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, 811 mg/L, Jan. 9; minimum daily mean, 41 mg/L, Nov. 8.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 433,000 tons, Apr. 2; minimum daily, 5,150 tons, Nov. 15.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
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 45800 62 7640 70400 79 15000 64000 77 13300
2 52500 61 8680 62800 65 10900 63700 80 13800
3 48000 67 8690 58200 52 8200 60700 81 13300
4 48100 63 8130 65700 48 8550 50000 78 10500
5 50100 64 8700 78800 48 10200 43000 85 9750
 
6 51300 68 9460 70700 50 9530 49900 72 9790
7 48600 113 14900 65500 52 9170 55000 69 10200
8 46400 139 17400 65600 41 7230 57800 77 12100
9 42800 135 15600 59400 43 6880 60500 78 12700
10 41900 123 14000 60800 57 9340 54600 54 7890
 
11 52000 124 17500 63900 58 9970 55400 60 9050
12 50400 101 13800 63000 58 9790 57800 65 10200
13 51400 83 11600 60200 55 8870 57200 61 9370
14 41400 74 8220 50400 45 6220 55900 66 9980
15 49800 66 8830 46800 41 5150 58100 73 11500
 
16 68600 72 13500 43900 65 7760 58700 67 10600
17 73200 69 13700 53000 83 11900 58600 89 13900
18 71100 72 14000 50400 69 9320 60400 132 21600
19 72700 76 14900 47500 75 9610 54700 122 18100
20 71100 77 14800 50300 69 9340 56600 97 14800
 
21 70100 72 13500 46200 50 6130 65800 81 14500
22 73900 79 15900 44000 54 6490 57000 88 13500
23 76000 76 15700 42500 72 8180 53700 96 13900
24 78900 68 14500 48700 117 15400 59700 92 14800
25 74000 69 13700 42500 105 12100 54800 85 12700
 
26 74800 62 12600 36700 108 9750 53500 83 12000
27 65900 66 11800 43200 70 8180 59300 78 12400
28 64000 67 11500 48300 64 8360 59100 69 11000
29 62100 61 10200 57200 69 10700 52600 70 9770
30 69200 59 11000 67700 67 12300 49200 80 10600
 
31 72300 62 12200 --- --- --- 48800 89 11800
 
JANUARY FEBRUARY MARCH
1 55700 90 13500 84300 128 29200 209000 555 313000
2 50900 87 11800 85300 112 25800 198000 381 205000
3 51300 89 12300 82800 96 21400 191000 309 159000
4 79900 99 21700 93300 133 33500 189000 293 150000
5 99200 110 29500 95500 176 45200 186000 271 136000
 
6 111000 144 43500 95200 169 43400 185000 271 136000
7 124000 266 90300 92300 155 38600 183000 296 146000
8 156000 523 226000 93600 155 39100 186000 286 145000
9 184000 811 403000 92200 157 39300 215000 496 289000
10 165000 774 346000 91600 151 37300 225000 525 320000
 
11 130000 587 205000 94700 144 37100 229000 632 391000
12 98300 586 155000 117000 307 98300 229000 604 373000
13 65900 517 91600 133000 388 140000 222000 502 300000
14 78200 479 101000 132000 358 127000 211000 422 240000
15 66800 403 72600 115000 373 116000 192000 350 181000
 
16 71600 413 80400 111000 255 76300 171000 285 132000
17 73400 406 80200 114000 260 80000 161000 256 112000
18 79500 278 60100 122000 267 87900 205000 424 238000
19 76300 214 44000 123000 232 77000 221000 613 366000
20 85500 192 44400 123000 227 75300 216000 623 363000
 
21 80000 158 34300 126000 221 74900 211000 550 314000
22 77300 132 27500 128000 194 66700 207000 447 250000
23 82300 142 31700 132000 190 67700 202000 424 231000
24 85900 147 34000 140000 211 79600 202000 258 141000
25 84200 117 26700 139000 225 84100 208000 205 115000
 
26 87000 130 30500 139000 275 104000 216000 212 124000
27 82800 139 31000 164000 395 179000 217000 401 235000
28 85300 107 24700 202000 715 391000 216000 525 306000
29 81600 109 23900 --- --- --- 216000 547 319000
30 84300 142 32400 --- --- --- 215000 505 293000
 
