05591200 DATA: Discharge Tables, 1998

Station list Available data
KASKASKIA RIVER BASIN

05591200 KASKASKIA RIVER AT COOKS MILLS, IL

LOCATION.--Lat 39°35'01", long 88°24'50", in NW1/4SW1/4 sec.10, T.13 N., R.7 E., Coles County, Hydrologic Unit 07140201, on right upstream side of bridge in Cooks Mills, 3.8 mi downstream from Flat Branch, and at mile 238.1.

DRAINAGE AREA.--473 mi².

PERIOD OF RECORD.--October 1970 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 617.40 ft above sea level. Prior to July 30, 1981, at site 200 ft downstream at same datum.

REMARKS.--Records good except those for estimated daily discharges, which are poor. U.S. Army Corps of Engineers satellite telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	19	22	417	273	416	493	2030	992	688	e950	139	13
2	18	19	600	232	381	466	1590	1470	596	1050	122	12
3	18	21	650	240	346	436	1330	2370	523	915	84	12
4	17	e23	557	229	308	408	1450	3510	471	712	65	12
5	15	e25	415	237	287	378	1740	4580	447	571	56	12

6	14	27	299	374	274	343	1940	4280	423	512	82	11
7	13	27	227	626	256	315	1680	3240	399	465	88	11
8	13	42	188	1140	236	380	1380	2710	368	538	86	9.9
9	16	59	170	1740	220	718	1420	2700	531	887	108	9.6
10	18	59	179	2180	208	1120	1490	2570	818	1010	126	9.2

11	20	55	307	2150	218	1430	1230	2010	1030	808	118	8.2
12	22	47	426	1730	292	1360	962	1520	1480	580	146	7.0
13	20	40	439	1300	390	1100	780	1140	1520	437	107	6.7
14	20	37	380	966	415	921	678	899	2430	351	69	6.9
15	20	37	307	762	380	820	680	828	4060	291	50	7.0

16	28	36	255	629	348	771	769	762	4280	248	41	7.4
17	25	37	224	549	404	834	729	650	4360	216	34	7.6
18	19	38	201	478	630	1210	635	552	3830	189	31	8.7
19	17	35	181	411	882	1850	551	487	3890	166	27	12
20	16	34	163	353	1030	3010	492	521	3210	145	27	12

21	15	36	147	316	1000	3740	459	784	2770	133	25	13
22	14	39	147	292	894	3930	433	1000	2320	127	21	19
23	13	47	196	285	779	3430	417	1440	2770	113	19	19
24	12	46	259	274	681	2550	389	2040	2760	155	18	14
25	13	43	433	260	602	1870	366	2920	2420	204	16	9.2

26	14	39	605	249	540	1460	351	3370	1830	154	15	7.7
27	14	37	703	266	512	1160	334	2890	1320	112	15	10
28	20	36	660	334	500	1520	307	2060	960	89	14	12
29	40	38	544	410	---	2510	328	1480	805	77	14	9.2
30	38	149	436	452	---	3260	675	1070	881	70	14	8.1

31	29	---	354	448	---	2750	---	839	---	78	13	---

TOTAL	590	1230	11069	20185	13429	46543	27615	57684	54190	12353	1790	316.4
MEAN	19.0	41.0	357	651	480	1501	921	1861	1806	398	57.7	10.5
MAX	40	149	703	2180	1030	3930	2030	4580	4360	1050	146	19
MIN	12	19	147	229	208	315	307	487	368	70	13	6.7
CFSM	.04	.09	.75	1.38	1.01	3.17	1.95	3.93	3.82	.84	.12	.02
IN.	.05	.10	.87	1.59	1.06	3.66	2.17	4.54	4.26	.97	.14	.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 1998, BY WATER YEAR (WY)
MEAN	158	331	561	488	615	803	756	811	515	288	188	100
MAX	1189	2205	1626	1862	2028	2565	2116	2809	1864	1166	952	817
(WY)	1994	1993	1988	1974	1982	1979	1994	1996	1974	1973	1981	1993
MIN	12.7	24.4	16.7	14.2	63.4	132	85.5	103	48.0	16.8	14.9	10.5
(WY)	1985	1977	1977	1977	1977	1992	1971	1976	1988	1988	1988	1998

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1971 - 1998
ANNUAL TOTAL	127811.5		246994.4
ANNUAL MEAN	350		677		467
HIGHEST ANNUAL MEAN					838	1973
LOWEST ANNUAL MEAN					185	1980
HIGHEST DAILY MEAN	4340	Feb 28	4580	May 5	9690	Apr 14 1994
LOWEST DAILY MEAN	9.1	Aug 3	6.7	Sep 13	.00	Sep 11 1988
ANNUAL SEVEN-DAY MINIMUM	11	Jul 30	7.3	Sep 11	2.7	Sep 8 1988
INSTANTANEOUS PEAK FLOW			4780	May 5	9950	Apr 13 1994
INSTANTANEOUS PEAK STAGE			13.81	May 5	17.30	Apr 13 1994
INSTANTANEOUS LOW FLOW			6.6	Sep 12,13
ANNUAL RUNOFF (CFSM)	.74		1.43		.99
ANNUAL RUNOFF (INCHES)	10.05		19.43		13.42
10 PERCENT EXCEEDS	977		2020		1250
50 PERCENT EXCEEDS	149		346		184
90 PERCENT EXCEEDS	19		14		20