35 35 101 486 56 49 125 35 19 25 17 13 26 329 41 93 717 55 54 223 35 18 21 22 13 27 239 42 74 358 51 53 160 32 17 24 20 12 28 179 41 56 204 49 52 97 28 17 24 18 12 29 133 37 46 154 --- 51 67 29 16 20 17 12 30 92 56 60 127 --- 47 54 30 16 22 17 13 31 63 --- 103 111 --- 43 --- 28 --- 23 17 --- TOTAL 1643 1221 2039 5914 1995 2751 2154 2356 811 517 910 507 MEAN 53.0 40.7 65.8 191 71.2 88.7 71.8 76.0 27.0 16.7 29.4 16.9 MAX 329 84 116 717 111 405 223 449 96 25 71 28 MIN 20 26 35 41 49 43 16 28 16 14 17 12 CFSM 0.89 0.68 1.10 3.20 1.20 1.49 1.20 1.28 0.45 0.28 0.49 0.28 IN. 1.03 0.76 1.27 3.69 1.25 1.72 1.34 1.47 0.51 0.32 0.57 0.32 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1978 TO SEPTEMBER 1979 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 13 10 91 26 36 142 42 61 210 33 93 32 2 12 9.8 58 105 33 119 38 50 143 29 142 27 3 12 9.6 40 114 32 105 38 43 84 26 91 25 4 11 9.6 33 83 32 93 37 40 59 25 54 212 5 12 9.4 39 56 32 122 31 37 54 24 37 1110 6 12 10 41 43 49 104 36 36 47 23 30 681 7 11 11 39 44 215 92 43 34 49 28 26 298 8 11 13 34 58 151 83 38 34 67 36 24 173 9 11 11 36 56 109 74 146 58 89 36 23 116 10 11 11 35 52 76 67 138 90 60 41 22 77 11 11 11 30 51 59 130 107 83 43 37 22 56 12 11 11 28 109 51 112 72 77 35 33 26 44 13 11 10 25 210 46 99 98 101 31 31 24 40 14 11 11 24 151 42 84 114 422 28 28 23 38 15 11 12 25 92 39 74 88 274 26 27 23 36 16 11 13 23 61 38 64 62 150 170 26 22 34 17 11 12 25 49 37 57 47 85 248 25 20 32 18 11 12 25 44 55 52 39 58 179 92 20 32 19 11 12 24 40 69 49 35 48 100 230 19 30 20 11 11 24 41 109 47 32 40 242 84 19 29 21 11 11 24 98 221 46 31 80 99 185 20 32 22 10 11 23 80 270 45 30 284 61 660 31 34 23 10 11 23 61 581 76 29 191 47 290 30 33 24 10 11 52 108 1710 114 28 129 40 171 22 32 25 10 11 72 85 1350 89 51 87 41 107 21 45 26 10 11 62 66 485 81 545 61 33 135 20 55 27 10 17 47 51 264 67 467 48 30 119 20 56 28 10 15 37 45 182 57 236 41 28 78 23 57 29 10 39 32 40 --- 51 128 50 26 51 33 71 30 10 119 29 38 --- 47 82 61 29 39 80 94 31 10 --- 27 37 --- 44 --- 93 --- 32 46 --- TOTAL 337 475.4 1127 2194 6373 2486 2908 2946 2398 2781 1106 3631 MEAN 10.9 15.8 36.4 70.8 228 80.2 96.9 95.0 79.9 89.7 35.7 121 MAX 13 119 91 210 1710 142 545 422 248 660 142 1110 MIN 10 9.4 23 26 32 44 28 34 26 23 19 25 CFSM 0.18 0.27 0.61 1.19 3.82 1.35 1.63 1.59 1.34 1.51 0.60 2.03 IN. 0.21 0.30 0.70 1.37 3.98 1.55 1.82 1.84 1.50 1.74 0.69 2.27 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1979 TO SEPTEMBER 1980 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 101 56 50 89 137 40 264 30 23 21 13 14 2 102 219 47 80 123 46 174 24 22 18 14 13 3 113 335 43 66 111 54 161 21 20 18 13 13 4 89 171 42 61 102 56 144 19 20 19 12 13 5 107 107 42 59 92 75 125 19 19 21 13 13 6 77 76 53 71 97 76 114 19 19 19 13 13 7 64 61 65 82 91 70 114 19 19 18 13 12 8 51 53 65 139 87 157 139 22 19 17 12 12 9 42 48 59 244 110 144 163 28 18 17 12 12 10 37 46 51 186 227 137 135 28 18 20 12 12 11 33 233 46 201 165 112 116 28 17 23 12 12 12 30 276 43 160 141 226 102 28 17 19 14 12 13 29 199 43 137 116 492 268 27 17 17 13 11 14 28 135 43 154 102 355 350 26 17 15 13 11 15 26 96 41 131 93 199 276 26 17 15 12 11 16 25 76 49 125 106 140 183 25 17 14 28 11 17 24 65 48 131 91 157 135 26 18 14 19 10 18 24 59 46 244 83 380 114 28 20 14 14 10 19 24 55 43 198 77 286 103 33 19 14 22 10 20 24 52 42 171 71 220 98 227 18 13 102 10 21 24 50 40 146 58 249 91 244 17 13 59 10 22 24 48 39 146 63 217 84 126 17 12 126 10 23 25 50 39 217 71 150 78 72 17 13 101 10 24 24 50 45 173 73 190 71 54 48 12 55 9.8 25 22 51 62 157 66 187 65 46 181 13 35 10 26 21 92 61 152 52 158 50 41 242 13 26 10 27 22 79 56 170 41 129 40 34 90 13 20 9.8 28 22 75 50 142 36 390 34 30 49 12 17 129 29 23 65 44 131 34 713 34 28 34 13 16 636 30 29 56 57 121 --- 631 33 26 26 13 14 568 31 36 --- 62 173 --- 477 --- 24 --- 13 14 --- TOTAL 1322 3034 1516 4457 2716 6913 3858 1428 1095 486 859 1637.6 MEAN 42.6 101 48.9 144 93.7 223 129 46.1 36.5 15.7 27.7 54.6 MAX 113 335 65 244 227 713 350 244 242 23 126 636 MIN 21 46 39 59 34 40 33 19 17 12 12 9.8 CFSM 0.72 1.70 0.82 2.41 1.57 3.74 2.16 0.77 0.61 0.26 0.46 0.92 IN. 0.83 1.89 0.95 2.78 1.70 4.31 2.41 0.89 0.68 0.30 0.54 1.02 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1980 TO SEPTEMBER 1981 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 456 38 45 43 21 33 64 17 23 37 103 17 2 294 34 42 42 44 34 56 16 27 40 359 16 3 174 29 40 41 61 31 43 16 26 456 355 15 4 108 39 37 41 56 31 34 16 84 1040 184 14 5 75 50 36 39 48 42 30 16 89 372 72 14 6 58 58 38 40 43 40 30 16 56 222 38 14 7 49 52 42 50 44 37 28 21 42 106 25 15 8 43 47 44 41 45 33 26 22 34 64 20 25 9 48 43 50 28 43 30 24 18 29 43 19 37 10 66 41 70 22 65 29 23 18 26 35 37 26 11 67 40 55 19 590 27 22 17 25 30 62 21 12 62 39 46 22 324 25 21 17 46 34 299 18 13 56 39 44 35 227 24 20 17 35 26 240 16 14 50 38 42 42 134 24 20 16 32 23 114 16 15 43 46 41 52 95 23 22 16 28 20 54 15 16 38 57 40 62 80 22 19 16 26 32 44 16 17 32 56 38 54 70 22 19 16 24 62 75 15 18 29 63 36 48 82 29 19 16 24 29 76 15 19 28 59 44 44 96 40 20 17 24 22 77 14 20 30 54 51 46 75 45 24 18 27 19 84 14 21 27 52 51 69 59 40 26 18 27 17 94 14 22 26 44 56 64 49 46 21 18 24 15 59 14 23 28 40 84 59 44 81 20 17 30 14 42 14 24 34 57 68 50 40 73 22 17 30 13 35 14 25 38 58 62 45 37 56 20 16 28 14 30 14 26 36 43 59 42 36 48 19 16 25 19 26 14 27 33 62 62 41 33 46 18 21 24 21 23 14 28 29 69 67 46 32 41 18 19 22 17 20 14 29 27 60 48 31 --- 36 18 18 21 14 19 14 30 40 52 44 25 --- 38 17 17 20 13 20 14 31 42 --- 45 22 --- 41 --- 21 --- 30 18 --- TOTAL 2166 1459 1527 1305 2573 1167 763 540 978 2899 2723 493 MEAN 69.9 48.6 49.3 42.1 91.9 37.6 25.4 17.4 32.6 93.5 87.8 16.4 MAX 456 69 84 69 590 81 64 22 89 1040 359 37 MIN 26 29 36 19 21 22 17 16 20 13 18 14 CFSM 1.17 0.82 0.83 0.71 1.54 0.63 0.43 0.29 0.55 1.57 1.47 0.28 IN. 1.35 0.91 0.95 0.81 1.61 0.73 0.48 0.34 0.61 1.81 1.70 0.31 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1981 TO SEPTEMBER 1982 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 14 27 84 727 62 141 73 136 25 35 93 23 2 14 25 94 332 56 109 69 110 42 29 111 23 3 13 23 70 365 183 89 65 100 675 26 110 23 4 13 22 52 504 148 71 46 100 537 23 92 23 5 13 21 40 436 138 77 16 94 453 27 103 22 6 13 20 33 225 109 77 42 91 189 23 111 22 7 13 19 30 154 88 138 61 86 89 23 130 20 8 12 19 29 127 83 159 79 80 55 23 115 20 9 12 19 27 101 127 118 73 72 40 31 99 20 10 14 20 26 84 133 88 68 61 56 40 100 20 11 13 20 25 71 122 74 72 43 69 49 134 35 12 12 22 24 64 115 67 79 42 55 38 153 26 13 12 22 24 73 127 65 76 45 80 31 129 23 14 12 23 73 124 104 62 73 43 62 65 104 23 15 12 22 351 140 91 75 67 38 56 93 86 24 16 12 23 302 118 208 125 62 26 113 65 56 24 17 12 25 152 101 321 134 65 12 123 49 28 23 18 12 26 109 87 208 102 65 11 64 80 29 24 19 12 27 75 83 134 85 65 11 37 180 29 23 20 12 26 57 101 105 77 81 12 30 79 29 30 21 12 25 48 120 87 68 79 12 28 56 28 30 22 12 24 45 109 76 69 77 11 153 43 27 27 23 12 23 45 143 66 71 75 12 173 43 26 25 24 13 33 53 154 61 68 69 18 106 77 25 23 25 26 38 426 124 59 63 73 18 72 56 25 22 26 38 41 332 106 68 61 118 18 54 68 28 23 27 48 42 199 92 183 59 400 18 44 57 27 23 28 48 65 143 77 189 59 612 34 44 63 25 22 29 38 49 170 69 --- 64 321 30 46 111 24 22 30 32 53 116 66 --- 67 183 20 40 116 23 21 31 31 --- 519 63 --- 81 --- 16 --- 91 23 --- TOTAL 562 844 3773 5140 3451 2663 3304 1420 3610 1790 2122 709 MEAN 18.1 28.1 122 166 123 85.9 110 45.8 120 57.7 68.5 23.6 MAX 48 65 519 727 321 159 612 136 675 180 153 35 MIN 12 19 24 63 56 59 16 11 25 23 23 20 CFSM 0.30 0.47 2.04 2.78 2.07 1.44 1.85 0.77 2.02 0.97 1.15 0.40 IN. 0.35 0.53 2.35 3.21 2.15 1.66 2.06 0.89 2.25 1.12 1.32 0.44 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 23 24 72 91 72 170 152 35 23 17 1.6 6.5 2 24 24 59 133 155 145 153 36 22 23 1.8 8.0 3 22 25 50 172 127 121 151 47 22 31 2.1 7.4 4 20 84 42 146 111 104 153 55 20 58 2.0 7.2 5 20 99 40 105 89 93 167 56 19 455 2.0 7.2 6 19 103 44 80 90 395 151 60 33 258 2.1 6.9 7 19 87 39 66 85 431 182 53 51 98 2.0 26 8 22 64 36 57 81 337 381 53 48 54 5.5 9.4 9 21 44 32 55 73 217 728 54 41 33 2.7 14 10 21 37 30 61 75 135 721 49 46 24 3.0 12 11 20 39 46 61 87 104 417 46 36 21 3.2 18 12 20 47 199 56 99 92 291 44 30 22 3.4 21 13 35 48 169 49 99 82 223 43 28 21 3.5 24 14 48 44 116 45 265 68 217 44 27 23 3.5 59 15 52 60 83 42 230 63 183 42 25 23 3.7 33 16 53 52 102 44 201 57 164 43 24 16 4.0 34 17 48 46 87 44 148 390 147 42 23 15 3.9 30 18 40 44 75 57 117 991 127 39 22 21 4.1 25 19 34 52 67 76 121 497 79 38 21 16 4.3 22 20 32 54 60 102 101 280 86 39 20 14 6.2 21 21 31 52 53 125 77 245 88 38 19 13 4.7 21 22 31 44 47 150 114 203 77 36 18 7.3 4.8 20 23 29 41 43 125 227 162 52 35 17 3.3 4.8 18 24 28 36 43 100 176 140 118 32 16 3.5 4.7 17 25 31 32 42 75 126 144 126 30 14 6.2 4.8 16 26 31 29 39 68 99 143 54 28 14 4.7 4.7 15 27 61 30 38 70 92 160 92 28 14 2.8 5.6 15 28 64 31 37 85 97 163 132 27 13 2.3 5.9 14 29 57 33 87 100 --- 154 90 25 13 2.1 5.6 13 30 39 51 103 80 --- 158 68 24 14 2.0 5.2 12 31 26 --- 106 78 --- 158 --- 24 --- 1.8 5.1 --- TOTAL 1021 1456 2086 2598 3434 6602 5770 1245 733 1292.0 120.5 552.6 MEAN 32.9 48.5 67.3 83.8 123 213 192 40.2 24.4 41.7 3.89 18.4 MAX 64 103 199 172 265 991 728 60 51 455 6.2 59 MIN 19 24 30 42 72 57 52 24 13 1.8 1.6 6.5 CFSM 0.55 0.81 1.13 1.41 2.06 3.57 3.23 0.67 0.41 0.70 0.07 0.31 IN. 0.64 0.91 1.30 1.62 2.14 4.12 3.60 0.78 0.46 0.81 0.08 0.34 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1983 TO SEPTEMBER 1984 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 15 41 56 64 77 175 110 58 63 52 96 25 2 14 21 48 58 70 131 104 53 48 60 354 23 3 14 15 177 55 57 105 110 107 41 62 419 18 4 14 16 310 52 38 91 175 203 36 57 201 16 5 15 16 240 50 52 95 306 165 32 47 120 18 6 15 17 462 48 56 140 216 170 31 72 82 18 7 15 17 475 46 66 163 146 364 29 55 72 17 8 13 18 241 45 73 143 109 284 27 36 67 17 9 13 20 135 47 60 117 93 173 25 28 64 16 10 8.5 21 85 132 54 97 92 109 24 24 37 15 11 8.5 21 132 212 51 83 86 81 22 22 14 15 12 9.9 22 506 139 52 46 83 66 21 21 48 15 13 12 23 312 100 127 31 88 49 21 50 61 14 14 15 23 187 87 493 25 96 58 20 96 53 13 15 16 59 134 77 460 54 96 101 19 47 48 13 16 16 75 75 119 264 68 80 96 19 40 53 12 17 16 68 51 99 186 62 71 84 18 60 57 9.5 18 15 55 59 132 139 58 69 45 17 175 41 8.7 19 14 45 62 238 111 54 65 26 17 159 54 7.7 20 13 68 61 200 95 80 97 17 43 107 232 7.5 21 13 93 61 150 85 224 99 16 112 84 126 7.3 22 13 81 78 118 80 159 102 16 48 57 64 7.1 23 96 64 86 123 128 107 175 61 23 38 51 6.7 24 162 75 79 111 130 81 149 159 20 32 51 6.9 25 91 142 69 106 114 234 116 100 20 100 39 7.4 26 52 113 62 99 96 230 90 70 20 574 37 7.5 27 33 84 55 120 196 152 78 56 28 195 35 7.7 28 29 82 63 124 287 299 80 84 62 156 33 7.6 29 26 78 79 113 238 503 72 141 76 246 31 8.7 30 26 67 81 101 --- 245 64 132 52 177 28 10 31 62 --- 72 88 --- 147 --- 82 --- 116 27 --- TOTAL 874.9 1540 4593 3253 3935 4199 3317 3226 1034 3045 2695 375.3 MEAN 28.2 51.3 148 105 136 135 111 104 34.5 98.2 86.9 12.5 MAX 162 142 506 238 493 503 306 364 112 574 419 25 MIN 8.5 15 48 45 38 25 64 16 17 21 14 6.7 CFSM 0.47 0.86 2.49 1.76 2.28 2.27 1.86 1.75 0.58 1.65 1.46 0.21 IN. 0.55 0.96 2.87 2.03 2.46 2.62 2.07 2.01 0.65 1.90 1.68 0.23 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1984 TO SEPTEMBER 1985 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 19 32 47 29 123 59 24 13 13 77 60 60 2 21 27 38 29 618 55 23 30 13 113 53 70 3 21 24 52 86 327 48 23 110 14 53 38 57 4 19 30 45 112 161 27 23 45 14 31 26 43 5 17 27 154 99 381 12 22 12 13 28 21 20 6 16 26 151 81 697 19 64 13 14 37 18 16 7 16 23 101 68 371 25 52 12 250 48 16 14 8 16 21 70 63 220 22 45 12 70 31 18 13 9 15 21 54 53 204 9.5 35 13 15 22 21 13 10 15 21 46 45 135 9.2 20 150 13 16 24 14 11 14 36 44 42 108 9.2 20 80 13 13 23 15 12 13 33 43 38 112 35 21 45 11 11 22 15 13 13 30 39 34 123 53 22 14 9.4 9.6 18 14 14 13 27 37 32 114 40 24 14 7.7 10 16 12 15 13 25 35 31 87 8.6 25 13 9.5 9.4 14 11 16 13 25 35 31 58 8.2 20 14 68 8.4 13 11 17 13 25 34 84 41 8.6 17 15 38 7.9 15 11 18 16 25 33 78 49 8.1 17 12 29 6.6 25 9.9 19 18 26 32 66 52 8.0 17 12 20 6.1 30 9.9 20 18 27 32 58 138 8.4 17 12 14 6.2 24 9.7 21 18 26 32 46 160 10 15 12 12 6.2 21 9.4 22 18 35 32 38 129 14 17 70 10 6.5 35 9.8 23 20 39 32 35 103 11 25 45 8.7 44 50 9.6 24 20 35 30 33 86 15 37 11 7.7 140 47 11 25 19 30 30 32 76 26 25 11 7.2 298 45 11 26 18 27 29 31 68 28 16 11 8.6 218 42 9.8 27 18 28 28 30 74 26 17 11 7.0 145 39 8.7 28 19 60 28 34 64 26 18 25 6.1 365 34 7.9 29 22 66 29 37 --- 26 17 13 6.5 328 30 7.3 30 23 56 29 35 --- 25 15 28 43 155 42 7.2 31 35 --- 29 99 --- 25 --- 13 --- 91 45 --- TOTAL 549 933 1450 1609 4879 704.8 733 891 765.4 2340.9 925 530.2 MEAN 17.7 31.1 46.8 51.9 174 22.7 24.4 28.7 25.5 75.5 29.8 17.7 MAX 35 66 154 112 697 59 64 150 250 365 60 70 MIN 13 21 28 29 41 8.0 15 11 6.1 6.1 13 7.2 CFSM 0.30 0.52 0.78 0.87 2.92 0.38 0.41 0.48 0.43 1.27 0.50 0.30 IN. 0.34 0.58 0.91 1.00 3.05 0.44 0.46 0.56 0.48 1.46 0.58 0.33 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1985 TO SEPTEMBER 1986 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 5.0 159 181 34 32 20 6.7 9.6 4.9 13 22 74 2 6.8 153 158 34 30 20 6.4 9.0 4.8 9.9 22 65 3 21 95 117 33 29 18 6.3 8.3 21 8.5 16 70 4 439 76 87 33 29 18 6.5 6.6 7.3 5.9 12 58 5 269 57 71 35 33 18 9.4 6.2 5.9 4.9 9.7 48 6 118 43 63 38 48 17 14 6.1 5.2 4.5 11 29 7 73 33 59 39 44 17 18 6.0 4.6 4.4 22 48 8 89 28 53 42 38 16 21 6.7 4.2 4.2 13 73 9 80 24 49 43 33 15 22 7.3 4.9 4.0 23 73 10 46 24 46 41 52 23 18 5.9 4.6 3.9 192 64 11 14 22 44 37 109 25 17 5.4 5.0 4.0 104 58 12 9.0 26 47 34 82 139 17 5.1 4.6 3.9 1630 50 13 8.0 49 69 33 65 155 17 7.5 4.2 3.9 671 39 14 6.9 38 65 31 52 206 16 6.5 3.9 12 330 28 15 5.9 35 59 36 49 234 15 5.1 5.2 5.5 189 26 16 5.4 36 52 60 36 214 16 4.9 4.6 5.4 102 33 17 5.1 35 56 69 31 153 15 4.9 4.5 7.4 62 18 18 4.8 30 63 69 29 79 14 4.7 4.2 5.8 317 13 19 4.2 28 61 84 27 118 13 4.7 3.8 5.1 369 10 20 4.1 143 64 72 27 166 12 4.8 3.8 4.2 1730 10 21 13 231 25 63 26 197 12 4.6 3.8 6.2 815 10 22 263 570 16 54 25 158 12 4.2 3.8 195 402 9.9 23 61 471 15 40 24 109 11 3.8 3.8 70 305 9.9 24 54 226 14 39 22 81 11 3.7 3.8 33 215 9.8 25 39 135 14 41 21 65 11 3.6 3.8 48 130 9.8 26 29 129 15 70 20 32 10 3.6 32 128 52 9.8 27 23 104 23 65 20 11 10 6.0 85 169 16 9.8 28 20 87 30 56 20 8.9 10 6.1 81 406 25 9.8 29 19 110 35 47 --- 7.7 11 13 39 134 63 9.8 30 17 179 34 42 --- 7.6 10 8.1 22 57 114 9.8 31 55 --- 33 36 --- 7.4 --- 6.0 --- 31 96 --- TOTAL 1807.2 3376 1718 1450 1053 2355.6 388.3 188.0 389.2 1397.6 8079.7 985.4 MEAN 58.3 113 55.4 46.8 37.6 76.0 12.9 6.06 13.0 45.1 261 32.8 MAX 439 570 181 84 109 