Station list     Available data
LOWER MISSISSIPPI RIVER BASIN


07022000       MISSISSIPPI RIVER AT THEBES, IL

 
(National Stream-Quality Accounting Network Station)
 

LOCATION.-- Lat 37°13'00", long 89°27'50" (NAD of 1927), in NW 1/4 sec.17, T.15 S., R.3 W., Alexander County, Hydrologic Unit 07140105, near center span on downstream side of railroad bridge at Thebes, 5.0 mi downstream from Headwater Diversion Channel, and at mile 43.7 above Ohio River.
 

DRAINAGE AREA.-- 713,200 mi2, approximately.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1932 to current year. Monthly discharge only for some periods, published in WSP 1311. Prior to April 1941, published as "at Cape Girardeau, Mo".
 

STAGE: March 1933 to February 1938 and October 1939 to current year in reports of the U.S. Geological Survey. Prior to April 1941, published as "at Cape Girardeau, Mo". Since November 1878, under name of "at Grays Point" in files of the U.S. Army Corps of Engineers; January 1879 to May of 1896, published as "at Grays Point"; since May 1896, published as "at Cape Girardeau" in reports of the Mississippi River Commission February 1891 to February 1894; and since 1904, published as "at Cape Girardeau" in reports of the National Weather Service.

SURFACE-WATER QUALITY
 

CHEMICAL: January 1973 to current year.
 

SEDIMENT: October 1980 to current year.
 

SPECIFIC CONDUCTANCE: October 1974 to September 1981.
 

WATER TEMPERATURE: October 1974 to September 1981.
 

REVISED RECORDS.-- WSP 1341: 1844(M). WDR MO-76-1: Drainage area, WDR MO-98-1: Extreme outside period of record.
 

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and telemark. Datum of gage is 300.00 ft above NGVD of 1929. Mar. 17, 1933, to Dec. 21 1934, nonrecording gage; Dec. 22, 1934, to Apr. 4, 1941, water-stage recorder, at site 8.2 mi upstream at datum 4.65 ft higher; Apr. 5, 1941, to Sept. 30, 1941, nonrecording gage at present site and datum; Oct. 1, 1941, to Oct. 11, 1943, at datum 0.07 ft higher. Prior to Apr. 5, 1941, various auxiliary gages used. Since Oct. 1, 1943, former gage at Cape Girardeau used as auxiliary gage.
 

REMARKS.-- Natural flow of stream affected by many reservoirs and navigation dams in the upper Mississippi River Basin and by many reservoirs and diversions for irrigation in the Missouri River Basin. NASQAN station January 1973 to September 1986. Illinois Environmental Protection Agency station October 1986 to September 1994 (during the period, samples were analyzed by the Illinois EPA). Re-established as a NASQAN station October 1994 to current year.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 996,000 ft3/s, August 7, 1993; maximum gage height, 45.91 ft, May 23, 1995; minimum discharge, 23,400 ft3/s, December 13, 1937.

SPECIFIC CONDUCTANCE: Maximum daily, 705 microsiemens per centimeter, Aug. 5-7, 1980; minimum daily, 272 microsiemens per centimeter, Apr. 6, 1979.

WATER TEMPERATURE: Maximum daily, 31.5 °C, July 10 and 11, 1975, and July 17, 1977; minimum daily, 0.0 °C, on several days during winter periods.

SUSPENDED-SEDIMENT CONCENTRATONS: Maximum daily mean, 3,890 mg/L, Dec. 22, 1985; minimum daily mean, 13 mg/L, Jan. 28, 1981.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 6,280,000 tons, Mar. 1, 1985; minimum daily, 2,530 tons, Jan. 28, 1981.
 

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of July 4, 1844, reached an elevation of 345.14 ft, present datum, at Grays Point, from floodmarks, discharge, 1,075,000 ft3/s, computed by the U.S. Army Corps of Engineers.
 

