05537500 DATA: Discharge Tables, 1998

Station list Available data
ILLINOIS RIVER BASIN

05537500 LONG RUN NEAR LEMONT, IL

LOCATION.--Lat 41°38'33", long 87°59'57", in SW1/4SE1/4 sec.32, T.37 N., R.11 E., Cook County, Hydrologic Unit 07120004, on left bank at downstream side of bridge on State Street, 2 mi south of Lemont, and at mile 5.4.

DRAINAGE AREA.--20.9 mi².

PERIOD OF RECORD.--July 1951 to current year.

REVISED RECORDS.--WSP 1338: 1952(M). WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 637.20 ft above sea level.

REMARKS.--Records good except those for Apr. 11 - Aug. 5, which are fair. Gage-height telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.6	2.8	6.5	9.2	25	13	113	25	4.6	11	1.3	1.8
2	4.2	2.2	5.0	8.7	79	13	84	20	3.9	8.3	1.3	1.8
3	4.2	2.2	4.0	24	54	12	50	16	4.3	8.3	1.4	2.7
4	4.4	2.1	4.1	127	35	18	35	18	5.2	43	46	2.2
5	4.9	1.9	3.7	124	25	21	25	16	3.5	17	70	1.7

6	3.4	2.5	3.2	151	20	19	21	73	4.3	11	26	1.8
7	1.4	3.1	3.0	84	17	17	20	611	3.2	36	15	121
8	2.2	2.8	2.9	95	15	73	79	401	2.9	24	25	40
9	3.4	2.9	2.7	111	14	168	84	194	11	12	16	14
10	3.9	4.8	3.9	60	13	114	44	86	8.3	8.5	10	9.1

11	3.1	1.9	8.3	35	93	68	29	51	41	7.0	7.1	6.4
12	3.3	1.4	6.7	25	116	42	23	37	40	5.8	5.7	5.0
13	5.5	1.3	7.2	20	54	33	23	31	16	4.9	4.4	4.2
14	5.7	1.4	5.3	17	35	30	69	23	10	4.5	3.5	3.6
15	3.5	3.2	4.6	16	28	28	42	17	9.6	4.0	2.6	5.0

16	2.7	5.4	5.2	13	23	27	30	14	7.0	3.5	2.1	4.2
17	2.2	2.5	6.7	12	47	93	22	12	6.7	2.7	2.4	3.1
18	2.1	2.3	6.5	11	95	368	18	10	6.0	2.5	2.8	2.6
19	1.7	3.9	6.6	9.7	56	203	16	8.7	16	7.4	2.1	2.4
20	1.2	3.3	6.9	9.3	38	108	19	7.8	9.4	5.5	2.0	3.1

21	.89	2.1	6.3	8.3	29	59	49	7.4	6.7	4.4	2.0	3.2
22	.88	3.2	7.0	8.5	22	39	33	7.3	5.3	5.6	3.1	2.8
23	.99	2.0	13	9.0	19	30	25	6.7	4.4	4.5	2.6	2.1
24	1.0	1.7	12	8.8	24	26	18	12	3.6	3.1	4.4	1.8
25	1.3	2.9	31	8.0	20	21	17	9.2	3.0	2.5	6.2	1.8

26	2.3	2.2	29	7.4	17	18	21	7.0	234	2.2	2.7	1.9
27	24	2.0	18	7.1	17	16	32	5.8	90	1.8	2.1	2.0
28	9.7	5.3	13	7.4	14	31	20	5.2	39	1.8	5.4	2.1
29	5.3	9.4	11	9.9	---	29	34	7.9	23	1.6	4.7	2.1
30	3.8	11	9.9	12	---	21	31	6.3	16	1.4	2.9	3.9

31	3.3	---	8.4	13	---	55	---	5.1	---	1.3	2.2	---

TOTAL	121.06	95.7	261.6	1061.3	1044	1813	1126	1751.4	637.9	257.1	285.0	259.4
MEAN	3.91	3.19	8.44	34.2	37.3	58.5	37.5	56.5	21.3	8.29	9.19	8.65
MAX	24	11	31	151	116	368	113	611	234	43	70	121
MIN	.88	1.3	2.7	7.1	13	12	16	5.1	2.9	1.3	1.3	1.7
CFSM	.19	.15	.40	1.64	1.78	2.80	1.80	2.70	1.02	.40	.44	.41
IN.	.22	.17	.47	1.89	1.86	3.23	2.00	3.12	1.14	.46	.51	.46

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 1998, BY WATER YEAR (WY)
MEAN	9.83	14.4	17.0	16.2	21.3	35.5	35.6	22.9	17.4	11.3	5.35	7.83
MAX	163	71.9	92.2	75.5	104	131	86.9	74.5	89.6	126	27.4	74.9
(WY)	1955	1986	1983	1993	1997	1979	1975	1966	1993	1996	1972	1961
MIN	.000	.006	.016	.020	.028	2.19	1.69	2.83	.73	.048	.000	.000
(WY)	1965	1972	1964	1977	1964	1964	1963	1958	1988	1961	1964	1963

