05590800 DATA: Discharge Tables, 2001

Station list Available data
KASKASKIA RIVER BASIN

05590800 LAKE FORK AT ATWOOD, IL

LOCATION.-- Lat 39°48'23", long 88°28'34", in NE1/4NW1/4 sec.36, T.16 N., R.6 E., Piatt County, Hydrologic Unit 07140201, on left bank at downstream side of bridge, 0.9 mi northwest of Atwood and at mile 9.0.

DRAINAGE AREA.-- 149 mi².

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

DISCHARGE: October 1972 to current year.

STAGE: Water years 1994-2001.

REVISED RECORDS.-- WDR IL-93-1: 1989(M), 1990-92. WDR IL-94-1: 1989.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 644.58 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 4,030 ft³/s, Mar. 5, 1979, gage height, 14.03 ft; maximum gage height, 15.39 ft, Apr. 12, 1994, discharge, 3,390 ft³/s; no flow for many days in most years.

REMARKS FOR CURRENT YEAR.-- Records fair except 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	80	36	87	e41	534	502	64	46	24	16	1.2	e10
2	69	36	80	e44	337	386	58	45	25	13	1.0	e6.0
3	59	33	72	e45	217	315	56	40	24	15	4.6	e3.8
4	53	29	73	e45	164	264	50	37	42	31	4.7	e2.5
5	404	29	73	e46	145	209	49	38	136	22	2.0	e1.8

6	642	35	68	e45	123	171	56	38	1030	14	1.3	e1.3
7	438	66	70	e43	128	150	56	38	1160	10	1.1	e1.0
8	289	72	68	e42	165	137	54	36	804	8.8	.97	e2.0
9	210	140	55	e38	594	120	49	32	563	12	.86	e10
10	168	501	55	e37	848	106	57	33	396	12	.61	e5.0

11	136	405	72	e35	570	101	555	35	295	7.1	.50	e3.3
12	113	282	e100	e36	372	94	475	33	226	4.9	.40	e1.8
13	100	273	e125	e37	268	97	288	28	180	3.7	.34	e1.0
14	92	280	e110	e50	312	79	199	28	148	3.1	.32	e.60
15	89	224	e88	e70	507	77	165	31	128	2.6	.24	.46

16	85	191	e76	e140	438	141	132	32	107	2.3	.31	.37
17	81	154	e70	e110	325	251	110	30	88	2.2	.50	.32
18	74	126	e62	e90	240	222	96	33	78	2.4	.92	.50
19	70	117	e58	e79	205	188	91	37	70	3.0	2.4	.58
20	68	106	e56	e70	173	166	93	34	62	2.5	2.3	.41

21	66	88	e54	e62	136	146	85	36	58	2.1	1.2	.46
22	60	81	e50	e58	128	127	73	35	57	1.8	.99	.54
23	54	78	e48	e54	116	113	69	30	49	1.6	2.6	.39
24	52	74	e46	e48	231	100	64	30	41	1.9	4.6	.13
25	51	80	e45	e47	1570	87	55	28	35	2.3	3.6	.01

26	53	140	e44	e44	1330	81	53	26	30	1.9	e4.0	.00
27	51	155	e43	e42	911	75	53	27	26	1.6	e2.6	.01
28	45	131	e42	e40	682	72	48	25	23	1.4	e1.9	.00
29	40	113	e41	121	---	74	43	22	21	2.0	e1.4	.00
30	39	98	e40	1010	---	71	43	20	19	1.8	e1.2	.00

31	38	---	e41	891	---	67	---	21	---	1.4	e4.0	---

TOTAL	3869	4173	2012	3560	11769	4789	3339	1004	5945	207.4	54.66	54.28
MEAN	125	139	64.9	115	420	154	111	32.4	198	6.69	1.76	1.81
MAX	642	501	125	1010	1570	502	555	46	1160	31	4.7	10
MIN	38	29	40	35	116	67	43	20	19	1.4	.24	.00
CFSM	.84	.93	.44	.77	2.82	1.04	.75	.22	1.33	.04	.01	.01
IN.	.97	1.04	.50	.89	2.94	1.20	.83	.25	1.48	.05	.01	.01

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1973 - 2001, BY WATER YEAR (WY)
MEAN	51.7	104	148	128	205	255	234	259	181	86.8	59.2	24.5
MAX	371	592	452	573	595	957	703	772	738	358	394	272
(WY)	1994	1993	1988	1993	1982	1979	1994	1996	1974	1973	1981	1993
MIN	.000	.82	.46	.16	4.18	33.0	35.1	32.4	2.65	.000	.000	.000
(WY)	1989	2000	1977	1977	1977	2000	2000	2001	1988	1988	1984	1988

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1973 - 2001
ANNUAL TOTAL	28833.8		40776.34
ANNUAL MEAN	78.8		112		144
HIGHEST ANNUAL MEAN					260	1973, 1993
LOWEST ANNUAL MEAN					51.8	2000
HIGHEST DAILY MEAN	1070	May 28	1570	Feb 25	3720	Mar 5 1979
LOWEST DAILY MEAN	1.0 A	Jan 1	.00	Sep 26,28-30	.00	B
ANNUAL SEVEN-DAY MINIMUM	1.4	Jan 14	.02	Sep 24	.00	Aug 28 1976
MAXIMUM PEAK FLOW			1770	Feb 25	4030 C	Mar 5 1979
MAXIMUM PEAK STAGE			12.54	Feb 25	15.39 D	Apr 12 1994
ANNUAL RUNOFF (CFSM)	.53		.75		.97
ANNUAL RUNOFF (INCHES)	7.20		10.18		13.17
10 PERCENT EXCEEDS	174		276		391
50 PERCENT EXCEEDS	42		52		52
90 PERCENT EXCEEDS	2.5		1.3		.79

	A - Estimated.
	B - Many days in most years.
	C - Gage height, 14.03 ft.
	D - Discharge, 3,390 ft³/s.