Station list     Available data
ILLINOIS RIVER BASIN


05577500       SPRING CREEK AT SPRINGFIELD, IL



LOCATION.-- Lat 39°48'55", long 89°41'55", in NW1/4NE1/4 sec.30, T.16 N., R.5 W., Sangamon County, Hydrologic Unit 07130008, on right bank at downstream side of bridge on State Highways 125 and 97 (Jefferson Street), 0.1 mi east of intersection of State Highway 4 (Veterans Parkway) and State Highways 125 and 97 (Jefferson Street), in Springfield, and at mile 8.2.

DRAINAGE AREA.-- 107 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: January to September 1948, December 1948 to current year.
 

STAGE: Water years 1994-2000.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 524.65 ft above sea level. Prior to Dec. 22, 1948, and Mar. 24, 1981, to Mar. 30, 1983, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 10,700 ft3/s, May 8, 1996, gage height, 16.23 ft; no flow for many days in most years.

REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 .44 2.3 3.4   1.5   e.80 11    4.0 1.5   1.3 45    14      e.01
2 .78 2.4 3.4   1.6   e1.2   7.2 5.2 1.6   2.0 39    14      e.01
3 17      2.2 6.3   3.1   e1.3   4.4 4.6 1.7   2.5 36    16      e.01
4 1.0   2.2 13      2.6   e1.5   4.4 4.7 1.9   4.4 34    5.5   e.01
5 .49 2.2 34      1.7   e2.0   4.9 4.8 2.1   6.7 141    15      e.01
 
6 .58 2.2 3.7   1.5   2.8   4.5 5.3 2.3   2.3 143    5.0   e.01
7 .82 2.2 1.9   1.4   3.1   5.1 8.6 2.4   3.6 57    3.5   e.01
8 32      2.2 1.8   1.4   3.1   5.5 5.0 2.3   3.6 41    17      e.01
9 18      2.2 3.9   1.8   3.2   5.5 4.1 4.9   3.8 34    6.6   e.01
10 .93 2.1 3.8   e1.5   4.6   5.7 4.1 1.8   3.4 31    4.2   e.01
 
11 .35 2.2 1.8   e1.2   3.9   9.4 4.4 1.0   24    95    2.0   .29
12 .28 2.4 1.5   e1.0   3.4   12    4.0 .93 15    168    .83 11     
13 .39 2.3 1.4   e.90 3.3   12    3.6 1.4   8.1 75    .33 .18
14 .60 2.2 1.2   e.88 3.3   9.6 3.5 1.4   6.0 48    .17 12     
15 .61 2.2 2.3   e.86 3.4   12    3.8 1.3   3.8 39    .09 1.3  
 
16 1.1   2.2 1.7   e.84 3.3   12    5.8 1.3   2.7 34    .04 .07
17 1.9   2.2 1.3   e.82 3.2   6.9 6.1 1.4   2.0 30    15      .01
18 1.5   2.3 1.2   e.80 40      6.4 4.2 2.1   1.5 31    8.9   e.01
19 1.4   2.6 e1.1   e.68 9.4   17    5.2 2.2   1.3 31    .84 e.01
20 1.4   2.7 e1.0   e.58 7.5   18    14    2.1   51    25    .18 .43
 
21 1.3   2.8 e.94 e.50 6.5   10    4.7 2.1   125    23    .06 .30
22 1.0   2.9 e.88 e.45 6.4   7.6 3.7 2.2   67    21    4.3   .08
23 .82 5.2 e.84 e.40 5.9   6.0 5.6 5.9   42    19    1.9   .46
24 .94 5.5 e.82 e.35 8.2   6.5 10    1.9   113    18    3.5   21     
25 1.1   4.1 e.80 e.30 7.1   5.7 2.9 1.5   183    17    .19 41     
 
26 1.3   3.5 e.90 e.25 8.4   9.5 2.5 4.4   312    15    .13 17     
27 1.7   3.5 e1.1   e.22 8.9   12    2.9 14      291    12    .05 9.4  
28 1.8   3.4 1.4   e.20 8.1   6.9 2.0 2.9   127    10    .01 2.7  
29 2.0   3.5 1.5   e.30 7.1   5.5 1.7 2.6   78    10    e.01 .90
30 2.0   3.4 1.6   e.45 ---      4.5 1.3 2.3   55    8.9 e.01 .41
 
31 2.1   ---    1.5   e.60 ---      3.9 ---    1.8   ---    9.6 e.01 ---     

TOTAL 97.63 83.3 101.98 30.68 170.90 251.6 142.3 79.23 1542.0 1340.5 139.35 118.65
MEAN 3.15 2.78 3.29 .99 5.89 8.12 4.74 2.56 51.4 43.2 4.50 3.96
MAX 32 5.5 34 3.1 40 18 14 14 312 168 17 41
MIN .28 2.1 .80 .20 .80 3.9 1.3 .93 1.3 8.9 .01 .01
CFSM .03 .03 .03 .01 .06 .08 .04 .02 .48 .40 .04 .04
IN. .03 .03 .04 .01 .06 .09 .05 .03 .54 .47 .05 .04

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2000, BY WATER YEAR (WY)
MEAN 22.0 29.1 55.1 57.4 82.9 110 129 124 94.1 43.4 26.6 20.8
MAX 244 225 523 282 281 374 605 617 418 358 292 296
(WY) 1960 1986 1983 1950 1975 1978 1957 1996 1990 1981 1981 1993
MIN .000 .000 .000 .000 .22 .23 .66 .052 8.05 1.38 .016 .000
(WY) 1954 1954 1954 1956 1954 1954 1954 1954 1953 1976 1953 1952

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1948 - 2000
ANNUAL TOTAL 19300.68 4098.12
ANNUAL MEAN 52.9   11.2   66.8  
HIGHEST ANNUAL MEAN 156      1993
LOWEST ANNUAL MEAN 2.15 1954
HIGHEST DAILY MEAN 461          Feb 8 312          Jun 26 5320      May 8 1996
LOWEST DAILY MEAN .01     A .01     B .00 C
ANNUAL SEVEN-DAY MINIMUM .01     Jul 9 .01     Aug 28 .00 Sep 1 1949
INSTANTANEOUS PEAK FLOW 451          Jun 26 10700      May 8 1996
INSTANTANEOUS PEAK STAGE 8.06     Jun 26 16.23 May 8 1996
ANNUAL RUNOFF (CFSM) .49 .10 .62
ANNUAL RUNOFF (INCHES) 6.71 1.42 8.48
10 PERCENT EXCEEDS 151      23      153     
50 PERCENT EXCEEDS 7.2   2.7   21     
90 PERCENT EXCEEDS .40 .32 .02
A - Several days; July 10-18, 22 and Aug. 6, estimated.
B - Several days; Aug. 29-31, Sept. 1-10, 18, and 19, estimated.
 C - Many days in most years.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data