31 89700 152 37000 --- --- --- 217000 480 281000
 
APRIL MAY JUNE
1 230000 643 400000 259000 203 142000 168000 190 86700
2 234000 684 433000 253000 199 136000 172000 185 85500
3 241000 518 337000 253000 221 151000 170000 183 84000
4 256000 424 293000 256000 233 161000 165000 166 73900
5 273000 347 257000 249000 223 150000 157000 157 66400
 
6 286000 302 233000 233000 229 144000 145000 144 56300
7 295000 319 255000 222000 225 135000 136000 141 51900
8 300000 335 272000 222000 260 155000 135000 151 55000
9 304000 330 271000 219000 244 145000 148000 197 78900
10 306000 319 264000 217000 209 122000 146000 237 93400
 
11 308000 299 249000 216000 206 120000 146000 307 122000
12 312000 241 203000 211000 213 121000 182000 493 244000
13 318000 158 136000 208000 242 136000 190000 452 232000
14 329000 157 140000 212000 264 152000 200000 434 235000
15 335000 165 149000 214000 277 160000 219000 487 289000
 
16 346000 196 183000 205000 277 153000 221000 502 300000
17 356000 198 190000 183000 291 143000 229000 493 306000
18 356000 194 186000 163000 260 114000 230000 465 288000
19 348000 156 147000 165000 219 97800 227000 478 293000
20 337000 174 158000 173000 231 108000 230000 412 256000
 
21 324000 217 190000 180000 232 113000 236000 363 232000
22 311000 218 183000 203000 231 127000 233000 448 281000
23 302000 239 195000 219000 289 170000 236000 388 248000
24 294000 219 174000 213000 309 178000 246000 264 175000
25 288000 210 163000 214000 295 170000 252000 203 138000
 
26 281000 225 171000 220000 293 174000 250000 218 147000
27 274000 245 181000 219000 333 197000 249000 207 140000
28 268000 282 204000 209000 275 155000 252000 216 147000
29 264000 254 181000 193000 221 115000 249000 232 156000
30 265000 207 148000 192000 206 107000 251000 311 211000
 
31 --- --- --- 176000 203 96000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 261000 368 260000 105000 194 54800 91700 102 25300
2 273000 343 253000 98100 208 55000 73600 106 21100
3 279000 268 202000 95400 189 48700 48000 115 14700
4 279000 228 172000 92300 135 33800 48300 154 20200
5 278000 241 181000 94700 123 31400 46500 139 17400
 
6 279000 242 182000 103000 132 36700 46900 113 14300
7 281000 216 164000 109000 118 34700 44400 91 10900
8 284000 191 146000 113000 111 33900 43200 89 10400
9 289000 210 164000 119000 126 40400 43600 127 15000
10 293000 231 183000 121000 121 39400 47400 116 14800
 
11 294000 241 191000 120000 132 42700 44300 88 10500
12 290000 233 182000 118000 143 45700 43300 102 11900
13 284000 213 163000 114000 141 43500 39300 172 18300
14 276000 212 158000 104000 116 32600 47300 202 25900
15 267000 215 155000 104000 107 30000 50300 198 26900
 
16 255000 225 155000 102000 117 32100 66200 209 37400
17 242000 271 176000 85900 113 26200 70800 183 35000
18 227000 318 194000 79800 120 25800 59500 148 23800
19 216000 298 174000 96400 145 37700 47200 120 15200
20 207000 237 132000 99100 103 27500 42800 107 12300
 
21 192000 252 131000 72600 95 18700 40900 137 14900
22 173000 181 84200 64200 102 17700 42500 149 17200
23 156000 171 72100 54300 99 14600 38800 149 15600
24 161000 174 75300 58700 110 17600 41800 130 14700
25 161000 166 71900 65800 127 22500 41100 147 16300
 
26 160000 207 89500 66400 97 17400 40800 146 16100
27 140000 295 111000 59200 85 13600 40100 150 16300
28 118000 296 93600 64200 92 16000 38600 183 19100
29 109000 297 87700 79600 103 22000 42300 145 16700
30 116000 265 83200 93100 118 29800 40700 104 11600
 
31 114000 224 68900 96900 102 26700 --- --- ---


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data