234 22 13 85 406 1730 74 MIN 4.1 22 14 31 20 7.4 6.3 3.6 3.8 3.9 9.7 9.8 CFSM 0.98 1.89 0.93 0.78 0.63 1.27 0.22 0.10 0.22 0.76 4.37 0.55 IN. 1.13 2.11 1.07 0.91 0.66 1.47 0.24 0.12 0.24 0.87 5.04 0.62 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1986 TO SEPTEMBER 1987 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 9.8 58 163 167 113 899 264 40 18 54 70 86 2 10 42 178 180 112 543 219 41 62 55 53 63 3 11 37 160 142 108 307 193 36 100 99 41 55 4 12 32 133 112 100 225 169 76 250 343 31 51 5 12 30 113 91 93 178 142 88 110 282 24 205 6 12 29 91 78 88 143 115 52 65 215 27 191 7 11 28 88 74 99 116 100 47 54 139 178 305 8 69 27 86 72 91 137 95 43 50 93 125 359 9 258 27 85 69 82 140 90 35 47 74 154 254 10 185 26 84 70 77 138 84 31 45 64 94 641 11 277 23 89 67 75 125 80 28 46 58 102 307 12 183 531 109 62 79 113 77 37 48 53 48 233 13 118 335 106 57 74 99 91 53 70 50 39 282 14 120 252 99 53 70 88 116 69 48 41 42 240 15 87 347 92 54 68 82 48 56 80 32 43 161 16 68 267 87 60 215 87 21 47 75 22 41 113 17 64 185 84 89 192 106 21 40 47 18 37 95 18 58 135 80 215 165 80 42 34 60 16 31 80 19 49 109 77 777 128 90 68 35 130 15 27 46 20 40 276 74 621 98 71 65 50 70 14 24 65 21 35 232 69 324 81 77 62 35 45 14 22 63 22 32 189 56 806 93 63 60 29 40 14 20 56 23 29 148 47 639 101 60 56 28 37 13 18 50 24 28 120 57 328 88 61 68 27 33 12 16 40 25 37 203 53 280 84 167 62 26 197 12 14 34 26 44 152 54 296 85 196 57 25 323 11 13 28 27 36 81 54 230 222 281 51 23 412 11 13 26 28 32 94 51 179 476 578 49 21 185 92 12 26 29 29 124 50 149 --- 330 45 20 102 115 12 24 30 27 122 50 131 --- 370 42 18 69 139 19 47 31 27 --- 50 121 --- 353 --- 17 --- 99 92 --- TOTAL 2009.8 4261 2669 6593 3357 6303 2652 1207 2918 2269 1482 4226 MEAN 64.8 142 86.1 213 120 203 88.4 38.9 97.3 73.2 47.8 141 MAX 277 531 178 806 476 899 264 88 412 343 178 641 MIN 9.8 23 47 53 68 60 21 17 18 11 12 24 CFSM 1.09 2.38 1.44 3.57 2.01 3.41 1.48 0.65 1.63 1.23 0.80 2.36 IN. 1.25 2.66 1.67 4.12 2.10 3.93 1.66 0.75 1.82 1.42 0.93 2.64 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1987 TO SEPTEMBER 1988 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 37 22 108 54 81 38 33 23 12 8.0 32 119 2 33 25 84 109 82 34 38 20 12 8.4 19 76 3 30 27 81 163 156 34 33 19 12 9.0 16 88 4 25 31 79 162 168 37 31 26 11 9.6 13 130 5 24 32 70 122 133 40 30 68 11 14 12 266 6 23 29 66 98 111 38 28 50 11 14 23 170 7 24 25 64 96 97 35 30 38 11 11 26 96 8 23 26 64 96 90 33 26 28 11 9.6 14 80 9 21 29 64 85 87 36 23 23 28 8.8 12 326 10 21 91 78 92 84 70 22 22 107 8.0 11 328 11 21 33 69 96 82 82 26 26 60 9.5 9.3 172 12 23 30 61 91 91 66 119 22 38 9.9 8.6 105 13 22 29 56 95 84 76 225 19 23 18 7.4 71 14 20 28 52 94 78 55 186 18 16 12 6.9 54 15 20 30 89 87 75 43 218 17 13 9.5 5.9 44 16 20 32 81 83 72 39 99 16 12 8.9 5.6 37 17 21 230 68 95 71 35 65 17 11 8.1 5.4 43 18 21 150 60 134 67 43 61 21 11 6.5 5.2 73 19 20 110 56 142 100 83 84 18 11 5.6 4.9 63 20 21 85 53 185 90 72 69 17 16 5.9 4.7 57 21 22 71 58 166 84 59 54 15 26 8.6 4.6 50 22 21 64 97 142 75 47 50 14 14 43 4.5 43 23 21 58 81 119 68 41 43 16 11 22 4.8 37 24 21 54 74 104 64 40 53 29 11 15 5.1 30 25 22 49 71 107 58 40 45 43 11 11 4.4 44 26 28 79 67 102 57 49 42 38 11 8.8 4.1 125 27 210 347 65 93 55 54 36 22 11 79 4.0 81 28 40 267 70 88 51 47 35 16 11 207 230 57 29 35 182 67 85 43 43 29 13 9.5 177 816 43 30 23 149 59 83 --- 39 25 12 8.2 147 251 35 31 21 --- 56 82 --- 35 --- 12 --- 68 176 --- TOTAL 934 2414 2168 3350 2454 1483 1858 738 560.7 980.7 1746.4 2943 MEAN 30.1 80.5 69.9 108 84.6 47.8 61.9 23.8 18.7 31.6 56.3 98.1 MAX 210 347 108 185 168 83 225 68 107 207 816 328 MIN 20 22 52 54 43 33 22 12 8.2 5.6 4.0 30 CFSM 0.51 1.35 1.17 1.81 1.42 0.80 1.04 0.40 0.31 0.53 0.95 1.65 IN. 0.58 1.51 1.35 2.09 1.53 0.93 1.16 0.46 0.35 0.61 1.09 1.84 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1988 TO SEPTEMBER 1989 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 31 220 34 66 33 98 53 168 4.8 159 52 14 2 27 159 32 89 33 90 48 360 5.5 94 95 16 3 38 95 30 140 32 130 44 172 5.8 88 66 26 4 62 64 31 116 32 125 38 94 7.2 352 21 35 5 54 111 30 105 33 124 35 87 19 527 16 48 6 46 84 31 98 36 78 35 99 18 267 15 74 7 39 61 31 76 44 64 39 66 14 152 18 73 8 33 49 32 55 44 47 65 51 14 98 35 64 9 29 42 34 58 39 42 123 54 200 70 42 73 10 27 38 34 69 35 38 152 83 118 64 47 66 11 25 37 34 64 32 35 157 63 78 51 46 28 12 24 34 33 58 30 39 108 54 93 37 46 24 13 22 32 32 79 29 45 80 45 104 32 44 14 14 20 33 32 74 31 44 64 38 66 34 37 13 15 20 33 32 69 36 43 183 60 17 199 19 11 16 19 33 35 60 43 48 211 50 21 348 44 35 17 22 68 34 51 47 44 150 71 24 286 62 21 18 32 59 33 46 50 43 102 59 16 158 90 38 19 51 53 33 42 48 43 77 38 40 109 106 33 20 80 46 32 40 66 40 65 34 94 149 91 25 21 88 42 33 39 232 42 54 32 181 198 91 306 22 59 37 33 36 253 65 48 26 218 181 78 743 23 51 86 33 57 203 283 44 13 166 151 68 580 24 40 85 34 94 188 548 49 9.3 101 142 45 369 25 17 68 35 47 130 251 44 7.5 163 122 30 109 26 12 54 34 20 99 149 42 6.7 102 102 35 117 27 11 46 33 22 90 109 37 6.2 72 98 44 110 28 9.4 43 34 18 109 86 33 5.7 52 87 63 95 29 8.6 37 34 23 --- 73 30 5.0 77 77 80 86 30 7.3 35 33 35 --- 69 31 5.0 210 113 62 89 31 52 --- 43 35 --- 60 --- 4.9 --- 75 26 --- TOTAL 1056.3 1884 1028 1881 2077 2995 2241 1867.3 2301.3 4620 1614 3335 MEAN 34.1 62.8 33.2 60.7 74.2 96.6 74.7 60.2 76.7 149 52.1 111 MAX 88 220 43 140 253 548 211 360 218 527 106 743 MIN 7.3 32 30 18 29 35 30 4.9 4.8 32 15 11 CFSM 0.57 1.05 0.56 1.02 1.24 1.62 1.25 1.01 1.29 2.50 0.87 1.87 IN. 0.66 1.18 0.64 1.17 1.30 1.87 1.40 1.17 1.44 2.88 1.01 2.08 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1989 TO SEPTEMBER 1990 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 153 21 19 85 89 24 101 20 40 14 9.3 18 2 338 52 39 128 71 21 98 20 31 12 9.0 16 3 349 27 45 116 24 58 91 19 28 10 8.8 15 4 280 19 48 72 31 69 68 205 26 9.3 8.6 13 5 145 19 61 43 62 92 41 240 23 8.7 8.4 12 6 49 59 67 209 122 127 38 110 22 7.8 12 11 7 50 85 41 198 87 105 35 40 20 7.1 9.9 11 8 50 99 395 254 23 39 24 24 20 6.5 34 10 9 51 77 511 186 23 18 22 25 21 5.9 26 9.5 10 50 32 356 167 24 18 22 105 25 5.4 18 9.4 11 49 20 227 128 22 18 23 40 22 9.1 15 10 12 45 19 224 174 48 18 22 22 20 9.4 13 10 13 45 55 276 167 112 18 20 20 19 13 12 10 14 45 55 206 160 109 21 20 20 18 41 11 89 15 46 55 152 112 121 21 22 22 17 24 35 100 16 46 69 117 87 266 21 21 26 16 20 57 53 17 39 62 95 78 266 31 20 27 16 24 53 34 18 20 73 84 46 192 32 18 29 15 23 40 23 19 19 64 106 118 184 30 18 29 14 32 33 17 20 18 69 98 114 140 27 19 26 14 49 27 17 21 18 88 92 115 109 27 18 27 13 35 23 16 22 33 41 87 75 99 27 19 26 13 31 32 22 23 53 75 78 56 116 27 18 24 13 26 31 19 24 54 42 71 23 110 27 18 22 12 21 61 17 25 44 50 71 51 93 26 18 21 11 18 44 15 26 28 86 82 80 75 27 17 21 11 15 50 14 27 28 92 97 146 40 32 17 20 11 13 41 14 28 28 76 54 131 25 41 140 55 10 12 29 13 29 29 22 26 109 --- 64 66 75 9.8 11 24 12 30 28 19 51 157 --- 70 24 77 9.4 10 21 12 31 42 --- 67 112 --- 109 --- 55 --- 9.7 19 --- TOTAL 2272 1622 3943 3697 2683 1285 1098 1492 540.2 532.9 815.0 641.9 MEAN 73.3 54.1 127 119 95.8 41.5 36.6 48.1 18.0 17.2 26.3 21.4 MAX 349 99 511 254 266 127 140 240 40 49 61 100 MIN 18 19 19 23 22 18 17 19 9.4 5.4 8.4 9.4 CFSM 1.23 0.91 2.13 2.00 1.61 0.70 0.61 0.81 0.30 0.29 0.44 0.36 IN. 1.42 1.01 2.46 2.31 1.67 0.80 0.69 0.93 