05528000 DATA: Discharge Tables, 2003

Station list Available data
ILLINOIS RIVER BASIN

05528000 DES PLAINES RIVER NEAR GURNEE, IL


LOCATION.-- Lat 42°20'39", long 87°56'18" (NAD of 1927), in SE1/4SW1/4 sec.27, T.45 N., R.11 E., Lake County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on State Highway 120, 2.5 mi southwest of Gurnee, and at mile 94.2.

DRAINAGE AREA.-- 232 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1945 to September 1958, October 1968 to current year.
	STAGE: Water years 1994 to current year.
	PARTIAL RECORD: Annual maximum, water years 1960-68.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1977-91.
PRECIPITATION: October 1999 to current year.

REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-76-1: 1960(M), 1962(M). WDR IL-77-1: 1971.

GAGE.-- Water-stage recorder, phone telemeter, and rain gage. Datum of gage is 650.30 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark). Prior to May 26, 1946, nonrecording gage. May 27, 1946, to Sept. 30, 1958, water-stage recorder. Dec. 17, 1959, to September 1968, crest-stage gage. October 1968 to September 1998, water stage recorder at site 800 ft upstream at same datum.

REMARKS.-- Effluent from sewage-treatment plants, 0.5 mi upstream. Collection, computation, and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,530 ft³/s, Sept. 27, 1986, gage height, 11.95 ft; no flow Sept. 26 to Oct. 19, 1956, and part of each day Aug. 27-30, Sept. 1, 2, 1970.
PRECIPITATION: Maximum daily total, 2.76 in., Oct. 13, 2001.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plants averaged 44.1 ft³/s. The maximum monthly effluent was 64.3 ft³/s in May, and the minimum was 37.7 ft³/s in February.

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	65	34	34	35	25	24	94	204	197	43	67	44
2	157	34	34	35	25	24	88	193	188	41	94	46
3	133	33	35	35	27	25	84	195	180	39	111	45
4	133	32	35	34	27	25	126	202	178	37	129	44
5	117	32	34	34	26	25	159	395	152	53	121	41

6	111	32	32	35	25	25	e165	370	133	95	128	41
7	100	32	32	34	25	25	169	367	118	130	134	43
8	84	32	31	35	25	26	175	353	120	158	116	43
9	72	35	30	35	24	25	167	474	121	229	100	43
10	53	37	30	34	24	25	168	499	120	234	88	44

11	53	35	29	32	23	26	174	499	114	214	79	41
12	49	37	29	33	23	27	186	487	108	193	74	48
13	45	37	29	31	23	33	186	449	101	164	68	52
14	43	37	30	29	23	39	178	424	94	137	65	57
15	41	39	31	28	23	45	159	408	87	191	64	49

16	40	36	32	27	22	53	138	368	83	189	66	45
17	37	35	32	26	23	63	121	325	73	180	60	43
18	36	34	45	26	23	76	110	285	71	195	54	42
19	35	37	53	25	23	84	104	244	79	177	51	40
20	35	34	56	25	24	89	101	221	80	149	49	40

21	33	45	61	24	25	91	102	191	76	238	48	41
22	32	61	59	23	25	97	101	171	74	212	46	46
23	32	54	55	23	26	99	97	156	70	167	46	42
24	33	47	50	23	26	94	90	140	65	129	45	42
25	43	43	44	23	25	97	84	125	56	101	46	40

26	42	40	42	23	26	95	78	114	54	84	47	46
27	40	38	39	23	24	93	75	104	50	72	45	55
28	40	36	37	23	24	99	72	119	50	65	44	43
29	40	34	35	23	---	104	70	130	49	78	43	42
30	37	34	36	23	---	101	78	122	46	73	42	40

31	37	---	37	24	---	99	---	205	---	68	42	---

TOTAL	1848	1126	1188	883	684	1853	3699	8539	2987	4135	2212	1328
MEAN	59.6	37.5	38.3	28.5	24.4	59.8	123	275	99.6	133	71.4	44.3
MAX	157	61	61	35	27	104	186	499	197	238	134	57
MIN	32	32	29	23	22	24	70	104	46	37	42	40

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1977 - 2003, BY WATER YEAR (WY)
MEAN	134	179	225	161	252	423	487	302	230	146	125	130
MAX	1011	785	865	514	626	1510	1395	847	1123	599	648	756
(WY)	1987	1986	1983	1993	2001	1979	1993	1996	2000	1993	1978	1986
MIN	16.6	16.5	12.7	10.6	11.9	59.8	79.9	31.3	23.1	23.9	15.0	18.3
(WY)	1977	1977	1977	1977	1977	2003	1977	1977	1977	1977	1977	1977

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1977 - 2003
ANNUAL TOTAL	51081		30482
ANNUAL MEAN	140		83.5		232
HIGHEST ANNUAL MEAN					428	1993
LOWEST ANNUAL MEAN					26.8	1977
HIGHEST DAILY MEAN	729	Apr 14	499	May 10	3470	Sep 27 1986
LOWEST DAILY MEAN	24	Aug 9	22	Feb 16	7.5	Feb 6 1977
ANNUAL SEVEN-DAY MINIMUM	25	Aug 6	23	Feb 11	7.9	Jan 31 1977
MAXIMUM PEAK FLOW			516	May 9	3530	Sep 27 1986
MAXIMUM PEAK STAGE			4.59	May 9	11.95	Sep 27 1986
INSTANTANEOUS LOW FLOW			16 A
10 PERCENT EXCEEDS	359		180		565
50 PERCENT EXCEEDS	77		46		121
90 PERCENT EXCEEDS	32		25		41

A - Jan. 25, 26 and Feb. 15, 16.