05590800 DATA: Discharge Tables, 1999

Station list Available data
KASKASKIA RIVER BASIN

05590800 LAKE FORK AT ATWOOD, IL

LOCATION.--Lat 39°48'30", 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.--October 1972 to current year.

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

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

REMARKS.--Records fair except those for estimated daily discharges, which are poor. Gage-height telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	e.06	e.00	e3.3	e1.1	489	e85	62	189	97	50	e3.0	e1.1
2	e.06	e.00	e3.7	e1.3	444	81	57	176	520	48	e2.3	e2.0
3	e.06	e.00	e3.4	e1.5	346	170	54	166	491	45	e1.8	e1.3
4	e.05	e.30	e3.3	e1.8	257	177	55	151	351	39	e1.6	e1.1
5	e.05	e.80	e3.3	e2.3	181	153	48	155	866	35	e1.4	e.90

6	e.05	e.50	3.7	e2.8	166	140	53	141	685	32	e1.2	e.75
7	e.04	e.40	4.4	e2.5	655	114	47	121	437	29	e1.1	e.90
8	e.04	e.35	3.9	e2.3	1070	116	49	105	291	25	e1.0	e1.0
9	e.04	e.30	3.2	e2.2	789	144	100	91	215	22	e.90	e1.0
10	e.04	e12	3.1	e2.1	607	108	90	87	173	21	.78	e.90

11	e.03	e18	e3.0	e2.0	499	96	149	86	152	18	.70	e.80
12	e.03	e15	e2.8	e2.1	568	134	111	85	131	15	2.2	e1.2
13	e.03	e12	e2.7	e2.8	432	204	78	275	131	12	26	e.90
14	e.03	e10	e2.6	e3.0	313	212	71	350	216	10	182	e.70
15	e.02	e8.5	e2.5	e2.8	265	171	249	253	162	8.6	88	e.60

16	e.02	e7.5	e2.3	e3.0	e230	151	836	195	117	7.1	e30	e.55
17	e.02	e6.5	e2.5	e4.0	195	148	824	175	96	6.3	e15	e.50
18	e.02	e5.5	e2.7	e5.5	178	117	671	471	81	6.2	e8.0	e.45
19	e.02	e5.0	e2.9	e8.0	157	90	521	381	74	4.9	e5.0	e.40
20	e.02	e4.5	e3.0	e11	134	88	388	255	70	4.1	e3.5	e.90

21	e.02	e4.0	e3.0	e20	115	93	879	196	71	3.3	e2.8	e.80
22	e.01	e3.5	e3.0	e350	103	81	835	183	85	e3.0	e2.3	e1.5
23	e.01	e3.3	e2.8	1130	108	75	595	170	71	e2.5	e2.0	e1.2
24	e.01	e3.5	e2.5	1060	101	73	428	153	77	e2.1	e3.0	e1.1
25	e.00	e4.0	e2.3	769	97	65	333	129	76	e1.8	e5.0	e1.0

26	e.00	e3.7	e2.0	578	e92	61	284	110	63	e1.5	e4.0	e.95
27	e.00	e3.3	e1.8	487	e87	61	255	96	66	e3.0	e2.5	e.90
28	e.00	e3.0	e1.5	381	e94	62	278	89	91	e10	e1.8	e.85
29	e.00	e3.0	e1.3	256	---	59	256	84	68	e6.5	e1.4	e3.0
30	e.00	e3.1	e1.1	199	---	55	213	81	54	e5.0	e1.1	e10

31	e.00	---	e1.0	230	---	57	---	83	---	e4.0	e.90	---

TOTAL	0.78	141.55	84.6	5524.1	8772	3441	8869	5282	6078	480.9	402.28	39.25
MEAN	.025	4.72	2.73	178	313	111	296	170	203	15.5	13.0	1.31
MAX	.06	18	4.4	1130	1070	212	879	471	866	50	182	10
MIN	.00	.00	1.0	1.1	87	55	47	81	54	1.5	.70	.40
CFSM	.00	.03	.02	1.20	2.10	.74	1.98	1.14	1.36	.10	.09	.01
IN.	.00	.04	.02	1.38	2.19	.86	2.21	1.32	1.52	.12	.10	.01

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1973 - 1999, BY WATER YEAR (WY)
MEAN	50.7	107	157	133	203	267	246	272	181	87.6	62.7	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	1.11	.46	.16	4.18	46.6	42.5	37.5	2.65	.000	.000	.000
(WY)	1989	1977	1977	1977	1977	1992	1986	1988	1988	1988	1984	1988

SUMMARY STATISTICS	FOR 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1973 - 1999
ANNUAL TOTAL	72619.78		39115.46
ANNUAL MEAN	199		107		149
HIGHEST ANNUAL MEAN					260	1973, 1993
LOWEST ANNUAL MEAN					57.0	1980
HIGHEST DAILY MEAN	1880	May 4	1130	Jan 23	3720	Mar 5 1979
LOWEST DAILY MEAN	.00 A	Several days	.00 A	Several days	.00	B
ANNUAL SEVEN-DAY MINIMUM	.00	Oct 25	.00 A	Oct 25	.00	Aug 28 1976
INSTANTANEOUS PEAK FLOW			1270	Jan 23	4030 C	Mar 5 1979
INSTANTANEOUS PEAK STAGE			11.39	Jan 23	15.39 D	Apr 12 1994
ANNUAL RUNOFF (CFSM)	1.34		.72		1.00
ANNUAL RUNOFF (INCHES)	18.13		9.77		13.59
10 PERCENT EXCEEDS	623		321		403
50 PERCENT EXCEEDS	67		12		54
90 PERCENT EXCEEDS	.06		.33		.72

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