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1951 - 1998
ANNUAL TOTAL	6375.26		8713.46
ANNUAL MEAN	17.5		23.9		17.8
HIGHEST ANNUAL MEAN					39.9	1993
LOWEST ANNUAL MEAN					3.37	1963
HIGHEST DAILY MEAN	1090	Feb 21	611	May 7	2190	Jul 18 1996
LOWEST DAILY MEAN	.88	Oct 22	.88	Oct 22	.00	A
ANNUAL SEVEN-DAY MINIMUM	1.1	Oct 19	1.1	Oct 19	.00	Aug 27 1953
INSTANTANEOUS PEAK FLOW			820	May 7	5310 B	Jul 18 1996
INSTANTANEOUS PEAK STAGE			6.95	May 7	11.10	Jul 18 1996
INSTANTANEOUS LOW FLOW			.71	Oct 22-24
ANNUAL RUNOFF (CFSM)	.84		1.14		.85
ANNUAL RUNOFF (INCHES)	11.35		15.51		11.58
10 PERCENT EXCEEDS	24		54		42
50 PERCENT EXCEEDS	6.5		8.3		5.0
90 PERCENT EXCEEDS	2.0		2.1		.10

A - At times in most years.
B - From rating curve extended above 2,800 ft³/s.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.6	2.8	6.5	9.2	25	13	113	25	4.6	11	1.3	1.8
2	4.2	2.2	5.0	8.7	79	13	84	20	3.9	8.3	1.3	1.8
3	4.2	2.2	4.0	24	54	12	50	16	4.3	8.3	1.4	2.7
4	4.4	2.1	4.1	127	35	18	35	18	5.2	43	46	2.2
5	4.9	1.9	3.7	124	25	21	25	16	3.5	17	70	1.7

6	3.4	2.5	3.2	151	20	19	21	73	4.3	11	26	1.8
7	1.4	3.1	3.0	84	17	17	20	611	3.2	36	15	121
8	2.2	2.8	2.9	95	15	73	79	401	2.9	24	25	40
9	3.4	2.9	2.7	111	14	168	84	194	11	12	16	14
10	3.9	4.8	3.9	60	13	114	44	86	8.3	8.5	10	9.1

11	3.1	1.9	8.3	35	93	68	29	51	41	7.0	7.1	6.4
12	3.3	1.4	6.7	25	116	42	23	37	40	5.8	5.7	5.0
13	5.5	1.3	7.2	20	54	33	23	31	16	4.9	4.4	4.2
14	5.7	1.4	5.3	17	35	30	69	23	10	4.5	3.5	3.6
15	3.5	3.2	4.6	16	28	28	42	17	9.6	4.0	2.6	5.0

16	2.7	5.4	5.2	13	23	27	30	14	7.0	3.5	2.1	4.2
17	2.2	2.5	6.7	12	47	93	22	12	6.7	2.7	2.4	3.1
18	2.1	2.3	6.5	11	95	368	18	10	6.0	2.5	2.8	2.6
19	1.7	3.9	6.6	9.7	56	203	16	8.7	16	7.4	2.1	2.4
20	1.2	3.3	6.9	9.3	38	108	19	7.8	9.4	5.5	2.0	3.1

21	.89	2.1	6.3	8.3	29	59	49	7.4	6.7	4.4	2.0	3.2
22	.88	3.2	7.0	8.5	22	39	33	7.3	5.3	5.6	3.1	2.8
23	.99	2.0	13	9.0	19	30	25	6.7	4.4	4.5	2.6	2.1
24	1.0	1.7	12	8.8	24	26	18	12	3.6	3.1	4.4	1.8
25	1.3	2.9	31	8.0	20	21	17	9.2	3.0	2.5	6.2	1.8

26	2.3	2.2	29	7.4	17	18	21	7.0	234	2.2	2.7	1.9
27	24	2.0	18	7.1	17	16	32	5.8	90	1.8	2.1	2.0
28	9.7	5.3	13	7.4	14	31	20	5.2	39	1.8	5.4	2.1
29	5.3	9.4	11	9.9	---	29	34	7.9	23	1.6	4.7	2.1
30	3.8	11	9.9	12	---	21	31	6.3	16	1.4	2.9	3.9

31	3.3	---	8.4	13	---	55	---	5.1	---	1.3	2.2	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.6	2.8	6.5	9.2	25	13	113	25	4.6	11	1.3	1.8
2	4.2	2.2	5.0	8.7	79	13	84	20	3.9	8.3	1.3	1.8
3	4.2	2.2	4.0	24	54	12	50	16	4.3	8.3	1.4	2.7
4	4.4	2.1	4.1	127	35	18	35	18	5.2	43	46	2.2
5	4.9	1.9	3.7	124	25	21	25	16	3.5	17	70	1.7

6	3.4	2.5	3.2	151	20	19	21	73	4.3	11	26	1.8
7	1.4	3.1	3.0	84	17	17	20	611	3.2	36	15	121
8	2.2	2.8	2.9	95	15	73	79	401	2.9	24	25	40
9	3.4	2.9	2.7	111	14	168	84	194	11	12	16	14
10	3.9	4.8	3.9	60	13	114	44	86	8.3	8.5	10	9.1

