03612000 DATA: Discharge Tables, 2001

Station list Available data
CACHE RIVER BASIN

03612000 CACHE RIVER AT FORMAN, IL

LOCATION.-- Lat 37°20'11", long 88°55'26", in NE1/4NW1/4 sec.6, T.14 S., R.3 E., Johnson County, Hydrologic Unit 05140206, at downstream side of bridge on County Highway 3, 1.2 mi southwest of Forman, and at mile 8.1.

DRAINAGE AREA.-- 244 mi².

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

DISCHARGE: October 1922 to July 1924, September 1924 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

REVISED RECORDS.-- WSP 623: 1923-24. WSP 823: 1934-35. WSP 1205: 1923-24, 1927-30. WSP 1335: 1923(M), 1925, 1926-27(M), 1928, 1929-30(M), 1931, 1933, 1934-36(M), 1937-39. WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 308.47 ft. above sea level. Dec. 30, 1971 to Sept. 30, 1997, recording gage at same site at datum 10.0 ft. higher. Oct. 1, 1958, to Dec. 30, 1971, nonrecording gage at same site and datum 10.0 ft. higher. See WSP 1705 or 1725 for history of changes prior to Sept. 30, 1958.

REMARKS.-- Flow of lower part of Cache River Basin was diverted from Ohio River to Mississippi River beginning Oct. 31, 1950, through diversion channel of Mounds-Mound City flood-protection project. Flow of upper part of Cache River Basin, including flow past this station, continued to discharge to Ohio River, passing through Post Creek cutoff directly to Ohio River instead of through the original channel of Cache River.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 9,630 ft³/s, March 12, 1935, gage height, 42.29 ft, site then in use, from graph based on gage readings; minimum discharge, no flow at times in some years.

REMARKS FOR CURRENT YEAR.-- Records good except those for periods of backwater from the Ohio River, Feb. 17 to Mar. 3, and those for 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	6.0	1.0	28	e26	307	e259	104	27	22	4.1	52	7.2
2	4.2	1.0	22	e26	186	e186	107	25	20	3.4	30	9.8
3	3.1	.89	19	e25	124	e149	839	23	20	3.0	21	24
4	2.4	.68	16	e24	94	373	822	22	23	3.9	15	16
5	2.4	.58	13	e24	82	540	635	21	19	5.7	11	10

6	2.9	1.2	13	e23	75	455	496	20	18	4.5	9.1	6.8
7	2.2	1.6	13	e26	68	298	323	20	17	5.0	7.0	6.3
8	1.5	16	11	e34	63	211	233	20	14	7.2	6.0	18
9	1.3	338	12	e50	68	164	181	18	13	5.5	5.9	13
10	1.2	325	12	75	238	132	148	17	12	3.9	8.7	16

11	1.1	221	24	54	380	110	130	16	13	3.2	43	13
12	1.1	96	326	44	251	104	114	16	11	2.6	38	15
13	1.2	49	386	47	162	461	100	15	8.4	2.2	25	15
14	1.2	32	247	61	147	346	84	13	6.8	1.9	16	11
15	1.3	25	148	180	598	254	81	11	5.1	1.8	11	7.4

16	1.3	22	537	310	1020	389	77	9.0	4.2	1.6	7.8	5.3
17	1.4	20	739	209	e845	400	71	8.9	3.7	1.5	4.6	4.0
18	1.2	37	508	133	e556	301	62	8.5	4.0	1.9	5.5	3.3
19	1.0	25	e370	111	e447	207	55	12	7.3	2.6	102	6.5
20	1.1	16	e260	104	e281	159	50	55	7.5	2.1	209	26

21	1.1	10	e200	e90	e165	132	48	63	129	18	90	29
22	1.2	8.5	e160	e80	e221	115	48	59	67	27	38	17
23	1.1	8.1	e110	e60	e269	102	46	62	26	22	21	11
24	.87	8.1	e90	e52	e256	91	56	43	27	24	14	7.7
25	.96	25	e70	e50	e735	80	46	31	17	19	20	4.8

26	.99	242	e50	e48	e526	71	43	25	12	379	77	2.9
27	.94	238	e42	46	e460	64	40	24	9.3	304	42	2.2
28	1.1	119	e37	42	e393	59	35	20	6.6	134	19	1.6
29	1.2	62	e34	42	---	56	31	18	5.0	237	10	1.4
30	1.3	39	e30	259	---	60	29	16	4.5	203	4.3	1.3

31	1.1	---	e28	443	---	83	---	15	---	116	6.9	---

TOTAL	50.96	1988.65	4555	2798	9017	6411	5134	753.4	552.4	1550.6	969.8	312.5
MEAN	1.64	66.3	147	90.3	322	207	171	24.3	18.4	50.0	31.3	10.4
MAX	6.0	338	739	443	1020	540	839	63	129	379	209	29
MIN	.87	.58	11	23	63	56	29	8.5	3.7	1.5	4.3	1.3
CFSM	.01	.27	.60	.37	1.32	.85	.70	.10	.08	.20	.13	.04
IN.	.01	.30	.69	.43	1.37	.98	.78	.11	.08	.24	.15	.05

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1923 - 2001, BY WATER YEAR (WY)
MEAN	52.8	189	318	493	489	593	563	410	215	88.1	72.6	55.8
MAX	487	1097	2192	3039	1813	2268	2244	1847	1759	1257	826	542
(WY)	1928	1958	1983	1950	1950	1945	1927	1983	1928	1958	1985	1950
MIN	.019	.66	.58	1.38	7.05	12.4	40.7	10.4	1.37	1.71	.000	.43
(WY)	1964	1954	1964	1977	1934	1941	1981	1930	1936	1931	1930	1953

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1923 - 2001
ANNUAL TOTAL	70941.41		34093.31
ANNUAL MEAN	194		93.4		293
HIGHEST ANNUAL MEAN					779	1950
LOWEST ANNUAL MEAN					37.5	1941
HIGHEST DAILY MEAN	2700	Jan 4	1020	Feb 16	8780	Jan 26 1929
LOWEST DAILY MEAN	.58	Nov 5	.58	Nov 5	.00	A
ANNUAL SEVEN-DAY MINIMUM	.92	Oct 31	.92	Oct 31	.00	Jul 29 1930
MAXIMUM PEAK FLOW			1270 B	Feb 16	9630	Mar 12 1935
MAXIMUM PEAK STAGE			18.94 C	Feb 25	42.29 D	Mar 12 1935
INSTANTANEOUS LOW FLOW			.51	Nov 5
ANNUAL RUNOFF (CFSM)	.79		.38		1.20
ANNUAL RUNOFF (INCHES)	10.82		5.20		16.30
10 PERCENT EXCEEDS	716		299		842
50 PERCENT EXCEEDS	31		25		54
90 PERCENT EXCEEDS	2.4		1.7		1.8

	A - At times in some years.
	B - Gage height, 18.85 ft.
	C - Discharge, 903 ft³/s, variable backwater.
	D - Site then in use, from graph based on gage readings.