05528000 DATA: Discharge Tables, 2004

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, 3,890 ft³/s, May 25, 2004, gage height, 11.76 ft; maximum gage height, 11.95 ft, Sept. 27, 1986; 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 fair. Effluent from sewage-treatment plants averaged 52.2 ft³/s. The maximum monthly effluent was 77.7 ft³/s in May, and the minimum was 39.6 ft³/s in January.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	37	38	100	149	62	335	782	206	1380	424	54	69
2	37	101	93	143	63	392	723	188	1280	340	54	61
3	42	226	89	140	63	437	669	171	1180	286	52	56
4	40	240	86	138	64	464	613	154	1050	402	98	53
5	39	337	105	127	64	780	559	140	943	437	80	49

6	39	269	101	105	63	930	508	128	830	488	79	48
7	36	238	98	126	64	999	457	125	729	527	75	48
8	36	205	94	118	64	965	401	119	635	572	66	40
9	35	165	98	108	65	938	341	130	565	613	61	51
10	34	131	343	104	63	921	281	146	702	645	54	43

11	36	115	429	104	63	904	234	192	886	608	51	44
12	37	103	450	104	62	871	206	250	1100	546	49	44
13	39	98	426	104	62	811	186	417	1140	461	47	44
14	67	89	400	104	62	749	173	594	1040	355	44	44
15	49	84	385	94	61	675	161	742	947	231	44	47

16	40	81	367	98	60	601	151	778	863	162	45	57
17	40	78	346	96	59	532	175	781	786	137	50	57
18	39	189	321	91	59	470	174	1140	698	120	48	53
19	40	191	291	86	62	409	174	1170	614	110	55	53
20	39	190	229	82	78	349	179	1130	546	98	48	50

21	38	183	202	75	93	305	274	1100	553	91	47	49
22	37	174	196	71	97	271	281	1730	621	92	47	40
23	36	165	185	67	127	245	277	2730	643	92	46	48
24	35	171	167	66	174	266	260	3600	680	90	49	48
25	46	152	146	67	208	304	289	3810	712	83	52	46

26	39	137	136	67	223	480	276	3430	707	76	48	56
27	39	128	137	66	240	564	262	2870	670	66	54	47
28	38	118	151	66	261	619	245	2320	622	65	95	46
29	37	112	155	65	287	842	230	1860	563	60	97	43
30	38	106	154	63	---	866	218	1570	495	58	87	43

31	38	---	154	61	---	843	---	1500	---	57	76	---

TOTAL	1222	4614	6634	2955	2973	19137	9759	35221	24180	8392	1852	1477
MEAN	39.4	154	214	95.3	103	617	325	1136	806	271	59.7	49.2
MAX	67	337	450	149	287	999	782	3810	1380	645	98	69
MIN	34	38	86	61	59	245	151	119	495	57	44	40

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1977 - 2004, BY WATER YEAR (WY)
MEAN	131	178	225	158	247	430	481	331	250	151	122	127
MAX	1011	785	865	514	626	1510	1395	1136	1123	599	648	756
(WY)	1987	1986	1983	1993	2001	1979	1993	2004	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 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1977 - 2004
ANNUAL TOTAL	38790		118416
ANNUAL MEAN	106		324		236
HIGHEST ANNUAL MEAN					428	1993
LOWEST ANNUAL MEAN					26.8	1977
HIGHEST DAILY MEAN	499	May 10,11	3810	May 25	3810	May 25 2004
LOWEST DAILY MEAN	22	Feb 16	34	Oct 10	7.5	Feb 6 1977
ANNUAL SEVEN-DAY MINIMUM	23	Feb 11	36	Oct 6	7.9	Jan 31 1977
MAXIMUM PEAK FLOW			3890	May 25	3890 A	May 25 2004
MAXIMUM PEAK STAGE			11.76	May 25	11.95 B	Sep 27 1986
INSTANTANEOUS LOW FLOW			27	Oct 11
10 PERCENT EXCEEDS	213		817		575
50 PERCENT EXCEEDS	76		134		122
90 PERCENT EXCEEDS	25		44		41

	A - Gage height, 11.76 ft.
	B - Discharge, 3,530 ft³/s.