EXTREMES FOR CURRENT YEAR.--

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 987 mg/L, May 11; minimum daily mean, 72 mg/L, Jan. 29 and 30.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 1,610,000 tons, May 11; minimum daily, 20,100 tons, Jan. 29.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
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 136000 188 69000 146000 125 49300 157000 171 72300
2 131000 223 78900 143000 131 50600 163000 121 53300
3 125000 243 81700 138000 141 52400 163000 101 44400
4 116000 223 70100 136000 139 50800 164000 108 48000
5 106000 204 58600 137000 137 50500 164000 105 46400
 
6 102000 196 54100 137000 141 52200 163000 96 42300
7 105000 174 49100 139000 125 46900 157000 93 39600
8 105000 157 44500 137000 122 45100 148000 97 38900
9 108000 140 41000 131000 127 44900 140000 105 39400
10 112000 133 40400 125000 127 42900 134000 108 39000
 
11 118000 149 47400 126000 123 41800 132000 109 38900
12 118000 174 55500 127000 116 39700 135000 98 35700
13 124000 180 60200 124000 121 40400 143000 96 36900
14 141000 211 80400 121000 111 36200 155000 95 39900
15 145000 217 84800 118000 98 31200 164000 105 46500
 
16 145000 170 66800 114000 89 27400 175000 148 70700
17 144000 150 58200 112000 90 27100 227000 307 189000
18 142000 130 49900 111000 97 29100 262000 381 269000
19 144000 122 47400 108000 104 30200 261000 354 250000
20 148000 106 42500 106000 105 30100 247000 310 207000
 
21 152000 119 48800 105000 98 27700 232000 293 183000
22 156000 129 54500 104000 98 27700 212000 260 149000
23 148000 126 50400 104000 94 26400 202000 252 137000
24 141000 143 54700 101000 93 25500 199000 --- e128000
25 156000 166 70000 101000 111 30600 187000 --- e108000
 
26 175000 163 77100 115000 145 45100 167000 --- e84900
27 180000 180 87800 124000 158 52800 152000 --- e70600
28 168000 168 76400 122000 156 51400 145000 --- e66600
29 159000 156 67000 127000 143 48700 131000 --- e51700
30 158000 150 64200 140000 140 53200 114000 --- e37400
 
31 151000 131 53400 --- --- --- 103000 --- e29800
 
JANUARY FEBRUARY MARCH
1 99600 --- e26600 173000 363 173000 157000 162 68900
2 104000 --- e29100 272000 426 314000 159000 154 66100
3 101000 --- e26400 313000 497 419000 164000 156 69200
4 96200 --- e23300 293000 549 435000 168000 204 92700
5 94000 91 23100 257000 479 333000 168000 188 85500
 
6 94200 97 24800 222000 403 242000 159000 145 62300
7 97700 90 23700 200000 321 174000 143000 141 54400
8 99500 80 21500 183000 240 119000 136000 141 51600
9 98500 82 21900 169000 184 84300 152000 216 91800
10 101000 86 23300 160000 159 68500 192000 561 291000
 
11 107000 92 26700 156000 141 59100 198000 467 250000
12 108000 92 26700 154000 129 53600 207000 360 200000
13 106000 90 25800 149000 145 58700 212000 280 160000
14 108000 92 26700 147000 127 50600 205000 274 151000
15 108000 86 25000 147000 129 51000 197000 281 149000
 
16 109000 82 24200 149000 114 45900 205000 336 186000
17 105000 94 26800 148000 122 48700 209000 300 170000
18 103000 83 23100 142000 131 50100 207000 294 164000
19 103000 78 21500 137000 134 49600 209000 270 152000
20 99500 79 21300 146000 141 55600 230000 249 154000
 
21 99500 76 20300 147000 126 50000 231000 228 142000
22 97900 80 21100 140000 143 54100 222000 200 120000
23 95800 87 22500 140000 140 52900 220000 189 112000
24 103000 117 32600 151000 122 49700 213000 171 98400
25 104000 125 35300 160000 130 56500 213000 166 95500
 
26 108000 99 28600 170000 145 66500 247000 210 140000
27 105000 86 24400 173000 145 67600 242000 228 149000
28 103000 73 20500 164000 159 70200 226000 186 114000
29 103000 72 20100 --- --- --- 220000 172 102000
30 106000 72 20600 --- --- --- 223000 178 107000
 
