Station list     Available data
ILLINOIS RIVER BASIN


05568000       MACKINAW RIVER NEAR GREEN VALLEY, IL

 

LOCATION.-- Lat 40°27'15", long 89°36'22" (NAD of 1927), in SE1/4SE1/4 sec.12, T.23 N., R.5 W., Tazewell County, Hydrologic Unit 07130004, on right downstream side of bridge on Towerline Road, 2.5 mi east of State Highway 29, 3.9 mi northeast of Green Valley, 5.8 mi south of Pekin, 10.2 mi north of U.S. Highway 136, and at mile 17.3.
 

DRAINAGE AREA.-- 1,073 mi2. Area at site used prior to Oct. 1, 1988, 1,089 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: March 1921 to September 1956; June 1988 to current year.
 

STAGE: Water years 1994 to current year.
 

PARTIAL RECORD: Annual maximum, water years 1957-88.

SURFACE-WATER QUALITY
 

CHEMICAL: October 1997 to September 1998.
 

SEDIMENT: October 1994 to September 1997.
 

MISCELLANEOUS: Contaminants of streambed sediment, July 1997; contaminants of fish tissue, July 1997; streambank sediment size, October 1997; Streambed sediment size, October 1997; sediment concentration and particle size, water years 1996-98.

BIOLOGICAL
 

BENTHIC MACROINVERTEBRATES: Water year 1996 and 1997.
 

FISH: Water year 1997.
 

HABITAT: Water year 1996.
 

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and a crest-stage gage. Datum of gage is 477.10 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to Jan. 17, 1933, chain gage at site 3.5 mi downstream on railroad bridge at datum 2.00 ft higher. Jan. 17, 1933, to May 13, 1940, chain gage, and May 14, 1940 to Sept. 30, 1952, wire-weight gage at site 3.6 mi downstream at datum 2.00 ft higher. Oct. 1, 1952 to Oct. 31, 1956, wire-weight gage, and Nov. 1, 1956 to Sept. 30, 1988, crest-stage gage at site 3.6 mi down stream at present datum.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 51,000 ft3/s, Dec. 6, 1982, gage height, 16.13 ft (backwater from ice), site then in use; maximum recorded gage height, 28.29 ft, Sept. 16, 1993 (discharge unknown); minimum discharge observed, 17 ft3/s, Oct. 26, 27, 1940.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 6,160 mg/L, May 27, 1996; minimum daily, 4 mg/L, May 11, 1997.

SUSPENDED-SEDIMENT LOADS: Maximum daily 99,800 tons, May 27, 1996; minimum daily, 0.83 tons, Dec. 21, 1996.
 

REMARKS FOR CURRENT YEAR.-- Records good except those for May 11 to July 3, which are fair, and those for estimated daily discharges, which are poor.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 63  62  56  76  54  e37  180  258  456  558  255  318 
2 61  60  59  77  e62  e37  169  262  428  468  272  319 
3 60  60  55  87  e65  e36  163  275  416  383  266  246 
4 64  61  54  95  e66  e35  305  299  409  339  234  267 
5 69  68  58  93  e63  e33  561  614  388  306  214  218 
 
6 59  75  50  94  e61  e32  712  762  378  280  243  181 
7 56  66  59  93  e57  e34  850  903  401  267  219  155 
8 55  64  54  92  e51  e45  951  731  386  331  197  137 
9 54  65  48  89  e46  e100  1130  1130  373  781  177  124 
10 55  66  54  86  e43  e150  963  2600  363  7580  162  113 
 
11 54  66  52  50  e41  e260  801  4660  363  8520  150  105 
12 54  65  56  e53  e39  259  685  4040  354  7100  141  99 
13 52  65  55  e58  e39  260  595  2580  1000  4480  135  96 
14 52  65  54  e59  e38  310  520  1750  1490  2230  129  94 
15 52  65  54  e57  e38  287  469  1500  1240  1600  124  90 
 
