05540091 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05540091 SPRING BROOK AT FOREST PRESERVE NEAR WARRENVILLE, IL

LOCATION.-- Lat 41°50'07", long 88°10'56", in SW1/4SW1/4 sec.26, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on right bank on upstream side of footbridge in Roy C. Blackwell Forest Preserve, 0.7 mi upstream from the confluence with the West Branch Du Page River and 1 mi northwest of Warrenville.

DRAINAGE AREA.-- 6.83 mi².

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

DISCHARGE: October 1991 to current year.

STAGE: Water years 1994-2000.

GAGE.-- Water-stage recorder and crest-stage gage. Datum of gage is 690.15 ft above sea level.

REMARKS.-- Effluent from sewage-treatment plant 3 mi upstream.

REMARKS FOR CURRENT YEAR.-- Records good 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	11	e8.8	7.4	7.3	8.9	11	9.8	16	23	13	19	6.3
2	9.3	e8.0	7.6	7.6	8.8	9.0	10	15	22	8.8	15	4.2
3	13	7.6	15	8.8	8.8	8.5	10	13	14	74	10	5.2
4	22	7.7	11	16	8.8	8.2	10	11	12	27	8.3	6.8
5	13	7.4	42	13	8.8	8.0	10	11	16	22	11	6.4

6	10	6.9	20	12	8.8	7.8	10	11	13	18	18	6.3
7	9.3	7.1	14	12	8.8	7.5	12	11	11	15	24	5.9
8	9.2	6.9	10	11	8.4	8.1	16	10	9.3	14	13	5.0
9	8.8	7.6	9.0	13	8.5	7.6	12	44	8.0	14	9.9	5.7
10	8.7	7.4	9.0	15	9.8	7.2	10	29	8.4	30	7.6	6.8

11	12	7.1	8.6	14	11	7.8	10	26	20	22	8.0	19
12	11	7.5	9.3	12	9.3	8.9	9.7	26	57	18	6.6	75
13	9.9	7.2	8.1	12	8.6	9.5	8.9	26	47	14	6.4	21
14	9.3	7.4	7.9	11	8.2	9.2	7.9	19	41	11	6.4	23
15	9.1	7.3	8.5	11	7.2	10	8.4	16	33	9.6	7.5	19

16	9.6	7.4	9.0	12	7.0	16	12	17	24	9.2	7.0	12
17	9.5	7.3	8.2	11	7.0	12	40	16	19	7.1	13	11
18	9.0	7.3	7.8	11	7.6	10	22	15	17	6.4	12	10
19	7.8	7.3	7.7	11	7.5	11	38	19	15	7.6	8.1	8.9
20	7.6	7.2	8.1	10	7.7	15	162	15	19	6.1	7.0	11

21	6.6	7.5	7.8	9.7	8.5	14	100	12	20	7.7	5.9	15
22	8.3	7.9	7.5	9.5	18	12	49	13	14	6.4	6.6	16
23	8.0	8.4	7.4	9.6	22	11	37	12	11	7.1	7.2	26
24	8.1	8.3	7.5	9.9	26	11	30	10	30	6.9	7.0	19
25	8.1	3.8	6.8	9.4	21	11	25	9.2	51	6.0	5.6	17

26	8.0	4.4	6.6	9.1	16	10	22	8.4	22	6.1	6.4	13
27	7.6	6.7	6.9	8.8	13	12	21	12	18	5.5	6.8	11
28	7.5	7.3	6.3	8.5	12	11	19	15	15	7.1	6.0	9.9
29	e7.0	7.9	7.8	8.7	11	10	19	14	17	7.0	5.7	9.4
30	e7.3	7.9	7.2	9.0	---	9.6	17	12	15	14	6.0	9.2

31	e8.0	---	7.6	9.2	---	9.6	---	18	---	23	5.4	---

TOTAL	293.6	218.5	307.6	332.1	317.0	313.5	767.7	501.6	641.7	443.6	286.4	414.0
MEAN	9.47	7.28	9.92	10.7	10.9	10.1	25.6	16.2	21.4	14.3	9.24	13.8
MAX	22	8.8	42	16	26	16	162	44	57	74	24	75
MIN	6.6	3.8	6.3	7.3	7.0	7.2	7.9	8.4	8.0	5.5	5.4	4.2
CFSM	1.39	1.07	1.45	1.57	1.60	1.48	3.75	2.37	3.13	2.10	1.35	2.02
IN.	1.60	1.19	1.68	1.81	1.73	1.71	4.18	2.73	3.50	2.42	1.56	2.25

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1992 - 2000, BY WATER YEAR (WY)
MEAN	11.6	14.1	12.4	16.8	15.6	17.8	23.2	17.7	18.4	12.6	12.1	10.7
MAX	24.8	20.9	17.9	29.5	35.4	28.5	34.4	26.7	30.2	29.6	17.4	16.1
(WY)	1999	1995	1993	1993	1997	1998	1993	1996	1993	1996	1997	1998
MIN	7.35	6.49	7.72	8.92	7.37	10.1	8.35	6.98	7.41	8.44	7.33	6.60
(WY)	1995	1994	1994	1994	1996	2000	1994	1994	1992	1995	1999	1995

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1992 - 2000
ANNUAL TOTAL	5781.7		4837.3
ANNUAL MEAN	15.8		13.2		15.2
HIGHEST ANNUAL MEAN					18.8	1993
LOWEST ANNUAL MEAN					11.3	1994
HIGHEST DAILY MEAN	128	Apr 23	162	Apr 20	309	Jul 18 1996
LOWEST DAILY MEAN	3.8	Nov 25	3.8	Nov 25	3.8	Nov 25 1999
ANNUAL SEVEN-DAY MINIMUM	5.5	Sep 2	5.5	Aug 28	4.6	Nov 5 1993
INSTANTANEOUS PEAK FLOW			282	Apr 20	393	Jul 18 1996
INSTANTANEOUS PEAK STAGE			11.09	Apr 20	12.60	Jul 18 1996
INSTANTANEOUS LOW FLOW			.00	Nov 25	.00	Nov 25 1999
ANNUAL RUNOFF (CFSM)	2.32		1.94		2.23
ANNUAL RUNOFF (INCHES)	31.49		26.35		30.31
10 PERCENT EXCEEDS	31		22		27
50 PERCENT EXCEEDS	9.8		9.7		11
90 PERCENT EXCEEDS	6.6		6.9		6.4