Station list     Available data
UPPER MISSISSIPPI RIVER BASIN


05587455                         MISSISSIPPI RIVER BELOW GRAFTON, IL



LOCATION.--Lat 38°57'04", long 90°22'16", in sec.24, T.6 N., R.11 W., Jersey County, Hydrologic Unit 07110009, 11.3 mi above Lock and Dam 26, 19.0 mi above mouth of Missouri River, and at mile 214.6 upstream from the mouth of the Ohio River.

DRAINAGE AREA.--171,300 mi2, approximately.

PERIOD OF RECORD.--March 1989 to current year. National stream-quality accounting network station 1989 to 1994.

REMARKS.--Established ambient water-quality monitoring network station November 1992. Sediment records fair.

PERIOD OF DAILY RECORD.--
SUSPENDED-SEDIMENT: October 1989 to current year.

EXTREMES FOR PERIOD OF DAILY RECORD.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,910 mg/L, May 23, 1990; minimum daily mean, 1 mg/L, Sept. 10, 1991.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 1,090,000 tons, May 23, 1990; minimum daily, 186 tons, Sept. 10, 1991.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 598 mg/L, Jan. 26; minimum daily mean, 48 mg/L, Dec. 5.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 327,000 tons, June 16; minimum daily, 5,080 tons, Dec. 26.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
MEAN MEAN MEAN
MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT
DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE
DAY (CFS) (mg/L) (TONS/DAY) (CFS) (mg/L) (TONS/DAY) (CFS) (mg/L) (TONS/DAY)
 
OCTOBER NOVEMBER DECEMBER
1 54800 104 14000 89500 115 27800 86200 68 15800
2 61400 93 15400 99100 210 57100 87400 54 12800
3 66800 85 15300 149000 281 114000 85100 54 12400
4 65700 121 21100 183000 313 155000 86900 66 15400
5 68800 180 33700 175000 358 168000 86700 48 11200
 
6 106000 205 62000 129000 304 107000 85500 51 11700
7 120000 360 116000 93600 192 48500 98600 77 21200
8 98200 358 96500 88000 147 34900 131000 114 40300
9 63800 190 38300 91200 123 30300 119000 116 37100
10 85000 174 39700 102000 138 39000 87800 99 23600
 
11 74100 152 30400 152000 317 132000 85900 63 14500
12 60600 112 18200 168000 345 157000 93200 65 16400
13 60000 118 19200 158000 345 147000 90400 66 16200
14 67300 100 18500 144000 235 91400 91600 68 16700
15 64000 94 17400 128000 224 77400 90000 59 14200
 
16 61400 120 19900 114000 200 61700 87200 57 13400
17 62000 92 17000 107000 164 47300 87000 53 12500
18 75000 99 21700 109000 151 44400 82600 57 12600
19 130000 434 124000 107000 143 41400 83300 62 13900
20 173000 431 201000 105000 131 37200 81600 65 14400
 
21 185000 391 195000 101000 118 32000 79900 71 15200
22 172000 259 120000 97600 111 29300 58600 72 11300
23 151000 247 100000 94700 101 25900 66600 59 10600
24 128000 246 84600 90500 82 20000 48800 64 8390
25 109000 244 72100 94200 78 19800 38700 60 6290
 
26 92600 149 37400 90400 80 19500 33900 55 5080
27 88100 143 34100 90100 80 19600 46100 50 6160
28 89700 157 38100 90000 75 18100 44600 52 6300
29 88800 111 26600 89500 67 16300 37800 67 6810
30 90300 131 32000 89700 70 17000 37000 66 6620
 
31 89700 166 40200 --- --- --- 38400 62 6460
 
JANUARY FEBRUARY MARCH
1 49000 68 8960 183000 382 188000 110000 104 31300
2 58200 76 12000 175000 394 187000 120000 115 37200
3 66300 85 15300 157000 316 134000 117000 126 39600
4 75400 96 19500 155000 282 118000 119000 154 49500
5 77700 107 21700 164000 266 118000 122000 150 49200
 
6 89700 117 28400 160000 269 116000 124000 126 42100
7 85800 109 25200 176000 408 195000 127000 142 48600
8 85400 99 22800 208000 500 283000 120000 176 57400
9 82400 91 20300 199000 585 316000 127000 170 58100
10 84800 90 20600 170000 383 176000 122000 162 53400
 
11 86100 90 20800 152000 328 134000 119000 147 47000
12 83100 88 19700 150000 334 136000 120000 133 43100
13 84100 86 19500 164000 283 125000 126000 134 45400
14 82800 84 18700 175000 210 98900 132000 140 50000
15 85300 82 18900 171000 229 106000 118000 137 43600
 
16 87800 80 19000 168000 241 110000 116000 126 39500
17 85200 77 17700 161000 192 83400 115000 125 38900
18 82800 75 16700 159000 198 84800 114000 137 42300
19 80700 76 16600 162000 171 75000 131000 146 51900
20 77200 83 17400 162000 176 76900 139000 201 75500
 