0.34 0.33 0.51 0.40 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1990 TO SEPTEMBER 1991 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 12 84 59 41 179 76 231 106 124 41 355 149 2 12 47 50 39 134 208 148 81 543 41 581 98 3 12 33 53 55 119 546 106 64 330 40 451 75 4 28 30 60 74 108 615 88 56 161 44 259 65 5 31 31 52 68 81 328 82 323 105 49 165 60 6 22 53 47 64 68 197 82 924 74 68 220 56 7 19 62 43 53 90 177 77 401 59 69 158 54 8 16 63 57 70 85 143 107 198 51 59 116 51 9 14 80 52 69 80 121 144 125 46 48 108 47 10 200 79 48 66 87 92 146 104 43 41 128 44 11 1190 34 43 93 69 80 119 88 41 36 119 42 12 925 25 39 85 53 80 90 115 38 33 237 39 13 668 39 37 80 46 208 86 214 36 30 277 38 14 281 45 38 84 50 164 198 201 35 27 200 37 15 68 43 37 76 47 133 176 124 37 33 172 37 16 56 41 36 113 44 110 134 247 36 39 127 39 17 66 42 35 92 44 82 98 477 39 57 98 49 18 86 41 34 64 44 73 80 240 572 91 82 55 19 83 39 36 72 44 71 76 164 332 251 71 55 20 66 40 45 139 43 70 71 129 290 155 64 56 21 56 34 60 110 43 64 71 125 229 103 58 46 22 191 31 57 103 67 62 58 109 154 71 53 42 23 1600 30 51 92 308 60 39 97 104 54 50 41 24 668 30 48 155 205 57 44 93 105 43 62 60 25 327 29 40 185 153 53 47 84 73 42 290 144 26 224 29 35 139 119 50 45 85 58 37 426 114 27 141 29 34 112 101 45 206 167 51 71 252 85 28 106 51 35 87 91 39 374 122 46 349 173 73 29 95 92 35 80 --- 370 203 134 45 563 384 65 30 101 76 34 265 --- 939 161 148 43 1300 350 58 31 94 --- 41 267 --- 431 --- 96 --- 516 197 --- TOTAL 7458 1382 1371 3092 2602 5744 3587 5641 3900 4401 6283 1874 MEAN 241 46.1 44.2 99.7 92.9 185 120 182 130 142 203 62.5 MAX 1600 92 60 267 308 939 374 924 572 1300 581 149 MIN 12 25 34 39 43 39 39 56 35 27 50 37 CFSM 4.04 0.77 0.74 1.67 1.56 3.11 2.01 3.05 2.18 2.38 3.40 1.05 IN. 4.65 0.86 0.86 1.93 1.62 3.59 2.24 3.52 2.43 2.75 3.92 1.17 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1991, BY WATER YEAR (WY) MEAN 51.9 61.4 79.1 112 109 117 84.2 60.2 59.0 69.7 69.9 50.8 MAX 241 142 200 213 228 244 192 182 159 174 261 141 (WY) 1991 1987 1977 1987 1979 1971 1983 1991 1973 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1990 CALENDAR YEAR FOR 1991 WATER YEAR WATER YEARS 1967 - 1991 ANNUAL TOTAL 47335 ANNUAL MEAN 130 76.9 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 1600 Oct 23 1730 Aug 20 1986 LOWEST DAILY MEAN 12 Oct 1 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 19 Oct 1 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1990 Oct 23 2410 Aug 12 1986 MAXIMUM PEAK STAGE 8.65 Oct 23 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 2.18 1.29 ANNUAL RUNOFF (INCHES) 29.54 17.52 10 PERCENT EXCEEDS 271 154 50 PERCENT EXCEEDS 73 50 90 PERCENT EXCEEDS 36 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1991 TO SEPTEMBER 1992 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 50 33 33 69 74 136 65 33 21 94 18 26 2 59 34 36 74 56 126 59 31 22 66 17 24 3 83 37 72 139 49 111 54 29 23 54 17 43 4 70 39 95 98 53 86 55 29 41 44 17 41 5 70 38 66 88 77 52 52 27 46 36 20 79 6 64 36 56 79 85 88 41 29 37 31 18 136 7 55 34 52 73 76 87 38 53 31 28 19 110 8 48 34 46 174 69 65 38 131 86 26 18 82 9 44 66 41 181 65 62 41 104 296 23 18 76 10 41 153 40 100 62 85 42 71 138 22 18 47 11 40 94 37 74 60 78 43 53 87 21 18 35 12 40 76 36 63 51 53 50 43 102 19 18 30 13 39 64 36 63 45 49 44 38 69 18 96 26 14 36 56 38 89 43 46 37 35 152 17 415 22 15 47 50 38 78 51 32 34 32 105 16 266 21 16 63 44 37 76 54 26 33 30 70 15 132 20 17 61 40 35 76 35 108 30 29 56 14 179 19 18 54 36 34 77 17 77 31 27 45 17 390 19 19 49 34 33 131 15 46 30 26 40 21 226 39 20 45 34 32 119 14 35 37 24 36 52 172 50 21 42 35 32 109 48 26 181 23 33 54 80 151 22 40 37 33 101 90 21 266 21 29 47 54 65 23 39 38 35 156 264 29 144 20 26 174 44 39 24 39 36 48 144 148 33 79 19 25 128 38 50 25 38 33 47 121 233 74 57 19 23 62 33 51 26 37 32 45 95 333 327 46 19 22 41 30 47 27 37 31 49 79 230 210 40 19 28 31 65 40 28 36 31 140 81 262 143 38 19 110 27 90 37 29 35 31 339 79 159 96 36 20 360 23 33 33 30 34 32 171 91 --- 80 34 20 191 21 28 27 31 33 --- 96 97 --- 73 --- 21 --- 20 27 --- TOTAL 1468 1368 1928 3074 2818 2560 1775 1094 2350 1262 2614 1485 MEAN 47.4 45.6 62.2 99.2 97.2 82.6 59.2 35.3 78.3 40.7 84.3 49.5 MAX 83 153 339 181 333 327 266 131 360 174 415 151 MIN 33 31 32 63 14 21 30 19 21 14 17 19 CFSM 0.79 0.77 1.04 1.66 1.63 1.39 0.99 0.59 1.31 0.68 1.41 0.83 IN. 0.92 0.85 1.20 1.92 1.76 1.60 1.11 0.68 1.47 0.79 1.63 0.93 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1992, BY WATER YEAR (WY) MEAN 51.8 60.8 78.5 111 108 115 83.2 59.3 59.7 68.5 70.5 50.7 MAX 241 142 200 213 228 244 192 182 159 174 261 141 (WY) 1991 1987 1977 1987 1979 1971 1983 1991 1973 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1991 CALENDAR YEAR FOR 1992 WATER YEAR WATER YEARS 1967 - 1992 ANNUAL TOTAL 23796 ANNUAL MEAN 65.0 76.4 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 415 Aug 14 1730 Aug 20 1986 LOWEST DAILY MEAN 14 Feb 20 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 17 Jul 12 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 557 Feb 26 2410 Aug 12 1986 MAXIMUM PEAK STAGE 5.22 Feb 26 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 1.09 1.28 ANNUAL RUNOFF (INCHES) 14.85 17.42 10 PERCENT EXCEEDS 136 153 50 PERCENT EXCEEDS 44 50 90 PERCENT EXCEEDS 21 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1992 TO SEPTEMBER 1993 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 27 31 65 160 102 61 80 37 37 27 14 10 2 24 34 60 130 101 32 70 35 29 25 13 9.9 3 23 43 55 120 90 31 65 34 28 22 12 9.2 4 500 70 50 110 79 161 62 54 25 20 14 8.7 5 394 111 45 600 62 220 130 109 24 19 13 79 6 199 82 40 400 81 139 200 81 23 114 12 161 7 108 57 108 650 121 101 150 59 21 78 29 130 8 85 44 100 1700 209 86 114 47 21 34 55 94 9 90 38 90 861 195 78 101 41 20 20 54 65 10 46 34 120 429 166 70 109 37 20 17 43 43 11 78 33 160 274 153 65 105 35 18 18 33 30 12 69 172 100 309 149 60 91 32 17 18 29 23 13 55 336 75 299 130 150 78 39 20 16 25 19 14 46 151 60 220 116 340 39 69 24 15 61 58 15 41 88 55 173 111 160 11 59 25 13 55 26 16 37 62 65 144 124 140 12 47 25 12 34 67 17 35 51 80 132 152 130 12 39 23 12 24 97 18 32 46 65 125 161 110 18 35 22 12 20 52 19 30 43 55 119 75 90 33 47 20 13 19 37 20 29 43 50 112 22 80 47 52 19 20 17 34 21 29 82 50 480 41 75 47 46 18 17 16 43 22 29 110 55 490 81 70 45 38 17 16 14 44 23 29 99 50 283 91 150 42 34 16 16 13 44 24 28 102 45 206 94 200 41 30 15 15 12 40 25 28 102 43 283 90 140 40 28 14 15 12 34 26 28 189 45 219 92 250 45 27 18 15 11 30 27 27 150 150 162 80 430 47 27 22 16 11 22 28 29 110 330 138 69 200 43 26 21 19 10 9.6 29 30 80 220 126 --- 120 40 35 31 22 10 9.7 30 29 70 200 117 --- 100 37 30 30 20 10 33 31 31 --- 180 109 --- 90 --- 27 --- 17 11 --- TOTAL 2265 2663 2866 9680 3037 4129 1954 1336 663 713 706 1362.1 MEAN 73.1 88.8 92.5 312 108 133 65.1 43.1 22.1 23.0 22.8 45.4 MAX 500 336 330 1700 209 430 200 109 37 114 61 161 MIN 23 31 40 109 22 31 11 26 14 12 10 8.7 CFSM 1.23 1.49 1.55 5.24 1.82 2.23 1.09 0.72 0.37 0.39 0.38 0.76 IN. 1.41 1.66 1.79 6.04 1.90 2.58 1.22 0.83 0.41 0.45 0.44 0.85 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1993, BY WATER YEAR (WY) MEAN 52.5 61.9 79.0 119 108 116 82.5 58.7 58.4 66.9 68.7 50.5 MAX 241 142 200 312 228 244 192 182 159 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1973 