Station list     Available data
ILLINOIS RIVER BASIN


05576500       SANGAMON RIVER AT RIVERTON, IL

 

LOCATION.-- Lat 39°50'35", long 89°32'50" (NAD of 1927), in NW1/4NE1/4 sec.16, T.16 N., R.4 W., Sangamon County, Hydrologic Unit 07130008, at right abutment on former U.S. Highway 36 bridge in Riverton, 2.2 mi downstream from Sugar Creek, 5.6 mi upstream from Fancy Creek, and at mile 83.1.

 

DRAINAGE AREA.-- 2,618 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: February 1908 to December 1912, August 1914 to October 1956, and January 1986 to current year.

 

STAGE: Water years 1994-2002.

 

PARTIAL RECORD: Annual maximum, water years 1957-85.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1978-91.

 

MISCELLANEOUS: Water years 1998 and 2002.

 

REVISED RECORDS.-- WSP 1208: 1908-9, 1921-22, 1926-27, 1947. WDR IL-75-1: Drainage area.

 

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 508.38 ft above NGVD of 1929. Prior to Aug. 14, 1934, chain gage on old Wabash Railway bridge (currently Norfolk and Western Railway bridge), 1,450 ft downstream, at datum 5.61 ft lower.

 

REMARKS.-- Some regulation by municipal reservoirs at Decatur (since 1922) and at Springfield (since 1934).

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 68,700 ft3/s, May 19, 1943, gage height, 31.52 ft, from graph based on gage readings; minimum daily, 3.0 ft3/s, Oct. 3-15, 1914.

 

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: The high water of 1883 reached a stage of approximately 32 ft with respect to the gage at the old Wabash Railway bridge. The high water of 1875 is said to have been about one-half foot lower.

 

REMARKS FOR CURRENT YEAR.-- Records good except those for April 28 to June 27 and those for estimated daily discharges, which are poor.

DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
193 2210 1880 e1300 7190 3550 5610 13200 3940 1600 220 390 
296 1780 1910 e1350 8540 3280 5610 12200 3830 1370 203 345 
391 988 1890 e1500 9450 4830 4870 11900 3450 1100 191 318 
485 761 1870 e1500 9410 5570 4370 11200 2820 1040 182 271 
5104 666 1730 1350 8960 5120 3680 9950 2380 985 174 223 
 
6112 604 1630 1230 8520 4890 2950 9360 2500 947 198 190 
7130 567 1570 1170 7880 4930 2460 10800 2500 906 235 171 
8106 526 1290 1180 6850 5200 2830 14600 2390 806 159 159 
999 508 990 1250 5010 4830 3690 17600 2300 710 149 151 
10106 483 883 1150 4130 5190 3740 19600 2230 612 145 151 
 
11111 468 857 1030 3450 5560 3650 21400 2520 579 147 147 
12207 441 962 1030 2760 5630 3610 27400 6070 628 142 126 
13740 400 1200 1070 2240 5360 3590 45300 10700 554 144 117 
141120 342 1510 1070 2810 5500 3260 47900 17900 516 195 112 
151150 317 2180 1040 2950 5140 3000 38700 17500 486 173 119 
 
161150 317 2720 965 2480 4540 2780 31700 16000 454 379 120 
171380 517 3620 923 1890 4190 2410 25800 13700 422 635 113 
181240 371 5290 841 2170 3560 2330 21200 11000 426 376 116 
191040 308 6130 813 2780 2910 2390 16800 8990 383 554 146 
201240 290 6220 808 3870 2790 3450 12500 7540 358 440 233 
 
211520 274 6160 806 4890 2950 6150 10300 5880 337 339 431 
221050 373 5530 788 5640 2940 9360 8940 3740 319 256 398 
23623 418 5000 780 6030 2740 11400 7560 2830 307 523 238 
24682 545 4120 805 6210 2210 10500 6380 2460 296 934 153 
252550 626 3290 795 6280 2240 10500 5190 2060 270 707 136 
 
263030 591 3000 822 6140 2940 11100 4220 1900 271 1460 108 
272570 545 2750 799 5620 3540 11700 3740 2270 1150 1620 98 
282220 537 2480 787 4440 3780 15500 4520 2230 986 1730 95 
291670 565 2190 783 --- 4090 17800 4790 2070 398 1520 92 
301130 1070 1910 863 --- 4610 15700 4560 1810 286 1030 99 
 
311510 --- e1500 3750 --- 5270 --- 4330 --- 245 619 --- 

TOTAL2895518408842623434814859012988018999048364016751019747157795566
MEAN934.0613.627181108530741906333156005584637.0509.0185.5
MAX30302210622037509450563017800479001790016001730431
MIN852748577801890221023303740181024514292
CFSM0.360.231.040.422.031.602.425.962.130.240.190.07
IN.0.410.261.200.492.111.852.706.872.380.280.220.08

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2002, BY WATER YEAR (WY)
MEAN860.7941.611461841236928103299331324041103520.0567.2
MAX12280551675001294077628117141001676085964819591412730
(WY)192719421928195019511939192219431998195119151926
MIN7.2912.627.529.534.650.818011314649.140.722.3
(WY)191519151915191819311954193119541934195419361922

SUMMARY STATISTICSFOR 2001 CALENDAR YEARFOR 2002 WATER YEARWATER YEARS 1908 - 2002
ANNUAL TOTAL700689     1326675     
ANNUAL MEAN1920     3635     1757         
HIGHEST ANNUAL MEAN4808         1927
LOWEST ANNUAL MEAN114         1954
HIGHEST DAILY MEAN20800         Jun 847900         May 1467700         May 19 1943
LOWEST DAILY MEAN85         Oct 485         Oct 43.0      A
ANNUAL SEVEN-DAY MINIMUM92         Sep 28102         Oct 13.0      Oct 3 1914
MAXIMUM PEAK FLOW51800         May 1468700         May 19 1943
MAXIMUM PEAK STAGE30.07    May 1431.52 BMay 19 1943
INSTANTANEOUS LOW FLOW81         Oct 4,5
ANNUAL RUNOFF (CFSM)0.731.390.67    
ANNUAL RUNOFF (INCHES)9.9618.859.12    
10 PERCENT EXCEEDS5250     9380     4660         
50 PERCENT EXCEEDS891     1600     660         
90 PERCENT EXCEEDS106     166     60         

A - Oct. 3-15, 1914.

B - From graph based on gage readings.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data