05579500 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05579500 LAKE FORK NEAR CORNLAND, IL

LOCATION.-- Lat 39°57'05", long 89°23'01", in NW1/4 SW1/4 sec.1, T.17 N., R.3 W., Logan County, Hydrologic Unit 07130009, on right bank at downstream side of bridge on State Highway 54, 100 ft upstream from a railroad bridge, 2.0 mi northeast of Cornland, 8 mi downstream from Jones Fork, and at mile 12.9.

DRAINAGE AREA.-- 214 mi².

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

DISCHARGE: January 1948 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 555.06 ft above sea level. Prior to Sept. 6, 1973, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,930 ft³/s, Apr. 12, 1979, gage height, 23.11 ft; minimum, 0.30 ft³/s, Sept. 16, 1988.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood in May 1943 reached a stage of 23.4 ft, from floodmarks, discharge 29,000 ft³/s, by contracted-opening measurement of peak flow.

REMARKS FOR CURRENT YEAR.-- Records fair except those for Mar. 1-14, June 8-22, and estimated daily discharges, which are poor.

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	17	39	64	e38	1160	666	142	47	115	46	3.3	8.4
2	18	38	60	e39	617	599	129	46	128	40	3.2	8.2
3	18	36	56	e40	469	533	123	42	126	38	4.4	8.4
4	18	34	58	e41	391	e480	109	45	449	42	3.5	7.6
5	23	34	59	e42	351	422	107	59	541	37	2.9	6.6

6	64	38	55	e43	313	371	113	53	1130	30	2.4	7.3
7	59	167	59	e44	326	341	101	50	973	28	2.2	7.6
8	49	186	58	e42	376	334	94	45	671	25	2.0	7.4
9	42	210	49	e40	736	314	89	41	e550	22	1.9	9.5
10	38	393	49	e38	871	275	89	42	e450	19	1.8	9.2

11	35	325	57	e36	618	251	96	83	398	17	1.6	8.1
12	33	265	e100	e35	524	256	96	108	335	16	1.4	7.6
13	31	271	e170	e35	464	255	83	91	300	13	1.4	7.8
14	30	273	e140	e45	502	230	79	89	253	12	1.2	6.2
15	82	235	e110	e100	677	238	81	86	230	10	1.1	5.9

16	102	212	e90	160	623	315	78	83	192	9.4	1.4	6.1
17	88	183	e82	131	520	461	75	79	162	8.6	1.3	6.5
18	75	159	e74	110	450	434	69	224	147	9.0	2.5	7.6
19	66	149	e68	e85	415	398	69	182	132	9.1	4.5	9.2
20	60	138	e62	e75	371	368	72	153	118	8.2	3.2	9.4

21	57	116	e58	e66	328	335	68	146	117	7.1	1.5	9.4
22	52	107	e55	e60	306	302	62	137	117	6.2	1.4	9.1
23	48	100	e52	e56	273	278	60	124	100	6.1	7.1	8.5
24	46	94	e49	e52	683	263	60	116	84	6.0	4.5	8.3
25	45	94	e46	e49	1890	244	54	106	77	4.8	4.3	8.8

26	45	94	e44	e47	1870	229	54	110	70	10	4.0	7.7
27	44	84	e42	e45	1130	210	53	118	63	7.5	4.4	7.9
28	41	78	e41	e44	771	196	50	105	58	5.1	5.5	7.6
29	39	74	e40	722	---	187	47	95	54	4.4	6.6	7.5
30	38	68	e39	2070	---	165	46	88	51	4.7	6.9	6.4

31	38	---	e38	2110	---	152	---	94	---	3.5	8.9	---

TOTAL	1441	4294	2024	6540	18025	10102	2448	2887	8191	504.7	102.3	235.8
MEAN	46.5	143	65.3	211	644	326	81.6	93.1	273	16.3	3.30	7.86
MAX	102	393	170	2110	1890	666	142	224	1130	46	8.9	9.5
MIN	17	34	38	35	273	152	46	41	51	3.5	1.1	5.9
CFSM	.22	.67	.31	.99	3.01	1.52	.38	.44	1.28	.08	.02	.04
IN.	.25	.75	.35	1.14	3.13	1.76	.43	.50	1.42	.09	.02	.04

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2001, BY WATER YEAR (WY)
MEAN	63.0	79.5	141	150	216	265	287	290	239	132	72.8	41.8
MAX	680	1009	1260	988	712	1116	1016	1024	1099	772	887	546
(WY)	1978	1986	1983	1950	1959	1979	1979	1995	1974	1981	1981	1993
MIN	2.02	2.06	2.46	4.01	5.02	6.56	16.7	7.27	17.0	7.20	3.30	1.57
(WY)	1955	1955	1964	1977	1963	1954	1954	1954	1963	1954	2001	1954

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1948 - 2001
ANNUAL TOTAL	42337		56794.8
ANNUAL MEAN	116		156		165
HIGHEST ANNUAL MEAN					372	1993
LOWEST ANNUAL MEAN					8.89	1954
HIGHEST DAILY MEAN	1470	Jun 21	2110	Jan 31	7000	Dec 4 1982
LOWEST DAILY MEAN	11	A	1.1	Aug 15	.77	Sep 16 1988
ANNUAL SEVEN-DAY MINIMUM	12	Jan 22	1.3	Aug 11	.96	Sep 7 1988
MAXIMUM PEAK FLOW			2230	Jan 31	8930	Apr 12 1979
MAXIMUM PEAK STAGE			17.06	Jan 31	23.11	Apr 12 1979
INSTANTANEOUS LOW FLOW			.78	Aug 18	.30	Sep 16 1988
ANNUAL RUNOFF (CFSM)	.54		.73		.77
ANNUAL RUNOFF (INCHES)	7.36		9.87		10.45
10 PERCENT EXCEEDS	262		405		400
50 PERCENT EXCEEDS	62		60		62
90 PERCENT EXCEEDS	16		6.2		6.8

A - Jan. 24-26, estimated due to backwater from ice.