11	3.1	1.9	8.3	35	93	68	29	51	41	7.0	7.1	6.4
12	3.3	1.4	6.7	25	116	42	23	37	40	5.8	5.7	5.0
13	5.5	1.3	7.2	20	54	33	23	31	16	4.9	4.4	4.2
14	5.7	1.4	5.3	17	35	30	69	23	10	4.5	3.5	3.6
15	3.5	3.2	4.6	16	28	28	42	17	9.6	4.0	2.6	5.0

16	2.7	5.4	5.2	13	23	27	30	14	7.0	3.5	2.1	4.2
17	2.2	2.5	6.7	12	47	93	22	12	6.7	2.7	2.4	3.1
18	2.1	2.3	6.5	11	95	368	18	10	6.0	2.5	2.8	2.6
19	1.7	3.9	6.6	9.7	56	203	16	8.7	16	7.4	2.1	2.4
20	1.2	3.3	6.9	9.3	38	108	19	7.8	9.4	5.5	2.0	3.1

21	.89	2.1	6.3	8.3	29	59	49	7.4	6.7	4.4	2.0	3.2
22	.88	3.2	7.0	8.5	22	39	33	7.3	5.3	5.6	3.1	2.8
23	.99	2.0	13	9.0	19	30	25	6.7	4.4	4.5	2.6	2.1
24	1.0	1.7	12	8.8	24	26	18	12	3.6	3.1	4.4	1.8
25	1.3	2.9	31	8.0	20	21	17	9.2	3.0	2.5	6.2	1.8

26	2.3	2.2	29	7.4	17	18	21	7.0	234	2.2	2.7	1.9
27	24	2.0	18	7.1	17	16	32	5.8	90	1.8	2.1	2.0
28	9.7	5.3	13	7.4	14	31	20	5.2	39	1.8	5.4	2.1
29	5.3	9.4	11	9.9	---	29	34	7.9	23	1.6	4.7	2.1
30	3.8	11	9.9	12	---	21	31	6.3	16	1.4	2.9	3.9

31	3.3	---	8.4	13	---	55	---	5.1	---	1.3	2.2	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.6	2.8	6.5	9.2	25	13	113	25	4.6	11	1.3	1.8
2	4.2	2.2	5.0	8.7	79	13	84	20	3.9	8.3	1.3	1.8
3	4.2	2.2	4.0	24	54	12	50	16	4.3	8.3	1.4	2.7
4	4.4	2.1	4.1	127	35	18	35	18	5.2	43	46	2.2
5	4.9	1.9	3.7	124	25	21	25	16	3.5	17	70	1.7

6	3.4	2.5	3.2	151	20	19	21	73	4.3	11	26	1.8
7	1.4	3.1	3.0	84	17	17	20	611	3.2	36	15	121
8	2.2	2.8	2.9	95	15	73	79	401	2.9	24	25	40
9	3.4	2.9	2.7	111	14	168	84	194	11	12	16	14
10	3.9	4.8	3.9	60	13	114	44	86	8.3	8.5	10	9.1

11	3.1	1.9	8.3	35	93	68	29	51	41	7.0	7.1	6.4
12	3.3	1.4	6.7	25	116	42	23	37	40	5.8	5.7	5.0
13	5.5	1.3	7.2	20	54	33	23	31	16	4.9	4.4	4.2
14	5.7	1.4	5.3	17	35	30	69	23	10	4.5	3.5	3.6
15	3.5	3.2	4.6	16	28	28	42	17	9.6	4.0	2.6	5.0

16	2.7	5.4	5.2	13	23	27	30	14	7.0	3.5	2.1	4.2
17	2.2	2.5	6.7	12	47	93	22	12	6.7	2.7	2.4	3.1
18	2.1	2.3	6.5	11	95	368	18	10	6.0	2.5	2.8	2.6
19	1.7	3.9	6.6	9.7	56	203	16	8.7	16	7.4	2.1	2.4
20	1.2	3.3	6.9	9.3	38	108	19	7.8	9.4	5.5	2.0	3.1

21	.89	2.1	6.3	8.3	29	59	49	7.4	6.7	4.4	2.0	3.2
22	.88	3.2	7.0	8.5	22	39	33	7.3	5.3	5.6	3.1	2.8
23	.99	2.0	13	9.0	19	30	25	6.7	4.4	4.5	2.6	2.1
24	1.0	1.7	12	8.8	24	26	18	12	3.6	3.1	4.4	1.8
25	1.3	2.9	31	8.0	20	21	17	9.2	3.0	2.5	6.2	1.8

26	2.3	2.2	29	7.4	17	18	21	7.0	234	2.2	2.7	1.9
27	24	2.0	18	7.1	17	16	32	5.8	90	1.8	2.1	2.0
28	9.7	5.3	13	7.4	14	31	20	5.2	39	1.8	5.4	2.1
29	5.3	9.4	11	9.9	---	29	34	7.9	23	1.6	4.7	2.1
30	3.8	11	9.9	12	---	21	31	6.3	16	1.4	2.9	3.9

31	3.3	---	8.4	13	---	55	---	5.1	---	1.3	2.2	---