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.

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 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 156000  170000  153000  160000  155000  323000  438000  457000  282000  432000  348000  175000 
2 146000  175000  164000  150000  159000  323000  443000  468000  266000  424000  335000  183000 
3 141000  177000  167000  146000  161000  297000  472000  486000  261000  433000  313000  180000 
4 140000  175000  174000  144000  157000  279000  506000  493000  263000  451000  296000  164000 
5 139000  170000  187000  144000  153000  270000  531000  483000  279000  463000  271000  146000 
 
6 137000  169000  186000  161000  159000  265000  551000  469000  292000  458000  264000  137000 
7 138000  175000  180000  194000  177000  260000  565000  452000  310000  449000  265000  135000 
8 138000  175000  179000  230000  189000  255000  572000  424000  308000  450000  263000  134000 
9 136000  170000  180000  295000  185000  267000  569000  399000  293000  454000  254000  130000 
10 136000  167000  178000  345000  177000  302000  555000  383000  284000  452000  250000  123000 
 
11 136000  163000  177000  336000  172000  357000  535000  363000  296000  451000  251000  116000 
12 133000  161000  173000  291000  169000  396000  523000  363000  312000  449000  244000  115000 
13 135000  161000  167000  252000  199000  406000  523000  353000  329000  444000  239000  115000 
14 134000  160000  166000  220000  267000  393000  539000  345000  334000  437000  236000  111000 
15 136000  158000  165000  198000  285000  363000  547000  338000  350000  427000  228000  107000 
 
16 137000  156000  161000  187000  270000  332000  574000  333000  376000  415000  221000  110000 
17 140000  154000  157000  176000  260000  306000  593000  323000  389000  398000  217000  121000 
18 155000  152000  154000  171000  266000  316000  609000  308000  402000  374000  207000  191000 
19 165000  151000  155000  172000  267000  349000  620000  289000  422000  345000  192000  241000 
20 165000  152000  152000  167000  280000  406000  617000  271000  435000  311000  186000  221000 
 
21 165000  150000  145000  160000  281000  462000  603000  268000  445000  287000  192000  195000 
22 164000  151000  147000  158000  276000  500000  586000  275000  453000  272000  191000  177000 
23 164000  151000  151000  159000  270000  531000  563000  284000  467000  263000  180000  163000 
24 164000  148000  153000  160000  261000  541000  539000  296000  487000  255000  169000  152000 
25 164000  146000  156000  161000  256000  534000  515000  303000  503000  246000  157000  146000 
 
26 165000  144000  161000  161000  247000  516000  492000  301000  509000  243000  152000  147000 
27 163000  139000  168000  158000  249000  493000  476000  311000  506000  241000  153000  153000 
28 162000  133000  172000  154000  277000  475000  459000  326000  494000  239000  156000  157000 
29 159000  132000  176000  150000  ---  462000  445000  329000  472000  271000  156000  159000 
30 157000  141000  176000  151000  ---  448000  452000  316000  451000  316000  161000  157000 
 
31 162000  ---  172000  154000  ---  441000  ---  299000  ---  340000  167000  --- 

MEAN 149400 157500 166200 189200 222300 382800 533700 358300 375700 370600 223000 152000
MAX 165000 177000 187000 345000 285000 541000 620000 493000 509000 463000 348000 241000
MIN 133000 132000 145000 144000 153000 255000 438000 268000 261000 239000 152000 107000
IN. .24 .25 .27 .31 .32 .62 .84 .58 .59 .60 .36 .24


STATISTICS OF MONTHLY MEAN DATA FOR PERIOD OF RECORD, BY WATER YEAR (WY)
MEAN 149500 157000 142200 135700 161600 253700 333200 319300 284500 238700 157100 144300
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 1997 CALENDAR YEAR FOR 1998 WATER YEAR FOR PERIOD OF RECORD
ANNUAL MEAN 246300      273500      206900     
HIGHEST ANNUAL MEAN 446000      1993
LOWEST ANNUAL MEAN 71730      1934
HIGHEST DAILY MEAN 630000          Mar 3 620000          Apr 19 978000      Aug 7 1993
LOWEST DAILY MEAN 118000          Jan 19 107000          Sep 15 24700      Jan 21 1940
ANNUAL SEVEN-DAY MINIMUM 123000          Jan 14 114000          Sep 11 26700      Jan 20 1940
INSTANTANEOUS PEAK FLOW ---      624000          Apr 19 996000      Aug 7 1993
INSTANTANEOUS PEAK STAGE ---      38.77     Apr 20 45.91 May 23 1995
INSTANTANEOUS LOW FLOW ---      106000          Sep 15 23400      Dec 13 1937
ANNUAL RUNOFF (INCHES) 4.69 5.21 3.94
10 PERCENT EXCEEDS 434000      484000      402000     
50 PERCENT EXCEEDS 191000      243000      167000     
90 PERCENT EXCEEDS 140000      146000      74500     


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data