31 117000 88 28500 --- --- --- 220000 174 103000
 
APRIL MAY JUNE
1 206000 178 99000 439000 639 758000 445000 369 444000
2 192000 171 88900 454000 681 835000 406000 337 370000
3 180000 144 70300 454000 682 835000 375000 308 312000
4 181000 131 63800 441000 587 700000 360000 263 256000
5 182000 126 61600 427000 490 565000 351000 247 235000
 
6 182000 129 63300 410000 376 416000 339000 224 204000
7 181000 125 61200 401000 333 360000 327000 220 194000
8 183000 133 65500 441000 405 487000 330000 202 180000
9 193000 169 87800 508000 686 944000 342000 222 205000
10 201000 170 92200 564000 891 1360000 353000 236 225000
 
11 221000 180 108000 606000 987 1610000 363000 253 248000
12 239000 231 149000 640000 766 1320000 378000 302 309000
13 243000 240 158000 704000 675 1280000 402000 447 486000
14 247000 276 184000 749000 601 1210000 420000 550 623000
15 245000 271 179000 757000 546 1120000 441000 570 679000
 
16 234000 228 144000 771000 588 1220000 453000 641 785000
17 224000 203 123000 814000 562 1240000 453000 661 808000
18 225000 183 111000 828000 534 1190000 444000 582 698000
19 228000 194 119000 807000 490 1070000 427000 431 497000
20 233000 214 134000 775000 407 852000 405000 368 402000
 
21 248000 214 143000 738000 357 712000 378000 329 336000
22 275000 243 181000 692000 318 594000 347000 276 259000
23 318000 366 315000 649000 299 525000 320000 258 223000
24 340000 457 421000 606000 269 440000 301000 264 214000
25 344000 473 440000 559000 274 413000 287000 248 191000
 
26 353000 478 456000 520000 266 373000 280000 216 161000
27 352000 472 449000 494000 267 356000 271000 197 144000
28 356000 509 490000 482000 266 347000 262000 172 122000
29 373000 586 591000 487000 287 378000 255000 155 106000
30 408000 600 661000 486000 372 488000 249000 145 97600
 
31 --- --- --- 472000 403 513000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 246000 138 91900 149000 85 33900 186000 127 63900
2 240000 141 91100 147000 81 32000 179000 111 53500
3 232000 145 90800 143000 85 32600 170000 103 47000
4 227000 129 78800 136000 89 32700 162000 110 48100
5 222000 127 76200 130000 101 35400 153000 110 45600
 
6 219000 134 79400 128000 111 38200 144000 116 45000
7 214000 133 76900 125000 118 39800 134000 121 43700
8 209000 129 72600 125000 149 50100 127000 131 44900
9 204000 129 71000 125000 159 53500 124000 131 43700
10 198000 128 68700 123000 128 42500 122000 110 36400
 
11 196000 136 72100 118000 108 34400 123000 101 33300
12 193000 142 73800 120000 103 33200 121000 96 31300
13 194000 125 65600 122000 127 41800 121000 94 30600
14 196000 121 63900 125000 150 50900 125000 111 37400
15 194000 111 57600 128000 117 40300 126000 120 40700
 
16 186000 104 52100 133000 102 36400 126000 96 32800
17 177000 99 47500 135000 109 39900 126000 104 35300
18 165000 105 46600 136000 113 41500 126000 123 41700
19 159000 101 43400 139000 118 44000 127000 121 41600
20 157000 95 40200 136000 107 39000 126000 116 39400
 
21 153000 97 40200 144000 128 49400 131000 106 37400
22 155000 90 37600 156000 91 38200 131000 105 37100
23 161000 85 37000 158000 104 44200 123000 122 40500
24 160000 84 36400 157000 110 46600 116000 94 29400
25 159000 89 38500 171000 117 54100 115000 102 31400
 
26 157000 83 35100 206000 156 86800 114000 82 25300
27 155000 75 31300 218000 174 103000 110000 83 24600
28 150000 78 31700 213000 185 107000 104000 90 25500
29 147000 78 30900 205000 187 103000 98800 91 24400
30 144000 92 35700 195000 170 89400 96200 97 25200
 
31 144000 108 42000 189000 148 75500 --- --- ---
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data