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
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 151000  211000  210000  115000  331000  214000  188000  535000  483000  334000  256000  159000 
2 149000  208000  202000  115000  363000  208000  183000  546000  483000  359000  260000  155000 
3 152000  212000  194000  119000  386000  202000  183000  557000  480000  394000  264000  150000 
4 160000  253000  209000  113000  379000  206000  228000  562000  473000  420000  262000  147000 
5 171000  328000  222000  111000  353000  212000  238000  558000  473000  418000  256000  145000 
 
6 175000  378000  218000  112000  337000  220000  229000  549000  475000  405000  246000  142000 
7 214000  395000  210000  114000  354000  226000  226000  552000  475000  383000  236000  141000 
8 348000  385000  205000  121000  409000  227000  230000  568000  473000  360000  230000  137000 
9 404000  361000  227000  120000  444000  228000  235000  588000  465000  341000  230000  130000 
10 413000  333000  262000  112000  456000  250000  250000  595000  455000  324000  228000  131000 
 
11 399000  320000  274000  108000  438000  294000  289000  588000  440000  316000  222000  131000 
12 372000  338000  253000  109000  410000  323000  307000  561000  428000  314000  214000  125000 
13 334000  359000  237000  112000  379000  319000  299000  525000  417000  309000  215000  123000 
14 292000  366000  225000  119000  358000  303000  293000  491000  414000  300000  225000  120000 
15 257000  360000  213000  121000  348000  291000  307000  449000  408000  293000  218000  119000 
 
16 231000  342000  204000  121000  337000  275000  314000  433000  404000  287000  203000  120000 
17 217000  319000  193000  129000  319000  267000  331000  432000  406000  275000  192000  121000 
18 212000  299000  188000  146000  300000  259000  384000  438000  409000  266000  183000  122000 
19 219000  286000  184000  163000  290000  253000  434000  443000  407000  259000  179000  123000 
20 266000  279000  181000  170000  285000  255000  469000  449000  403000  257000  172000  122000 
 
21 326000  270000  181000  176000  283000  264000  488000  462000  394000  251000  165000  124000 
22 356000  259000  182000  206000  271000  258000  497000  477000  384000  246000  155000  120000 
23 358000  247000  175000  216000  254000  241000  502000  488000  378000  243000  153000  120000 
24 334000  243000  168000  272000  240000  232000  495000  491000  388000  239000  152000  119000 
25 303000  235000  166000  326000  236000  237000  481000  488000  386000  233000  155000  117000 
 
26 275000  230000  158000  336000  227000  243000  473000  489000  369000  230000  159000  116000 
27 251000  230000  140000  323000  217000  238000  482000  494000  361000  233000  161000  114000 
28 229000  224000  129000  311000  213000  227000  496000  500000  358000  238000  163000  112000 
29 220000  221000  131000  295000  ---  220000  512000  499000  345000  242000  163000  113000 
30 213000  216000  128000  288000  ---  212000  527000  498000  334000  248000  165000  119000 
 
31 211000  ---  124000  299000  ---  198000  ---  493000  ---  253000  165000  --- 

MEAN 264900 290200 193300 177400 329200 245200 352300 509600 418900 299000 201500 127900
MAX 413000 395000 274000 336000 456000 323000 527000 595000 483000 420000 264000 159000
MIN 149000 208000 124000 108000 213000 198000 183000 432000 334000 230000 152000 112000
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)
MEAN 151300 159100 143000 136400 164200 253500 333500 322200 286600 239600 157700 144000
MAX 589600 389000 531700 333300 350400 542000 731000 655800 584100 765500 768000 539300
(WY) 1987 1986 1983 1973 1974 1985 1973 1973 1947 1993 1993 1993
MIN 45500 50080 53850 33650 46920 80260 115600 88170 72350 73290 45000 59890
(WY) 1940 1940 1956 1940 1940 1934 1934 1934 1934 1936 1936 1937

SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1933 - 1999
ANNUAL MEAN 296500      283600      208100     
HIGHEST ANNUAL MEAN 446000      1993
LOWEST ANNUAL MEAN 71730      1934
HIGHEST DAILY MEAN 620000          Apr 19 595000          May 10 978000      Aug 7 1993
LOWEST DAILY MEAN 107000          Sep 15 108000          Jan 11 24700      Jan 21 1940
ANNUAL SEVEN-DAY MINIMUM 114000          Sep 11 114000          Jan 6 26700      Jan 20 1940
INSTANTANEOUS PEAK FLOW 600000          May 10 996000      Aug 7 1993
INSTANTANEOUS PEAK STAGE 37.03     May 10 45.91 May 23 1995
INSTANTANEOUS LOW FLOW 107000          Jan 11 23400      Dec 13 1937
ANNUAL RUNOFF (INCHES) 5.64 5.40 3.96
10 PERCENT EXCEEDS 484000      476000      405000     
50 PERCENT EXCEEDS 270000      254000      168000     
90 PERCENT EXCEEDS 155000      127000      74900     


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data