Station list     Available data
LOWER MISSISSIPPI RIVER BASIN


07022000                   MISSISSIPPI RIVER AT THEBES, IL



LOCATION.--Lat 37°13'00", long 89°27'50", 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.--
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".
GAGE HEIGHT: 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.

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. Datum of gage is 300.00 ft above sea level. 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.--No estimated daily discharge. Water-discharge records good. Natural flow of stream affected by many reservoirs and navigation dams in upper the Mississippi River Basin and by many reservoirs and diversions for irrigation in the Missouri River Basin. U.S. Army Corps of Engineers satellite telemeter and telemark at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--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.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1151000 211000 210000 115000 331000 214000 188000 535000 483000 334000 256000 159000 
2149000 208000 202000 115000 363000 208000 183000 546000 483000 359000 260000 155000 
3152000 212000 194000 119000 386000 202000 183000 557000 480000 394000 264000 150000 
4160000 253000 209000 113000 379000 206000 228000 562000 473000 420000 262000 147000 
5171000 328000 222000 111000 353000 212000 238000 558000 473000 418000 256000 145000 
 
6175000 378000 218000 112000 337000 220000 229000 549000 475000 405000 246000 142000 
7214000 395000 210000 114000 354000 226000 226000 552000 475000 383000 236000 141000 
8348000 385000 205000 121000 409000 227000 230000 568000 473000 360000 230000 137000 
9404000 361000 227000 120000 444000 228000 235000 588000 465000 341000 230000 130000 
10413000 333000 262000 112000 456000 250000 250000 595000 455000 324000 228000 131000 
 
11399000 320000 274000 108000 438000 294000 289000 588000 440000 316000 222000 131000 
12372000 338000 253000 109000 410000 323000 307000 561000 428000 314000 214000 125000 
13334000 359000 237000 112000 379000 319000 299000 525000 417000 309000 215000 123000 
14292000 366000 225000 119000 358000 303000 293000 491000 414000 300000 225000 120000 
15257000 360000 213000 121000 348000 291000 307000 449000 408000 293000 218000 119000 
 
16231000 342000 204000 121000 337000 275000 314000 433000 404000 287000 203000 120000 
17217000 319000 193000 129000 319000 267000 331000 432000 406000 275000 192000 121000 
18212000 299000 188000 146000 300000 259000 384000 438000 409000 266000 183000 122000 
19219000 286000 184000 163000 290000 253000 434000 443000 407000 259000 179000 123000 
20266000 279000 181000 170000 285000 255000 469000 449000 403000 257000 172000 122000 
 
21326000 270000 181000 176000 283000 264000 488000 462000 394000 251000 165000 124000 
22356000 259000 182000 206000 271000 258000 497000 477000 384000 246000 155000 120000 
23358000 247000 175000 216000 254000 241000 502000 488000 378000 243000 153000 120000 
24334000 243000 168000 272000 240000 232000 495000 491000 388000 239000 152000 119000 
25303000 235000 166000 326000 236000 237000 481000 488000 386000 233000 155000 117000 
 
26275000 230000 158000 336000 227000 243000 473000 489000 369000 230000 159000 116000 
27251000 230000 140000 323000 217000 238000 482000 494000 361000 233000 161000 114000 
28229000 224000 129000 311000 213000 227000 496000 500000 358000 238000 163000 112000 
29220000 221000 131000 295000 --- 220000 512000 499000 345000 242000 163000 113000 
30213000 216000 128000 288000 --- 212000 527000 498000 334000 248000 165000 119000 
 
31211000 --- 124000 299000 --- 198000 --- 493000 --- 253000 165000 --- 

MEAN264900290200193300177400329200245200352300509600418900299000201500127900
MAX413000395000274000336000456000323000527000595000483000420000264000159000
MIN149000208000124000108000213000198000183000432000334000230000152000112000
IN..43.45.31.29.48.40.55.82.66.48.33.20


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1933 - 1999, BY WATER YEAR (WY)
MEAN151300159100143000136400164200253500333500322200286600239600157700144000
MAX589600389000531700333300350400542000731000655800584100765500768000539300
(WY)198719861983197319741985197319731947199319931993
MIN4550050080538503365046920802601156008817072350732904500059890
(WY)194019401956194019401934193419341934193619361937

SUMMARY STATISTICSFOR 1998 CALENDAR YEARFOR 1999 WATER YEARWATER YEARS 1933 - 1999
ANNUAL MEAN296500     283600     208100     
HIGHEST ANNUAL MEAN446000     1993
LOWEST ANNUAL MEAN71730     1934
HIGHEST DAILY MEAN620000         Apr 19595000         May 10978000     Aug 7 1993
LOWEST DAILY MEAN107000         Sep 15108000         Jan 1124700     Jan 21 1940
ANNUAL SEVEN-DAY MINIMUM114000         Sep 11114000         Jan 626700     Jan 20 1940
INSTANTANEOUS PEAK FLOW600000         May 10996000     Aug 7 1993
INSTANTANEOUS PEAK STAGE37.03    May 1045.91May 23 1995
INSTANTANEOUS LOW FLOW107000         Jan 1123400     Dec 13 1937
ANNUAL RUNOFF (INCHES)5.645.403.96
10 PERCENT EXCEEDS484000     476000     405000     
50 PERCENT EXCEEDS270000     254000     168000     
90 PERCENT EXCEEDS155000     127000     74900     


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data