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1992 CALENDAR YEAR FOR 1993 WATER YEAR WATER YEARS 1967 - 1993 ANNUAL TOTAL 31374.1 ANNUAL MEAN 86.0 76.8 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 1700 Jan 8 1730 Aug 20 1986 LOWEST DAILY MEAN 8.7 Sep 4 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 9.8 Aug 29 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1870 Jan 8 2410 Aug 12 1986 MAXIMUM PEAK STAGE 8.43 Jan 8 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 1.44 1.29 ANNUAL RUNOFF (INCHES) 19.58 17.50 10 PERCENT EXCEEDS 168 154 50 PERCENT EXCEEDS 46 49 90 PERCENT EXCEEDS 16 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1993 TO SEPTEMBER 1994 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 23 130 63 250 65 77 70 18 4.5 68 63 20 2 14 81 62 80 60 324 59 16 4.5 51 32 21 3 14 64 68 420 55 279 52 29 4.7 40 34 25 4 15 55 76 280 55 177 47 122 30 32 68 26 5 14 90 133 80 160 112 43 82 8.3 47 54 23 6 14 75 78 75 65 84 43 62 96 61 43 19 7 14 62 63 65 60 69 42 47 28 34 22 17 8 14 55 54 60 280 61 37 45 47 33 19 14 9 14 48 45 55 78 58 34 38 77 27 19 13 10 15 44 59 55 127 77 33 30 45 22 19 15 11 14 40 83 50 132 31 33 26 36 74 29 13 12 13 43 64 400 118 62 32 24 30 104 24 12 13 13 37 56 100 95 59 42 24 25 93 73 12 14 13 39 300 80 82 56 37 20 22 32 58 12 15 13 33 100 70 73 52 35 18 19 14 72 12 16 15 31 60 65 68 48 35 20 14 11 181 12 17 17 30 45 300 63 44 29 18 11 11 197 12 18 17 31 40 150 59 42 27 16 19 14 147 176 19 17 29 45 70 54 40 25 15 24 12 112 298 20 18 30 180 70 49 40 25 14 22 17 83 145 21 18 33 90 65 45 39 23 13 19 15 126 99 22 48 28 65 65 44 36 22 11 16 24 113 69 23 66 26 200 60 147 35 19 10 14 40 82 51 24 38 26 60 60 540 37 18 11 14 27 75 192 25 34 26 55 55 342 274 18 11 14 31 67 160 26 35 26 45 70 193 143 18 12 15 44 55 114 27 30 326 50 65 121 107 18 13 507 77 39 86 28 26 409 45 300 84 94 17 12 206 40 27 63 29 27 145 100 90 --- 147 17 10 223 61 23 51 30 471 81 50 150 --- 101 17 7.5 119 84 38 46 31 423 --- 45 75 --- 82 --- 5.0 --- 82 53 --- TOTAL 1517 2173 2479 3830 3314 2887 967 799.5 1714.0 1322 2047 1828 MEAN 48.9 72.4 80.0 124 118 93.1 32.2 25.8 57.1 42.6 66.0 60.9 MAX 471 409 300 420 540 324 70 122 507 104 197 298 MIN 13 26 40 50 44 31 17 5.0 4.5 11 19 12 CFSM 0.82 1.22 1.34 2.07 1.99 1.56 0.54 0.43 0.96 0.72 1.11 1.02 IN. 0.95 1.36 1.55 2.39 2.07 1.80 0.60 0.50 1.07 0.83 1.28 1.14 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1994, BY WATER YEAR (WY) MEAN 52.4 62.2 79.0 119 108 115 80.7 57.5 58.3 66.0 68.6 50.9 MAX 241 142 200 312 228 244 192 182 159 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1973 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1993 CALENDAR YEAR FOR 1994 WATER YEAR WATER YEARS 1967 - 1994 ANNUAL TOTAL 24877.5 ANNUAL MEAN 68.2 76.4 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 540 Feb 24 1730 Aug 20 1986 LOWEST DAILY MEAN 4.5 Jun 1 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 6.9 May 28 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1180 Jun 27 2410 Aug 12 1986 MAXIMUM PEAK STAGE 7.04 Jun 27 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 1.14 1.28 ANNUAL RUNOFF (INCHES) 15.53 17.43 10 PERCENT EXCEEDS 146 153 50 PERCENT EXCEEDS 45 49 90 PERCENT EXCEEDS 14 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 35 187 101 69 127 385 43 22 114 70 24 48 2 33 97 81 90 96 306 41 35 397 55 23 52 3 102 72 67 97 84 228 37 31 226 45 91 40 4 90 60 61 91 97 193 34 29 148 39 83 34 5 62 49 84 81 75 153 34 27 352 35 58 30 6 50 42 69 66 66 141 38 23 771 103 44 28 7 43 38 61 219 58 117 38 21 393 68 36 27 8 35 34 55 137 46 124 36 19 226 38 29 27 9 29 33 49 149 38 116 34 18 112 31 25 25 10 77 34 46 135 63 93 32 18 97 27 23 29 11 65 47 61 115 326 85 30 17 368 28 21 28 12 69 41 49 76 256 81 33 17 664 31 19 28 13 254 37 47 63 188 76 48 16 571 28 17 30 14 184 36 46 477 154 72 41 16 239 27 16 39 15 123 30 43 413 137 70 37 18 156 28 15 41 16 97 30 41 244 264 68 32 21 109 62 15 38 17 69 35 41 183 459 67 30 21 78 225 14 37 18 35 30 40 174 776 65 28 21 58 139 16 34 19 40 35 39 147 531 51 25 28 57 323 46 29 20 54 36 38 104 346 40 24 29 53 132 40 26 21 61 103 38 84 280 36 23 25 56 82 34 26 22 50 88 190 79 207 36 23 22 59 65 32 31 23 65 70 1030 129 166 47 26 19 50 69 30 285 24 51 61 676 110 146 50 79 18 45 51 31 225 25 46 51 390 103 124 50 53 17 42 38 47 110 26 41 52 246 106 94 44 46 16 44 32 631 76 27 35 121 159 84 96 46 37 17 126 28 565 60 28 32 124 115 180 114 48 31 19 79 26 303 49 29 30 158 87 152 --- 46 27 32 99 30 195 42 30 31 139 67 140 --- 46 24 46 88 30 110 36 31 46 --- 71 137 --- 45 --- 32 --- 27 40 --- TOTAL 2034 1970 4188 4434 5414 3025 1064 710 5877 2012 2673 1610 MEAN 65.6 65.7 135 143 193 97.6 35.5 22.9 196 64.9 86.2 53.7 MAX 254 187 1030 477 776 385 79 46 771 323 631 285 MIN 29 30 38 63 38 36 23 16 42 26 14 25 CFSM 1.10 1.10 2.27 2.40 3.24 1.64 0.60 0.38 3.29 1.09 1.45 0.90 IN. 1.27 1.23 2.61 2.77 3.38 1.89 0.66 0.44 3.67 1.26 1.67 1.00 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1995, BY WATER YEAR (WY) MEAN 52.9 62.4 81.0 120 111 115 79.2 56.3 63.1 66.0 69.2 51.0 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1994 CALENDAR YEAR FOR 1995 WATER YEAR WATER YEARS 1967 - 1995 ANNUAL TOTAL 35011 ANNUAL MEAN 95.9 77.1 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 1030 Dec 23 1730 Aug 20 1986 LOWEST DAILY MEAN 14 Aug 17 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 16 Aug 12 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1480 Dec 23 2410 Aug 12 1986 MAXIMUM PEAK STAGE 7.68 Dec 23 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 1.61 1.29 ANNUAL RUNOFF (INCHES) 21.85 17.58 10 PERCENT EXCEEDS 221 154 50 PERCENT EXCEEDS 50 49 90 PERCENT EXCEEDS 25 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 33 70 49 65 115 31 175 88 56 15 26 17 2 30 92 48 58 123 28 134 63 48 14 86 19 3 28 120 47 57 148 27 97 52 40 12 105 21 4 477 82 46 91 118 25 80 45 43 11 65 49 5 417 64 45 120 112 25 69 40 58 13 52 63 6 187 57 44 119 110 44 96 37 43 17 137 38 7 122 87 90 125 70 696 94 36 35 16 76 25 8 87 100 72 105 12 351 74 35 48 17 42 20 9 63 71 92 115 12 190 67 32 58 18 36 15 10 24 61 77 101 14 131 64 29 41 17 32 12 11 33 129 64 78 27 101 58 27 33 16 28 34 12 42 189 59 82 43 92 65 26 32 24 28 46 13 42 128 55 77 49 83 57 24 55 28 56 52 14 69 90 52 74 48 73 63 23 31 23 161 36 15 93 79 50 76 47 97 61 22 27 35 61 27 16 66 68 50 86 47 114 56 22 24 120 39 33 17 53 62 47 93 44 98 49 22 31 86 31 37 18 45 58 47 94 50 92 43 21 31 40 28 30 19 41 55 121 96 69 107 42 21 22 31 24 26 20 39 54 102 77 50 93 44 21 20 25 22 23 21 38 52 60 66 40 77 44 20 23 22 20 94 22 35 50 55 61 34 66 44 19 23 19 19 344 23 33 48 58 59 32 59 45 18 23 32 29 115 24 31 55 55 61 30 55 44 13 25 46 27 65 25 30 63 52 59 28 53 38 10 23 28 30 44 26 29 58 50 57 27 58 51 119 23 26 33 33 27 66 56 48 155 27 60 58 404 21 51 25 40 28 258 54 48 120 38 215 50 445 19 42 35 37 29 105 53 47 114 38 165 46 180 18 26 34 37 30 68 51 46 117 --- 116 143 117 16 22 23 69 31 68 --- 51 122 --- 99 --- 53 --- 22 20 --- TOTAL 2752 2256 1827 2780 1602 3521 2051 2084 990 914 1430 1501 MEAN 88.8 75.2 58.9 89.7 55.2 114 68.4 67.2 33.0 29.5 46.1 50.0 MAX 477 189 121 155 148 696 175 445 58 120 161 344 MIN 24 48 44 57 12 25 38 10 16 11 19 12 CFSM 1.49 1.26 0.99 1.50 0.93 1.91 1.15 1.13 0.55 0.49 0.77 0.84 