16 51  64  52  e55  e41  249  438  1610  1100  1200  118  85 
17 51  64  53  e54  e43  205  428  1400  847  944  112  85 
18 53  62  69  e53  e45  188  405  1150  717  842  105  81 
19 59  60  121  e52  e45  185  376  1000  624  712  100  78 
20 60  59  93  e50  e44  219  348  910  618  744  95  73 
 
21 55  62  86  e49  e45  286  332  807  557  1060  92  73 
22 55  63  96  e48  e52  317  319  792  490  794  87  78 
23 53  63  97  e47  e58  348  299  745  447  649  82  76 
24 55  61  94  e47  e57  317  282  676  414  545  79  69 
25 60  61  82  e46  e52  273  292  635  389  479  76  66 
 
26 61  59  76  e45  e46  240  293  594  427  422  73  69 
27 57  59  73  e49  e41  218  280  542  380  371  66  77 
28 54  60  79  e51  e39  207  257  516  330  347  62  70 
29 58  62  83  48  ---  222  239  575  362  325  72  64 
30 68  60  85  48  ---  208  241  537  499  298  81  64 
 
31 63  ---  80  53  ---  199  ---  484  ---  274  76  --- 

TOTAL 1773 1892 2137 1954 1371 5796 13883 35337 16646 45229 4294 3670
MEAN 57.2 63.1 68.9 63.0 49.0 187 463 1140 555 1459 139 122
MAX 69 75 121 95 66 348 1130 4660 1490 8520 272 319
MIN 51 59 48 45 38 32 163 258 330 267 62 64
CFSM 0.05 0.06 0.06 0.06 0.05 0.17 0.43 1.06 0.52 1.36 0.13 0.11
IN. 0.06 0.07 0.07 0.07 0.05 0.20 0.48 1.23 0.58 1.57 0.15 0.13
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 2003, BY WATER YEAR (WY)
MEAN 288 399 444 675 976 1079 1322 1329 881 572 276 337
MAX 3525 3417 2425 3514 3066 3629 4996 5756 2704 3109 2404 6057
(WY) 1927 1927 1928 1993 1927 1993 1944 1943 1999 1951 1924 1993
MIN 19.8 21.8 26.3 29.6 34.1 49.3 68.8 79.9 53.2 37.1 28.6 23.7
(WY) 1941 1941 1941 1940 1931 1931 1931 1934 1934 1988 1988 1940

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1921 - 2003
ANNUAL TOTAL 354738      133982         
ANNUAL MEAN 972      367          718         
HIGHEST ANNUAL MEAN 2353          1993
LOWEST ANNUAL MEAN 98.4       1940
HIGHEST DAILY MEAN 13500          May 14 8520              Jul 11 23500          Apr 24 1944
LOWEST DAILY MEAN 48          Dec 9 32      A     Mar 6 17          B
ANNUAL SEVEN-DAY MINIMUM 52          Oct 12 35              Mar 1 18          Oct 21 1940
MAXIMUM PEAK FLOW 9180              Jul 10 51000      C Dec 6 1982
MAXIMUM PEAK STAGE 25.10         Jul 10 28.29 D Sep 16 1993
INSTANTANEOUS LOW FLOW  E 17      F B
ANNUAL RUNOFF (CFSM) 0.91 0.34     0.67    
ANNUAL RUNOFF (INCHES) 12.30 4.65     9.09    
10 PERCENT EXCEEDS 2350      785          1780         
50 PERCENT EXCEEDS 353      94          256         
90 PERCENT EXCEEDS 59      50          44         

A - Estimated due to backwater from ice.

B - Oct. 26-27, 1940.

C - Gage height, 16.13 ft., backwater from ice, site then in use.

D - Maximum recorded, discharge unknown.

E - Minimum unknown, probably occurred during period of ice effect Feb. 2 - Mar. 7.

F - Observed.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data