05527950 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05527950 MILL CREEK AT OLD MILL CREEK, IL

LOCATION.-- Lat 42°24'55", long 87°58'08", in SW1/4SE1/4 sec.32, T.46 N., R.11 E., Lake County, Hydrologic Unit 07120004, on right bank at upstream side of bridge on Hunt Club Road, about 0.5 mi southeast of Old Mill Creek, and at mile 2.9.

DRAINAGE AREA.-- 61.0 mi².

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

DISCHARGE: October 1989 to current year.

STAGE: Water years 1994-2000.

PARTIAL RECORD: Annual maximum, water years 1962 to 1976.

REVISED RECORDS.-- WDR IL-77-1: 1962-76(M). WDR IL-91-2: 1990(P). WDR IL-92-2: 1990.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 668.00 ft above sea level. Prior to Oct. 1, 1989, at datum 8.85 ft higher.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: A gage height of 13.73 ft, present datum, discharge unknown, occurred between October 1976 and September 1989, from mark on crest-stage gage.

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	21	1.3	2.4	3.5	e5.2	77	19	89	222	81	55	7.2
2	14	.81	2.1	4.4	e5.0	70	18	77	410	68	42	7.0
3	10	1.1	2.5	5.8	e4.8	65	18	66	293	145	34	7.0
4	22	1.2	3.6	7.0	e4.7	60	17	58	256	122	32	6.9
5	17	.97	19	6.2	e4.6	57	16	51	302	105	29	6.7

6	14	.93	25	5.5	e4.6	54	14	44	254	93	37	6.7
7	11	.94	17	4.9	e4.6	48	15	39	201	79	36	6.7
8	9.3	1.0	13	4.6	e4.4	39	25	35	162	70	30	6.7
9	9.1	1.8	12	5.9	4.3	35	31	44	136	62	26	6.7
10	7.7	2.1	12	9.5	e4.4	33	32	82	118	e120	21	6.5

11	5.7	1.7	11	12	e4.5	31	29	82	112	111	19	6.9
12	3.8	1.5	10	12	e4.6	29	26	90	523	96	16	28
13	3.7	1.2	9.7	11	e4.8	25	23	75	707	86	15	20
14	3.5	.95	8.6	8.1	e4.9	22	21	64	605	90	15	22
15	3.1	.97	8.2	9.4	e4.9	22	20	59	532	79	13	24

16	3.0	1.0	9.3	e7.4	e4.9	23	18	53	e450	64	11	17
17	3.0	2.2	9.6	6.9	5.2	21	26	51	e390	54	15	14
18	3.0	3.3	7.7	e6.5	8.1	20	24	358	e334	45	17	12
19	2.9	4.6	e6.4	e6.4	8.8	20	51	536	e290	38	15	10
20	2.6	4.5	e5.4	e6.2	9.2	42	404	358	267	36	14	10

21	2.3	4.4	e4.6	e6.0	9.4	56	509	321	221	37	12	13
22	2.1	4.4	e4.0	e5.9	18	48	370	284	179	30	11	23
23	2.1	5.1	e3.5	e5.8	84	43	344	245	152	34	14	122
24	2.0	6.8	e3.3	e5.8	158	42	311	206	144	31	13	96
25	1.7	6.5	3.2	e5.8	158	42	263	167	150	25	11	81

26	.95	4.2	3.1	e5.6	120	37	222	143	136	19	9.6	69
27	1.3	3.9	3.1	e5.4	111	45	173	139	126	16	9.6	57
28	1.9	3.8	3.1	e5.2	101	42	139	161	114	18	9.4	44
29	2.0	3.7	3.3	e5.1	87	35	119	164	104	21	8.5	32
30	2.4	3.0	3.7	e5.2	---	28	102	139	93	21	7.7	27

31	1.7	---	3.6	e5.3	---	22	---	137	---	34	7.5	---

TOTAL	189.85	79.87	233.0	204.3	952.9	1233	3399	4417	7983	1930	605.3	796.0
MEAN	6.12	2.66	7.52	6.59	32.9	39.8	113	142	266	62.3	19.5	26.5
MAX	22	6.8	25	12	158	77	509	536	707	145	55	122
MIN	.95	.81	2.1	3.5	4.3	20	14	35	93	16	7.5	6.5
CFSM	.10	.04	.12	.11	.54	.65	1.86	2.34	4.37	1.02	.32	.44
IN.	.12	.05	.14	.12	.58	.75	2.07	2.70	4.87	1.18	.37	.49

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 2000, BY WATER YEAR (WY)
MEAN	8.80	38.8	40.3	50.3	73.5	94.5	122	92.6	78.4	32.5	11.4	8.54
MAX	34.1	127	106	126	134	157	297	245	266	168	44.0	26.5
(WY)	1991	1993	1992	1993	1997	1993	1993	1996	2000	1993	1990	2000
MIN	1.38	2.66	6.15	6.59	25.2	22.9	28.5	11.9	3.45	1.00	.55	.48
(WY)	1995	2000	1990	2000	1996	1996	1994	1994	1992	1991	1991	1991

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1990 - 2000
ANNUAL TOTAL	19694.91		22023.22
ANNUAL MEAN	54.0		60.2		54.1
HIGHEST ANNUAL MEAN					102	1993
LOWEST ANNUAL MEAN					29.3	1994
HIGHEST DAILY MEAN	777	Apr 23	707	Jun 13	777	Apr 23 1999
LOWEST DAILY MEAN	.81	Nov 2	.81	Nov 2	.03	Sep 11 1991
ANNUAL SEVEN-DAY MINIMUM	.99	Nov 2	.99	Nov 2	.05	Sep 5 1991
INSTANTANEOUS PEAK FLOW			1060	May 18	1160	Apr 23 1999
INSTANTANEOUS PEAK STAGE			12.01	May 18	12.21	Apr 23 1999
INSTANTANEOUS LOW FLOW			.73	Oct 26, Nov 2	.03	A
ANNUAL RUNOFF (CFSM)	.89		.99		.89
ANNUAL RUNOFF (INCHES)	12.02		13.44		12.05
10 PERCENT EXCEEDS	151		161		142
50 PERCENT EXCEEDS	14		18		25
90 PERCENT EXCEEDS	1.3		3.0		2.0

A - Sept. 7, 8, 10, 11, 1991.