IN. 1.72 1.41 1.14 1.74 1.00 2.20 1.28 1.30 0.62 0.57 0.89 0.94 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1996, BY WATER YEAR (WY) MEAN 54.1 62.8 80.2 119 109 115 78.8 56.7 62.1 64.7 68.5 50.9 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1967 - 1996 ANNUAL TOTAL 23708 ANNUAL MEAN 64.8 76.7 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 696 Mar 7 1730 Aug 20 1986 LOWEST DAILY MEAN 10 May 25 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 14 Jun 30 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1310 Mar 7 2410 Aug 12 1986 MAXIMUM PEAK STAGE 7.32 Mar 7 9.33 Aug 12 1986 ANNUAL RUNOFF (CFSM) 1.09 1.29 ANNUAL RUNOFF (INCHES) 14.80 17.49 10 PERCENT EXCEEDS 117 153 50 PERCENT EXCEEDS 49 49 90 PERCENT EXCEEDS 21 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 89 22 92 41 86 108 37 102 23 91 326 24 2 53 25 105 42 84 95 34 96 22 97 167 19 3 43 24 73 43 170 98 31 192 44 76 114 17 4 35 24 58 40 142 94 30 181 46 59 106 16 5 29 24 54 59 82 84 29 128 29 45 76 13 6 26 24 52 57 62 75 30 94 103 36 61 12 7 86 27 74 56 56 67 33 68 76 31 48 12 8 361 98 70 96 75 38 29 50 59 26 39 12 9 195 88 54 400 67 13 28 48 47 55 33 11 10 114 63 47 262 71 13 26 44 37 172 47 13 11 33 51 43 184 70 13 24 30 30 89 35 14 12 36 41 41 139 72 11 51 25 32 55 32 14 13 38 36 41 113 118 17 49 23 59 41 31 14 14 34 33 38 91 203 96 48 21 109 31 30 15 15 32 31 38 71 270 42 43 21 308 39 27 15 16 30 28 36 177 259 27 38 20 107 57 24 14 17 28 27 34 116 220 35 34 20 82 64 22 13 18 27 31 41 116 172 57 29 19 77 40 20 13 19 26 46 102 110 134 56 28 18 61 35 18 13 20 24 41 76 93 106 57 28 17 50 30 17 13 21 23 50 64 79 102 50 27 16 100 25 17 14 22 22 68 54 71 137 48 30 15 91 23 17 12 23 22 52 47 58 112 44 160 15 60 133 15 11 24 22 46 43 68 100 40 55 14 45 1530 14 33 25 22 42 44 99 88 37 32 19 35 571 14 570 26 22 40 45 78 79 42 29 21 25 341 13 321 27 22 36 46 105 72 44 135 29 59 222 13 180 28 22 33 44 95 82 50 590 25 135 139 13 268 29 23 32 45 88 --- 58 360 24 83 75 13 157 30 22 31 43 103 --- 50 229 23 64 180 18 91 31 22 --- 41 89 --- 43 --- 23 --- 469 20 --- TOTAL 1583 1214 1685 3239 3291 1602 2326 1441 2098 4877 1440 1944 MEAN 51.1 40.5 54.4 104 118 51.7 77.5 46.5 69.9 157 46.5 64.8 MAX 361 98 105 400 270 108 590 192 308 1530 326 570 MIN 22 22 34 40 56 11 24 14 22 23 13 11 CFSM 0.86 0.68 0.91 1.75 1.97 0.87 1.30 0.78 1.17 2.64 0.78 1.09 IN. 0.99 0.76 1.05 2.02 2.05 1.00 1.45 0.90 1.31 3.04 0.90 1.21 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1997, BY WATER YEAR (WY) MEAN 54.0 62.1 79.4 118 110 113 78.8 56.3 62.3 67.7 67.8 51.4 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1967 - 1997 ANNUAL TOTAL 26740 ANNUAL MEAN 73.3 76.6 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 1530 Jul 24 1730 Aug 20 1986 LOWEST DAILY MEAN 11 Mar 12 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 12 Sep 5 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 2480 Jul 24 2480 Jul 24 1997 MAXIMUM PEAK STAGE 9.43 Jul 24 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 1.23 1.29 ANNUAL RUNOFF (INCHES) 16.69 17.46 10 PERCENT EXCEEDS 138 153 50 PERCENT EXCEEDS 44 49 90 PERCENT EXCEEDS 17 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 66 112 206 83 164 129 9.4 104 33 16 22 21 2 50 222 140 72 139 121 111 99 33 15 20 11 3 38 138 102 36 223 109 224 97 32 14 18 592 4 20 96 81 63 475 86 346 96 36 14 16 907 5 18 70 68 62 862 62 294 87 65 15 14 386 6 20 57 59 217 494 51 229 75 70 14 14 268 7 23 50 54 277 337 53 166 81 61 13 14 143 8 23 47 51 342 261 216 127 145 51 12 28 93 9 22 44 83 268 202 564 254 134 43 11 109 64 10 21 43 80 184 165 420 183 129 53 11 128 50 11 22 42 78 128 143 301 102 101 56 10 75 44 12 21 46 115 99 130 220 118 82 46 9.6 58 36 13 20 217 102 87 118 157 88 69 42 9.3 62 34 14 20 210 87 78 103 122 94 61 39 8.9 144 33 15 34 148 72 139 88 101 93 57 36 9.5 787 30 16 63 105 60 301 89 89 89 48 31 15 466 30 17 53 78 55 273 185 83 111 44 28 17 242 29 18 126 65 51 184 173 143 517 42 25 18 147 28 19 337 56 48 231 173 324 408 42 28 23 98 30 20 187 52 47 176 157 368 290 41 32 101 63 29 21 114 83 48 150 131 294 183 48 27 59 45 60 22 94 120 184 147 124 216 159 68 25 41 34 62 23 71 96 158 426 157 154 164 46 23 34 30 46 24 57 80 379 313 142 118 145 9.9 21 29 27 37 25 50 65 438 223 132 103 120 11 19 26 26 32 26 162 56 232 253 120 97 99 16 19 25 24 30 27 231 52 254 522 124 101 87 22 20 24 20 25 28 132 48 194 556 143 98 79 37 19 27 18 e26 29 91 54 148 359 --- 93 71 47 18 27 22 e30 30 67 281 120 280 --- 89 84 40 17 26 26 37 31 56 --- 98 210 --- 41 --- 35 --- 24 25 --- TOTAL 2309 2833 3892 6739 5754 5123 5044.4 2013.9 1048 698.3 2822 3243 MEAN 74.5 94.4 126 217 206 165 168 65.0 34.9 22.5 91.0 108 MAX 337 281 438 556 862 564 517 145 70 101 787 907 MIN 18 42 47 36 88 41 9.4 9.9 17 8.9 14 11 CFSM 1.25 1.58 2.11 3.65 3.45 2.77 2.82 1.09 0.59 0.38 1.53 1.81 IN. 1.44 1.77 2.43 4.21 3.59 3.20 3.15 1.26 0.65 0.44 1.76 2.02 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1998, BY WATER YEAR (WY) MEAN 54.6 63.1 80.8 121 113 114 81.6 56.6 61.5 66.3 68.5 53.2 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1967 - 1998 ANNUAL TOTAL 41519.6 ANNUAL MEAN 114 77.8 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 907 Sep 4 1730 Aug 20 1986 LOWEST DAILY MEAN 8.9 Jul 14 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 9.9 Jul 9 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1670 Aug 15 2480 Jul 24 1997 MAXIMUM PEAK STAGE 8.07 Aug 15 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 1.91 1.30 ANNUAL RUNOFF (INCHES) 25.91 17.73 10 PERCENT EXCEEDS 264 157 50 PERCENT EXCEEDS 72 50 90 PERCENT EXCEEDS 20 17 e Estimated 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 37 26 32 34 169 47 77 553 13 69 13 12 2 34 27 31 39 141 45 82 349 13 50 12 11 3 32 29 30 175 110 42 68 197 15 40 10 10 4 32 29 30 131 98 40 57 79 14 33 9.2 9.3 5 31 28 30 108 96 35 50 82 12 40 8.9 9.9 6 30 27 30 93 95 20 44 118 11 38 8.9 15 7 30 27 30 82 71 17 41 141 11 27 8.6 12 8 36 30 31 74 64 14 38 108 11 25 8.6 10 9 35 32 31 54 62 22 36 83 10 27 8.4 9.8 10 36 32 29 42 59 37 34 60 9.9 25 8.2 9.1 11 35 33 28 44 55 42 32 46 10 90 8.2 8.1 12 33 32 28 63 61 42 29 39 9.9 198 8.0 7.5 13 31 32 34 56 58 42 26 60 9.5 100 7.8 6.9 14 30 33 40 64 52 127 24 87 9.6 92 12 9.3 15 28 62 73 151 51 130 43 52 11 67 11 79 16 27 63 228 74 48 103 47 43 28 52 36 59 17 26 62 138 86 47 82 32 36 57 40 29 23 18 25 56 87 132 55 65 29 31 44 33 14 17 19 25 51 60 96 78 55 26 29 40 29 11 15 20 26 46 47 80 69 48 24 25 33 27 9.6 28 21 25 42 40 64 63 85 22 23 28 23 9.5 44 22 24 38 40 55 54 89 21 31 24 20 8.1 22 23 22 36 36 165 50 74 20 25 21 19 7.2 8.2 24 23 36 56 360 50 62 20 22 19 32 7.1 6.7 25 24 35 117 241 49 67 18 18 165 45 7.1 7.5 26 24 36 99 196 48 89 18 17 652 28 97 13 27 24 34 73 167 47 79 61 16 261 22 47 67 28 25 33 56 126 48 70 144 15 206 19 30 197 29 25 32 47 95 --- 59 104 14 139 17 24 253 30 25 32 41 79 --- 51 489 14 100 15 18 148 31 26 --- 36 74 --- 46 --- 13 --- 14 14 --- TOTAL 886 1111 1708 3300 1948 1826 1756 2426 1986.9 1356 511.4 1127.3 MEAN 28.6 37.0 55.1 106 69.6 58.9 58.5 78.3 66.2 43.7 16.5 37.6 MAX 37 63 228 360 169 130 489 553 652 198 97 253 MIN 22 26 28 34 47 14 18 13 9.5 14 7.1 6.7 CFSM 0.48 0.62 0.92 1.79 1.17 0.99 0.98 1.31 1.11 0.73 0.28 0.63 IN. 0.55 0.69 1.07 2.06 1.22 1.14 1.10 1.51 1.24 0.85 0.32 0.70 