05528000 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05528000 DES PLAINES RIVER NEAR GURNEE, IL

LOCATION.-- Lat 42°20'39", long 87°56'18", 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 1994-2001.

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 sea level (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, 2.44 in., May 18, 2000.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plants averaged 50.3 ft³/s. The maximum monthly effluent was 68.4 ft³/s in June, and the minimum was 45.8 ft³/s in October.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	257	67	163	106	338	856	225	263	399	e80	53	66
2	180	67	168	108	335	848	213	220	377	e70	61	63
3	126	66	167	106	360	800	205	194	344	e62	58	62
4	172	66	164	107	354	734	193	176	318	e56	55	61
5	156	66	148	109	329	671	188	155	317	e52	52	55

6	175	65	136	112	302	598	218	144	341	60	53	59
7	165	136	136	114	271	530	220	159	370	79	51	91
8	155	153	126	116	272	480	218	162	399	71	51	84
9	141	282	115	114	691	427	233	154	417	66	54	115
10	125	404	123	113	878	373	227	155	425	58	e60	143

11	113	450	111	113	989	337	273	262	425	53	53	140
12	103	463	107	116	1040	314	382	286	589	54	e44	129
13	95	469	122	122	1080	308	398	297	641	55	e38	120
14	93	461	110	134	1120	305	e500	350	643	53	49	113
15	89	441	103	167	1100	339	e560	466	632	51	47	97

16	84	413	119	199	1000	412	e520	483	637	52	95	87
17	76	379	120	219	835	462	e460	475	648	72	75	79
18	74	332	116	231	712	491	424	462	662	70	79	69
19	73	270	115	241	645	525	385	444	648	71	138	340
20	72	217	113	233	547	552	379	418	606	64	120	279

21	71	170	111	214	447	543	377	387	556	61	114	335
22	71	165	109	205	388	515	401	328	491	67	108	294
23	68	158	106	186	332	479	493	260	409	75	130	312
24	66	141	107	168	337	438	569	226	301	75	112	322
25	69	136	102	153	541	400	565	209	201	82	93	282

26	72	150	102	146	702	359	540	193	154	74	89	251
27	80	158	102	137	769	318	497	320	129	67	78	214
28	92	161	102	129	806	277	447	352	113	61	75	182
29	82	163	101	135	---	251	392	383	101	57	73	155
30	74	159	102	244	---	242	329	373	e90.0	56	68	132

31	70	---	105	304	---	227	---	364	---	54	69	---

TOTAL	3339	6828	3731	4901	17520	14411	11031	9120	12383.0	1978	2295	4731
MEAN	108	228	120	158	626	465	368	294	413	63.8	74.0	158
MAX	257	469	168	304	1120	856	569	483	662	82	138	340
MIN	66	65	101	106	271	227	188	144	90	51	38	55

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1977 - 2001, BY WATER YEAR (WY)
MEAN	124	182	235	169	264	444	505	307	232	151	130	137
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	61.8	79.9	31.3	23.1	23.9	15.0	18.3
(WY)	1977	1977	1977	1977	1977	1977	1977	1977	1977	1977	1977	1977

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1977 - 2001
ANNUAL TOTAL	109240		92268.0
ANNUAL MEAN	298		253		240
HIGHEST ANNUAL MEAN					428	1993
LOWEST ANNUAL MEAN					26.8	1977
HIGHEST DAILY MEAN	2640	Jun 16	1120	Feb 14	3470	Sep 27 1986
LOWEST DAILY MEAN	47	Jan 2, Sep 10	38 A	Aug 13	7.5	Feb 6 1977
ANNUAL SEVEN-DAY MINIMUM	49	Sep 4	49	Aug 9	7.9	Jan 31 1977
MAXIMUM PEAK FLOW			1140	Feb 14	3530	Sep 27 1986
MAXIMUM PEAK STAGE			7.04	Feb 14	11.95	Sep 27 1986
INSTANTANEOUS LOW FLOW			41	Aug 15
10 PERCENT EXCEEDS	849		542		580
50 PERCENT EXCEEDS	140		164		124
90 PERCENT EXCEEDS	56		64		43

A - Estimated.