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. 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: Extremes 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.
 

REMARKS FOR CURRENT YEAR.-- Records good.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 81100  72000  127000  133000  97900  143000  326000  227000  484000  383000  204000  322000 
2 79300  70000  124000  134000  98700  136000  336000  247000  469000  369000  201000  302000 
3 79100  70700  122000  141000  101000  132000  339000  252000  463000  354000  189000  262000 
4 74400  71500  112000  142000  103000  146000  333000  256000  475000  338000  174000  238000 
5 72100  74700  108000  156000  98300  177000  320000  254000  490000  320000  167000  216000 
 
6 72000  84400  108000  183000  94100  240000  308000  243000  491000  306000  169000  191000 
7 71000  99400  101000  193000  92500  343000  299000  226000  483000  294000  179000  168000 
8 69200  113000  93000  179000  93200  421000  294000  210000  469000  272000  196000  153000 
9 67100  120000  88800  159000  93600  457000  292000  193000  457000  267000  193000  143000 
10 67000  119000  89600  144000  91000  449000  287000  181000  443000  269000  179000  133000 
 
11 73000  115000  98200  136000  88300  422000  278000  168000  433000  267000  170000  128000 
12 80800  112000  141000  132000  88300  384000  266000  158000  424000  262000  155000  126000 
13 76500  108000  188000  128000  89900  336000  250000  147000  411000  259000  147000  121000 
14 71700  106000  195000  123000  93600  305000  232000  148000  399000  258000  141000  116000 
15 69100  100000  186000  120000  95900  286000  217000  170000  396000  262000  134000  112000 
 
16 69400  93300  166000  116000  96000  263000  202000  186000  395000  274000  125000  110000 
17 71800  88500  150000  115000  92600  242000  182000  187000  405000  283000  115000  113000 
18 76000  91000  142000  121000  90200  234000  167000  185000  425000  277000  111000  119000 
19 84300  145000  140000  131000  86200  225000  161000  184000  449000  261000  111000  126000 
20 85700  186000  143000  134000  84200  216000  157000  191000  459000  246000  110000  129000 
 
21 80400  187000  141000  139000  84500  216000  152000  219000  456000  243000  107000  131000 
22 72200  181000  131000  139000  90800  213000  152000  250000  450000  244000  110000  128000 
23 70200  172000  124000  138000  103000  208000  157000  275000  442000  238000  117000  126000 
24 73500  167000  125000  135000  114000  196000  160000  296000  433000  226000  118000  135000 
25 75000  163000  139000  127000  126000  188000  177000  287000  429000  219000  113000  152000 
 
26 76500  151000  158000  121000  132000  183000  184000  292000  425000  213000  105000  161000 
27 77000  141000  158000  120000  140000  193000  189000  336000  420000  205000  127000  162000 
28 77500  142000  144000  117000  153000  240000  198000  400000  413000  197000  183000  157000 
29 76200  142000  136000  111000  150000  307000  198000  464000  405000  192000  262000  152000 
30 73400  137000  141000  102000  ---  328000  209000  495000  394000  194000  327000  146000 
 
31 73000  ---  139000  97000  ---  320000  ---  500000  ---  205000  326000  --- 

MEAN 74690 120800 134100 134400 102100 262900 234100 252500 439600 264400 163400 159300
MAX 85700 187000 195000 193000 153000 457000 339000 500000 491000 383000 327000 322000
MIN 67000 70000 88800 97000 84200 132000 152000 147000 394000 192000 105000 110000
IN. 0.12 0.19 0.22 0.22 0.15 0.43 0.37 0.41 0.69 0.43 0.26 0.25


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1933 - 2004, BY WATER YEAR (WY)
MEAN 148600 156100 141300 133800 162600 250700 325700 325000 291600 239400 156400 142500
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 2003 CALENDAR YEAR FOR 2004 WATER YEAR WATER YEARS 1933 - 2004
ANNUAL MEAN 146000      195200      206600     
HIGHEST ANNUAL MEAN 446000      1993
LOWEST ANNUAL MEAN 71730      1934
HIGHEST DAILY MEAN 473000          May 13 500000          May 31 978000      Aug 7 1993
LOWEST DAILY MEAN 62500          Jan 17 67000          Oct 10 24700      Jan 21 1940
ANNUAL SEVEN-DAY MINIMUM 65000          Jan 23 70200          Oct 5 26700      Jan 20 1940
MAXIMUM PEAK FLOW 504000          May 31 996000      Aug 7 1993
MAXIMUM PEAK STAGE 33.27     May 31 45.91 May 23 1995
INSTANTANEOUS LOW FLOW 66500          Oct 10 23400      Dec 13 1937
ANNUAL RUNOFF (INCHES) 2.78 3.73 3.94
10 PERCENT EXCEEDS 255000      395000      403000     
50 PERCENT EXCEEDS 122000      158000      166000     
90 PERCENT EXCEEDS 71100      84400      76000     



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data