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1999, BY WATER YEAR (WY) MEAN 53.8 62.3 80.1 121 111 113 80.9 57.3 61.6 65.6 66.9 52.7 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.7 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 1980 1983 1984 SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1967 - 1999 ANNUAL TOTAL 19942.6 ANNUAL MEAN 54.6 77.1 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 652 Jun 26 1730 Aug 20 1986 LOWEST DAILY MEAN 6.7 Sep 24 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 8.3 Aug 7 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1160 Jun 26 2480 Jul 24 1997 MAXIMUM PEAK STAGE 6.99 Jun 26 9.43 Jul 24 1997 INSTANTANEOUS LOW FLOW 6.5 Sep 13 6.5 Sep 13 1999 ANNUAL RUNOFF (CFSM) 0.917 1.29 ANNUAL RUNOFF (INCHES) 12.45 17.57 10 PERCENT EXCEEDS 106 155 50 PERCENT EXCEEDS 35 49 90 PERCENT EXCEEDS 11 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 89 27 32 33 247 46 36 27 7.9 27 59 38 2 63 45 31 32 240 44 35 29 7.8 21 130 46 3 52 36 29 32 192 42 24 112 7.7 17 134 55 4 59 30 30 40 141 52 8.6 47 7.6 14 124 45 5 65 28 30 45 116 58 8.2 30 54 12 80 110 6 47 27 36 39 100 58 8.2 20 62 11 62 98 7 39 26 33 37 88 54 8.1 15 35 20 45 66 8 32 28 31 35 79 37 13 11 26 27 33 49 9 28 27 30 50 72 23 9.0 7.9 21 18 26 37 10 25 26 27 548 66 46 9.8 7.5 17 14 22 30 11 25 31 25 301 62 77 15 7.5 14 13 19 25 12 24 33 23 198 62 88 19 7.7 12 13 16 21 13 319 27 23 140 68 79 22 7.9 11 20 15 19 14 236 26 41 95 199 69 27 8.1 11 15 14 17 15 110 27 38 69 257 59 48 8.3 14 13 14 17 16 76 26 35 56 215 63 50 8.0 27 11 14 15 17 71 26 33 53 164 75 56 7.6 50 10 13 15 18 56 25 33 51 122 68 57 7.4 42 10 13 38 19 47 25 68 47 96 56 45 7.6 25 9.9 13 46 20 49 26 68 75 80 219 38 7.9 19 9.7 13 30 21 40 26 63 55 69 232 33 8.0 17 9.4 12 28 22 34 27 60 49 61 188 30 8.7 16 9.3 12 327 23 31 32 52 212 55 147 27 8.2 17 16 12 513 24 27 31 47 451 52 112 25 8.1 15 21 17 266 25 25 30 42 580 50 84 26 9.4 13 14 16 549 26 25 51 38 384 48 69 25 9.4 12 12 15 254 27 24 43 37 253 49 58 23 8.8 12 14 15 129 28 25 38 35 187 50 51 25 8.7 11 30 14 114 29 25 40 33 157 48 46 27 8.4 20 17 14 90 30 25 37 33 309 --- 43 29 8.1 27 14 33 69 31 25 --- 32 315 --- 39 --- 8.0 --- 15 62 --- TOTAL 1818 927 1168 4928 3148 2382 806.9 478.2 631.0 477.3 1081 3156 MEAN 58.6 30.9 37.7 159 109 76.8 26.9 15.4 21.0 15.4 34.9 105 MAX 319 51 68 580 257 232 57 112 62 30 134 549 MIN 24 25 23 32 48 23 8.1 7.4 7.6 9.3 12 15 CFSM 0.98 0.52 0.63 2.67 1.82 1.29 0.45 0.26 0.35 0.26 0.59 1.77 IN. 1.13 0.58 0.73 3.08 1.96 1.49 0.50 0.30 0.39 0.30 0.67 1.97 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2000, BY WATER YEAR (WY) MEAN 54.0 61.4 78.8 122 111 112 79.3 56.0 60.4 64.2 66.0 54.2 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.4 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 2000 1983 1984 SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1967 - 2000 ANNUAL TOTAL 21001.4 ANNUAL MEAN 57.4 76.5 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 580 Jan 25 1730 Aug 20 1986 LOWEST DAILY MEAN 7.4 May 18 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 7.8 May 15 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1040 Sep 22 2480 Jul 24 1997 MAXIMUM PEAK STAGE 6.69 Sep 22 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 0.963 1.28 ANNUAL RUNOFF (INCHES) 13.11 17.43 10 PERCENT EXCEEDS 123 154 50 PERCENT EXCEEDS 32 48 90 PERCENT EXCEEDS 9.9 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 46 11 35 34 31 33 75 20 19 36 26 24 2 36 11 33 33 30 34 37 19 19 34 23 75 3 33 11 31 32 30 68 29 18 78 376 21 52 4 30 11 30 31 34 149 111 17 61 451 19 38 5 28 12 30 31 32 62 105 16 29 255 17 31 6 27 10 30 31 31 69 46 16 21 116 16 26 7 25 9.2 31 31 30 106 27 15 17 68 15 23 8 23 8.8 30 98 30 101 31 14 16 48 14 21 9 20 9.2 30 109 30 95 28 14 17 38 13 20 10 19 10 31 91 31 85 20 13 15 33 40 18 11 18 9.8 29 57 29 62 22 10 15 32 432 16 12 18 10 29 71 55 60 26 26 19 32 111 15 13 20 10 28 61 42 64 29 23 101 29 69 13 14 19 23 34 59 34 53 30 14 92 25 93 12 15 18 22 39 63 33 180 30 12 79 22 80 12 16 18 20 41 99 33 98 30 8.4 75 20 47 9.5 17 17 26 62 54 56 93 29 7.8 139 18 35 8.6 18 17 26 54 57 47 88 27 7.5 177 16 48 8.2 19 16 93 45 62 55 83 25 6.9 121 16 38 7.7 20 15 95 38 128 67 130 24 6.9 70 123 28 8.6 21 14 52 35 77 68 120 23 7.7 43 81 24 8.7 22 14 40 32 98 174 93 22 7.9 34 53 21 8.4 23 14 34 31 109 117 87 22 8.0 34 41 19 8.3 24 14 30 30 88 102 207 21 7.6 91 38 17 14 25 13 180 30 80 95 102 25 7.6 94 35 15 14 26 13 146 28 75 85 22 26 8.0 50 50 13 13 27 13 74 30 67 73 40 25 7.6 40 53 12 13 28 13 55 42 45 48 56 25 7.7 71 57 11 12 29 12 45 38 34 --- 117 24 24 78 41 10 12 30 12 39 37 32 --- 135 22 11 45 35 13 11 31 11 --- 36 31 --- 90 --- 14 --- 29 13 --- TOTAL 606 1133.0 1079 1968 1522 2782 1016 395.6 1760 2301 1353 553.0 MEAN 19.5 37.8 34.8 63.5 54.4 89.7 33.9 12.8 58.7 74.2 43.6 18.4 MAX 46 180 62 128 174 207 111 26 177 451 432 75 MIN 11 8.8 28 31 29 22 20 6.9 15 16 10 7.7 CFSM 0.33 0.63 0.58 1.07 0.91 1.51 0.57 0.21 0.98 1.25 0.73 0.31 IN. 0.38 0.71 0.67 1.23 0.95 1.74 0.63 0.25 1.10 1.44 0.84 0.35 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2001, BY WATER YEAR (WY) MEAN 53.0 60.7 77.6 120 110 111 78.0 54.8 60.4 64.4 65.3 53.2 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 10.9 15.8 33.2 42.1 37.6 22.7 12.9 6.06 13.0 15.4 3.89 12.5 (WY) 1979 1979 1989 1981 1986 1985 1986 1986 1986 2000 1983 1984 SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1967 - 2001 ANNUAL TOTAL 16468.6 ANNUAL MEAN 45.1 75.6 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 44.7 1985 HIGHEST DAILY MEAN 451 Jul 4 1730 Aug 20 1986 LOWEST DAILY MEAN 6.9 May 19 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 7.5 May 18 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1250 Jul 3 2480 Jul 24 1997 MAXIMUM PEAK STAGE 7.20 Jul 3 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 0.757 1.27 ANNUAL RUNOFF (INCHES) 10.28 17.23 10 PERCENT EXCEEDS 95 152 50 PERCENT EXCEEDS 30 48 90 PERCENT EXCEEDS 11 16 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 9.3 5.7 16 8.3 39 14 45 44 10 26 11 25 2 8.5 5.4 14 33 35 55 32 33 9.7 25 9.2 20 3 7.9 6.0 11 102 24 58 26 26 9.1 31 8.4 16 4 7.2 7.0 10 70 17 38 21 94 8.5 18 8.3 13 5 6.8 7.7 9.2 123 13 34 16 67 8.1 13 7.6 9.8 6 6.7 7.4 9.0 194 28 6.2 14 44 9.2 11 15 7.6 7 7.4 7.0 8.8 107 121 5.7 12 32 22 11 12 6.2 8 6.8 6.6 8.7 64 107 5.0 11 25 48 10 8.8 4.8 9 6.0 6.3 8.8 45 97 4.9 12 20 48 9.4 8.2 4.3 10 5.6 6.5 19 38 91 4.8 80 16 38 9.3 8.2 3.8 11 5.5 6.7 31 44 83 4.2 55 314 25 9.0 8.5 3.5 12 5.6 7.0 37 76 71 7.9 70 141 18 8.2 8.3 3.2 13 5.7 7.8 36 77 57 18 90 76 13 7.7 7.4 3.4 14 7.8 7.7 38 62 46 17 66 88 13 7.3 8.9 157 15 8.7 8.0 32 51 38 14 50 59 15 7.2 4.6 266 16 8.4 8.2 27 44 30 15 39 39 12 7.1 6.4 322 17 8.1 8.6 26 43 27 16 32 29 11 6.6 31 122 18 7.5 8.6 31 49 24 15 27 75 8.8 6.0 51 284 19 7.0 8.8 27 59 23 13 23 70 8.1 5.5 18 349 20 6.8 8.9 22 67 22 7.4 19 45 8.0 5.2 9.0 317 21 7.1 9.7 18 55 21 41 16 33 7.9 5.6 6.9 150 22 7.5 9.7 16 38 20 40 13 26 7.6 17 6.4 87 23 7.5 12 14 29 19 31 10 21 7.3 10 5.8 52 24 7.6 23 13 27 18 27 8.9 19 7.3 9.5 5.5 34 25 7.7 18 12 40 18 25 10 17 13 8.6 6.6 26 26 7.2 27 11 40 18 24 9.5 15 9.6 7.7 4.2 57 27 6.1 25 10 40 16 24 8.3 13 9.0 5.7 5.4 60 28 5.4 22 9.5 39 14 20 7.9 11 9.6 5.1 47 48 29 6.4 20 9.2 37 --- 17 