21 76000 96 19600 152000 180 73700 133000 244 88000
22 93100 198 53000 145000 160 62400 124000 234 78300
23 160000 425 187000 143000 148 57000 127000 248 85400
24 175000 479 227000 135000 118 43200 137000 212 78200
25 163000 591 258000 121000 103 33500 136000 179 65700
 
26 158000 598 254000 121000 125 40900 129000 189 65800
27 152000 509 209000 121000 119 38900 125000 170 57200
28 144000 436 169000 115000 110 34300 124000 142 47700
29 152000 302 123000 --- --- --- 122000 118 38700
30 157000 298 126000 --- --- --- 116000 111 35000
 
31 168000 384 174000 --- --- --- 116000 105 33000
 
APRIL MAY JUNE
1 108000 115 33500 280000 206 155000 271000 194 142000
2 109000 113 33300 286000 194 150000 271000 197 144000
3 111000 105 31500 294000 174 138000 270000 199 145000
4 113000 111 33900 296000 157 125000 262000 212 150000
5 111000 112 33500 289000 156 122000 255000 209 144000
 
6 116000 106 33600 271000 190 139000 254000 208 143000
7 123000 120 40100 259000 252 176000 252000 210 143000
8 132000 141 50300 252000 251 170000 251000 225 152000
9 126000 184 62900 247000 204 136000 253000 250 171000
10 174000 336 162000 244000 213 140000 252000 255 173000
 
11 193000 476 248000 237000 188 120000 249000 262 176000
12 193000 353 184000 231000 165 103000 246000 284 188000
13 204000 363 200000 226000 159 97100 243000 283 186000
14 207000 404 226000 225000 161 98000 242000 312 204000
15 214000 414 239000 222000 175 105000 242000 412 269000
 
16 226000 447 273000 221000 187 111000 243000 497 327000
17 239000 456 295000 225000 176 107000 244000 398 263000
18 236000 378 241000 232000 245 154000 245000 364 241000
19 246000 322 214000 238000 328 210000 244000 314 207000
20 254000 298 204000 244000 308 202000 242000 293 191000
 
21 254000 270 185000 246000 266 177000 240000 262 170000
22 256000 237 164000 248000 250 168000 237000 243 156000
23 261000 239 169000 255000 269 185000 232000 235 147000
24 265000 226 162000 258000 294 205000 227000 209 128000
25 260000 247 174000 258000 205 142000 223000 204 123000
 
26 259000 319 223000 259000 198 138000 218000 200 118000
27 261000 312 220000 262000 225 159000 213000 183 105000
28 260000 263 185000 264000 211 150000 205000 176 97600
29 264000 219 156000 267000 225 162000 200000 156 84300
30 272000 200 147000 271000 202 148000 197000 159 84800
 
31 --- --- --- 272000 193 142000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 203000 205 113000 205000 192 106000 89700 94 22800
2 199000 401 216000 212000 191 109000 88500 85 20400
3 187000 348 176000 208000 171 95900 84300 84 19100
4 185000 206 103000 197000 170 90200 77800 85 17800
5 177000 167 79700 180000 160 77400 72400 85 16600
 
6 179000 160 77300 160000 138 59700 71900 82 15800
7 183000 164 81000 147000 137 54100 65500 72 12700
8 182000 148 72600 142000 133 50600 73000 68 13200
9 181000 146 71200 137000 128 47400 69500 76 14300
10 180000 162 78700 125000 118 39600 61700 71 11900
 
11 172000 163 75400 114000 118 36000 58800 70 11200
12 164000 162 71400 111000 137 40800 53000 71 10200
13 154000 158 65600 101000 164 44800 59500 71 11400
14 147000 146 57800 103000 163 45200 57100 71 11000
15 135000 138 50400 98700 136 36300 62300 70 11800
 
16 127000 135 46400 98300 112 29600 58000 73 11400
17 121000 134 43800 96700 126 32800 62400 80 13600
18 118000 133 42300 95100 118 30300 60600 73 12000
19 122000 138 45400 88600 116 27700 64300 80 13800
20 120000 138 44400 80400 109 23700 50500 93 12800
 
21 126000 135 46000 84400 88 20200 62100 93 15500
22 129000 132 46000 83900 110 25000 51200 93 12900
23 128000 129 44500 86100 122 28300 52900 91 13100
24 121000 138 45100 88000 109 25900 54200 78 11400
25 130000 156 54900 91300 91 22500 54000 80 11600
 
26 143000 146 56500 92400 103 25700 52300 92 13000
27 154000 132 54600 94000 101 25500 54700 81 12000
28 167000 127 57200 94200 95 24300 56800 94 14900
29 179000 148 71700 96300 82 21400 65300 98 17100
30 189000 171 87100 95000 80 20400 77400 80 16800
 
31 195000 182 96300 93100 78 19700 --- --- ---


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data