05590800 DATA: Discharge Tables, 2000

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 1994-2000.

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.

REMARKS FOR CURRENT YEAR.-- Records 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	e5.0	e.80	.62	e1.0	e2.0	44	24	41	271	74	23	23
2	e2.5	e1.5	.53	e1.2	e1.7	41	25	43	199	63	16	17
3	e3.0	e1.2	.41	e1.5	e1.6	39	27	37	152	55	13	13
4	e2.5	e.90	1.1	e2.0	e1.5	31	25	36	127	47	12	9.8
5	e9.0	e.75	2.4	e2.7	e1.4	28	22	36	147	413	9.4	6.3

6	e4.5	e.65	2.2	e3.5	e1.3	26	23	34	187	485	11	4.8
7	e3.5	e.55	e1.5	e3.5	e1.2	24	24	34	141	273	8.0	4.5
8	e3.0	e.48	e1.1	e3.0	e1.5	23	22	35	115	164	5.6	4.2
9	e3.5	e.43	e.80	e2.8	e2.5	25	18	36	97	114	4.6	3.9
10	e7.0	e.38	e1.2	e2.5	e6.0	23	17	42	85	84	3.6	29

11	e12	e.35	e1.1	e2.2	e15	20	18	40	80	679	3.0	53
12	e7.5	e.34	e.85	e2.0	e12	20	18	40	91	662	e2.5	37
13	e5.5	e.32	e.70	e1.8	e10	20	16	84	168	404	e2.1	24
14	4.2	e.30	e2.0	e1.6	e8.5	23	17	110	156	252	e1.9	19
15	3.8	e.29	e7.0	e1.5	e7.5	24	21	74	126	165	e1.8	16

16	e3.3	e.27	e6.0	e1.4	e7.0	23	19	59	94	112	e1.7	13
17	e2.9	e.25	e5.0	e1.3	e6.5	20	32	54	72	81	e1.6	11
18	e2.5	e.24	e4.0	e1.2	e25	17	49	51	57	62	e3.0	9.2
19	e3.0	e.22	e3.0	e1.2	151	19	43	50	49	50	e2.5	8.2
20	e3.5	e.20	e2.5	e1.7	103	43	41	60	53	41	e2.2	7.6

21	e3.0	e.20	e2.0	e4.0	69	88	41	50	338	35	e2.0	6.4
22	e2.5	e.70	e1.5	e3.0	59	62	41	44	361	28	4.5	6.9
23	e2.1	2.9	e1.3	e2.5	53	50	42	43	219	23	7.8	10
24	e1.8	2.5	e1.5	e2.3	49	47	52	40	306	19	5.1	36
25	e1.6	1.6	e1.3	e2.1	46	44	89	34	325	16	2.8	153

26	e1.4	1.8	e1.1	e2.0	45	37	75	30	236	13	9.2	309
27	e1.3	1.7	e.90	e1.9	45	38	63	149	197	11	189	236
28	e1.1	1.0	e.80	e1.8	44	38	57	1070	147	9.6	164	168
29	e1.0	.98	e.70	e1.7	43	32	49	938	113	8.0	93	123
30	e.95	.71	e.70	e3.0	---	27	42	586	90	21	55	97

31	e.85	---	e.80	e2.4	---	26	---	397	---	27	34	---

TOTAL	109.30	24.51	56.61	66.3	819.2	1022	1052	4377	4799	4490.6	694.9	1458.8
MEAN	3.53	.82	1.83	2.14	28.2	33.0	35.1	141	160	145	22.4	48.6
MAX	12	2.9	7.0	4.0	151	88	89	1070	361	679	189	309
MIN	.85	.20	.41	1.0	1.2	17	16	30	49	8.0	1.6	3.9
CFSM	.02	.01	.01	.01	.19	.22	.24	.95	1.07	.97	.15	.33
IN.	.03	.01	.01	.02	.20	.26	.26	1.09	1.20	1.12	.17	.36

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1973 - 2000, BY WATER YEAR (WY)
MEAN	49.1	103	151	129	197	259	239	268	181	89.7	61.3	25.3
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	37.5	2.65	.000	.000	.000
(WY)	1989	2000	1977	1977	1977	2000	2000	1988	1988	1988	1984	1988

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1973 - 2000
ANNUAL TOTAL	39078.95		18970.22
ANNUAL MEAN	107		51.8		146
HIGHEST ANNUAL MEAN					260	1973, 1993
LOWEST ANNUAL MEAN					51.8	2000
HIGHEST DAILY MEAN	1130	Jan 23	1070	May 28	3720	Mar 5 1979
LOWEST DAILY MEAN	.20 A	Nov 20,21	.20 A	Nov 20,21	.00	B
ANNUAL SEVEN-DAY MINIMUM	.24	Nov 15	.24	Nov 15	.00	Aug 28 1976
INSTANTANEOUS PEAK FLOW			1270	May 28	4030 C	Mar 5 1979
INSTANTANEOUS PEAK STAGE			11.69	May 28	15.39 D	Apr 12 1994
ANNUAL RUNOFF (CFSM)	.72		.35		.98
ANNUAL RUNOFF (INCHES)	9.76		4.74		13.28
10 PERCENT EXCEEDS	321		143		397
50 PERCENT EXCEEDS	10		16		52
90 PERCENT EXCEEDS	.80		1.0		.75

A - Estimated, but may have been less during periods of estimated discharges Oct. thru Jan.
B - Many days in most years.
C - Gage height, 14.03 ft.
D - Discharge, 3,390 ft³/s.