7.8 10 64 5.2 35 34 30 7.4 18 8.6 34 --- 41 7.7 10 52 5.1 44 26 31 6.3 --- 8.3 32 --- 63 --- 10 --- 18 36 --- TOTAL 219.5 330.3 551.1 1767.3 1137 706.1 839.1 1522 529.8 331.0 452.6 2511.6 MEAN 7.08 11.0 17.8 57.0 40.6 22.8 28.0 49.1 17.7 10.7 14.6 83.7 MAX 9.3 27 38 194 121 63 90 314 64 31 51 349 MIN 5.4 5.4 8.3 8.3 13 4.2 7.7 10 7.3 5.1 4.2 3.2 CFSM 0.12 0.18 0.30 0.96 0.68 0.38 0.47 0.82 0.30 0.18 0.24 1.40 IN. 0.14 0.21 0.34 1.10 0.71 0.44 0.52 0.95 0.33 0.21 0.28 1.57 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2002, BY WATER YEAR (WY) MEAN 51.7 59.3 75.9 119 108 108 76.6 54.6 59.2 62.9 63.9 54.1 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 7.08 11.0 17.8 42.1 37.6 22.7 12.9 6.06 13.0 10.7 3.89 12.5 (WY) 2002 2002 2002 1981 1986 1985 1986 1986 1986 2002 1983 1984 SUMMARY STATISTICS FOR 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1967 - 2002 ANNUAL TOTAL 14751.5 10897.4 ANNUAL MEAN 40.4 29.9 74.3 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 29.9 2002 HIGHEST DAILY MEAN 451 Jul 4 349 Sep 19 1730 Aug 20 1986 LOWEST DAILY MEAN 5.4 Oct 28 3.2 Sep 12 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 6.1 Oct 7 4.2 Sep 7 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 602 May 11 2880 Feb 24 1979 MAXIMUM PEAK STAGE 5.38 May 11 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 0.678 0.501 1.25 ANNUAL RUNOFF (INCHES) 9.21 6.80 16.94 10 PERCENT EXCEEDS 93 64 151 50 PERCENT EXCEEDS 25 15 47 90 PERCENT EXCEEDS 7.6 6.3 15 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 20 36 22 48 77 122 73 44 37 30 84 15 2 16 29 21 e47 63 156 64 40 31 582 59 35 3 14 25 21 e43 56 117 57 49 45 299 51 55 4 13 24 23 40 56 93 52 43 46 196 47 102 5 11 26 54 37 49 71 49 40 44 124 42 113 6 10 39 45 36 46 250 53 142 68 80 45 85 7 9.6 33 40 34 75 397 98 226 113 56 52 93 8 33 29 36 32 59 265 111 128 88 42 154 304 9 42 26 32 30 48 173 381 94 62 32 96 181 10 57 23 30 30 79 128 542 73 48 29 76 109 11 150 57 57 28 75 97 422 55 54 90 64 74 12 99 203 45 27 60 79 255 42 72 85 57 53 13 65 141 228 25 51 115 167 34 57 60 52 42 14 44 85 194 25 44 126 63 29 41 145 169 36 15 56 62 119 25 40 252 75 31 35 111 176 32 16 151 89 86 27 127 456 75 86 34 85 94 29 17 92 132 64 33 239 334 66 94 84 107 70 27 18 61 104 51 29 135 391 74 68 190 284 55 23 19 44 76 45 27 102 248 98 55 226 296 45 21 20 34 60 84 27 82 710 79 46 97 204 39 19 21 28 50 77 28 82 528 78 41 61 130 34 18 22 23 43 61 36 149 328 116 68 45 160 31 19 23 20 37 51 44 125 207 89 186 38 418 29 41 24 20 35 278 43 101 103 69 118 31 315 26 34 25 22 32 293 39 89 101 149 87 27 171 25 30 26 28 30 148 36 67 87 130 150 24 68 24 27 27 24 28 107 34 102 78 93 147 21 81 22 25 28 28 24 80 31 92 72 75 87 32 74 20 22 29 70 23 66 32 --- 66 61 66 29 83 18 18 30 58 23 57 97 --- e67 50 52 25 100 16 15 31 45 --- 53 111 --- 72 --- 44 --- 83 15 --- TOTAL 1387.6 1624 2568 1181 2370 6289 3764 2465 1805 4620 1787 1697 MEAN 44.8 54.1 82.8 38.1 84.6 203 125 79.5 60.2 149 57.6 56.6 MAX 151 203 293 111 239 710 542 226 226 582 176 304 MIN 9.6 23 21 25 40 66 49 29 21 29 15 15 CFSM 0.75 0.91 1.39 0.64 1.42 3.40 2.11 1.33 1.01 2.50 0.97 0.95 IN. 0.87 1.01 1.60 0.74 1.48 3.93 2.35 1.54 1.13 2.88 1.12 1.06 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2003, BY WATER YEAR (WY) MEAN 51.5 59.2 76.1 116 107 111 77.9 55.3 59.2 65.3 63.8 54.1 MAX 241 142 200 312 228 244 192 182 196 174 261 141 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 1987 MIN 7.08 11.0 17.8 38.1 37.6 22.7 12.9 6.06 13.0 10.7 3.89 12.5 (WY) 2002 2002 2002 2003 1986 1985 1986 1986 1986 2002 1983 1984 SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1967 - 2003 ANNUAL TOTAL 15376.1 31557.6 ANNUAL MEAN 42.1 86.5 74.6 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 29.9 2002 HIGHEST DAILY MEAN 349 Sep 19 710 Mar 20 1730 Aug 20 1986 LOWEST DAILY MEAN 3.2 Sep 12 9.6 Oct 7 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 4.2 Sep 7 13 Oct 1 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1180 Mar 20 2880 Feb 24 1979 MAXIMUM PEAK STAGE 7.03 Mar 20 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 0.707 1.45 1.25 ANNUAL RUNOFF (INCHES) 9.60 19.70 17.02 10 PERCENT EXCEEDS 88 178 151 50 PERCENT EXCEEDS 26 57 47 90 PERCENT EXCEEDS 7.4 24 15 e Estimated 1 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES STATION NUMBER 02169570 GILLS CREEK AT COLUMBIA, SC SOURCE AGENCY USGS STATE 45 COUNTY 079 LATITUDE 335922 LONGITUDE 0805828 NAD27 DRAINAGE AREA 59.60* CONTRIBUTING DRAINAGE AREA DATUM 137.38 NGVD29 Date Processed: 2005-04-11 11:56 By mishealy APPROVED DD #3, ,PUBLISHED Discharge, cubic feet per second WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 14 53 30 26 35 92 34 11 10 96 11 62 2 14 43 28 24 35 87 25 34 9.7 70 16 49 3 12 36 28 24 54 82 27 80 9.2 62 18 36 4 12 32 47 24 33 76 25 47 10 49 16 26 5 12 41 50 26 28 73 20 37 18 41 17 21 6 16 44 47 57 34 59 18 28 11 42 24 17 7 45 39 43 63 35 14 17 21 9.9 31 14 990 8 37 34 38 48 25 5.4 19 17 9.5 25 11 734 9 34 49 35 45 21 3.9 19 14 21 21 9.1 386 10 32 37 81 35 9.6 5.3 16 12 23 18 8.5 274 11 35 34 113 29 6.7 6.3 15 11 18 27 8.3 184 12 34 32 83 28 97 7.7 17 60 129 51 67 124 13 32 31 72 28 33 8.2 26 43 87 49 85 89 14 183 27 151 27 94 8.4 24 31 43 69 60 92 15 161 26 118 26 230 9.1 24 25 41 70 122 79 16 92 25 88 72 217 7.6 22 20 108 57 46 73 17 66 25 78 81 128 10 20 16 95 22 42 207 18 52 25 65 49 92 19 19 13 39 32 44 149 19 40 68 54 36 71 23 20 12 26 16 37 105 20 33 72 46 28 58 21 17 12 19 13 28 75 21 29 60 40 28 50 33 15 10 37 11 22 24 22 27 51 37 30 46 24 14 9.9 49 9.6 18 21 23 25 45 35 29 43 21 14 10 129 8.9 15 33 24 23 40 36 37 43 19 13 10 96 8.3 13 32 25 21 35 34 40 47 20 11 9.5 70 8.3 11 27 26 21 31 32 63 228 19 13 9.1 98 8.8 10 27 27 23 31 30 57 181 17 17 8.6 319 67 10 248 28 56 38 30 46 138 17 11 8.1 634 74 13 595 29 156 36 28 41 105 16 11 7.9 211 57 34 311 30 99 30 29 39 --- 27 10 20 133 18 48 187 31 71 --- 28 36 --- 51 --- 11 --- 11 56 --- TOTAL 1507 1170 1654 1222 2217.3 881.9 553 658.1 2512.3 1142.9 933.9 5277 MEAN 48.6 39.0 53.4 39.4 76.5 28.4 18.4 21.2 83.7 36.9 30.1 176 MAX 183 72 151 81 230 92 34 80 634 96 122 990 MIN 12 25 28 24 6.7 3.9 10 7.9 9.2 8.3 8.3 17 CFSM 0.82 0.65 0.90 0.66 1.28 0.48 0.31 0.36 1.41 0.62 0.51 2.95 IN. 0.94 0.73 1.03 0.76 1.38 0.55 0.35 0.41 1.57 0.71 0.58 3.29 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2004, BY WATER YEAR (WY) MEAN 51.4 58.6 75.5 114 106 109 76.4 54.4 59.8 64.5 62.9 57.3 MAX 241 142 200 312 228 244 192 182 196 174 261 176 (WY) 1991 1987 1977 1993 1979 1971 1983 1991 1995 1975 1986 2004 MIN 7.08 11.0 17.8 38.1 37.6 22.7 12.9 6.06 13.0 10.7 3.89 12.5 (WY) 2002 2002 2002 2003 1986 1985 1986 1986 1986 2002 1983 1984 SUMMARY STATISTICS FOR 2003 CALENDAR YEAR FOR 2004 WATER YEAR WATER YEARS 1967 - 2004 ANNUAL TOTAL 30309 19729.4 ANNUAL MEAN 83.0 53.9 74.1 HIGHEST ANNUAL MEAN 130 1991 LOWEST ANNUAL MEAN 29.9 2002 HIGHEST DAILY MEAN 710 Mar 20 990 Sep 7 1730 Aug 20 1986 LOWEST DAILY MEAN 12 Oct 3 3.9 Mar 9 1.6 Aug 1 1983 ANNUAL SEVEN-DAY MINIMUM 14 Sep 30 6.5 Mar 8 1.9 Jul 30 1983 MAXIMUM PEAK FLOW 1470 Sep 7 2880 Feb 24 1979 MAXIMUM PEAK STAGE 7.67 Sep 7 9.43 Jul 24 1997 ANNUAL RUNOFF (CFSM) 1.39 0.904 1.24 ANNUAL RUNOFF (INCHES) 18.92 12.31 16.89 10 PERCENT EXCEEDS 168 97 150 50 PERCENT EXCEEDS 53 32 46 90 PERCENT EXCEEDS 25 10 15