USGS CD-ROM: Current Year Discharge

05469000 HENDERSON CREEK NEAR OQUAWKA, IL

LOCATION.--Lat 41°00'05", long 90°51'15", in NE¼SW¼ sec.28, T.12 N., R.4 W., Henderson County, Hydrologic Unit 07080104, on left bank at downstream side of bridge on State Highway 94, 1 mi south of Bald Bluff, 6.5 mi northeast of Oquawka, and at mile 20.8.

DRAINAGE AREA.--432 mi².

PERIOD OF RECORD.--October 1934 to September 1996. October 1997 to current year. Prior to October 1938, published as Henderson River. Monthly discharge only for some periods, published in WSP 1308.

REVISED RECORDS.--WSP 1208: 1939, 1942-43, 1948. WSP 1308: 1935-38(M), 1941(M). WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 541.21 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to Mar. 4, 1941, nonrecording gage at same site and 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	92	298	522	351	482	1150	3230	1050	355	710	89	48
2	93	302	464	386	706	937	1960	953	346	576	84	46
3	91	288	442	746	671	823	1340	785	330	513	80	44
4	88	262	461	1360	612	733	1120	696	340	471	93	37
5	74	242	425	1950	568	658	943	638	324	438	434	35

6	67	419	389	1500	525	609	848	602	309	418	235	33
7	66	601	366	2520	489	576	792	776	295	396	157	31
8	66	505	349	2050	461	1060	1170	2160	297	420	141	30
9	72	436	345	1530	438	2480	2090	1650	601	392	399	27
10	76	385	342	1230	426	1480	1770	1070	753	375	211	45

11	72	345	325	1010	636	1120	1320	891	602	335	e160	46
12	67	311	296	894	1810	923	1110	814	1080	302	103	47
13	74	291	282	776	1260	859	1140	750	779	281	89	51
14	79	281	262	e660	980	842	1980	676	825	263	80	160
15	79	262	261	e660	838	759	1480	629	2100	249	74	261

16	64	234	270	e570	751	708	1870	614	2670	231	68	156
17	62	211	263	e530	718	1100	1480	563	2480	217	71	91
18	60	208	260	e490	669	3980	1160	528	1590	207	80	75
19	61	207	260	e470	603	4580	988	501	2220	201	100	60
20	60	198	257	e440	567	2580	893	488	1470	187	74	53

21	56	194	252	e440	536	1470	868	489	1260	173	61	50
22	53	183	272	e430	507	1200	915	478	1030	170	57	46
23	58	163	295	423	491	1020	806	494	902	178	53	56
24	124	150	299	408	470	903	741	578	808	173	50	62
25	183	150	360	389	448	835	699	636	729	145	49	85

26	152	155	358	378	455	786	700	540	661	135	47	75
27	256	150	347	365	1570	729	627	492	600	126	47	57
28	343	306	342	365	1670	724	573	458	551	120	58	52
29	351	678	383	399	---	694	616	426	536	113	69	56
30	346	574	337	459	---	647	616	409	873	102	60	113

31	307	---	289	444	---	1910	---	390	---	97	49	---

TOTAL	3692	8989	10375	24623	20357	38875	35845	22224	27716	8714	3422	2028
MEAN	119	300	335	794	727	1254	1195	717	924	281	110	67.6
MAX	351	678	522	2520	1810	4580	3230	2160	2670	710	434	261
MIN	53	150	252	351	426	576	573	390	295	97	47	27
CFSM	.28	.69	.77	1.84	1.68	2.90	2.77	1.66	2.14	.65	.26	.16
IN.	.32	.77	.89	2.12	1.75	3.35	3.09	1.91	2.39	.75	.29	.17

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 1998, BY WATER YEAR (WY)
MEAN	145	171	181	246	362	464	494	461	440	317	149	137
MAX	1560	1189	1176	1265	1466	1752	1742	1829	1960	2967	1675	1222
(WY)	1942	1978	1983	1969	1949	1979	1973	1996	1974	1982	1993	1970
MIN	7.10	9.89	8.38	4.45	13.5	47.4	33.4	26.9	31.3	6.58	9.61	5.65
(WY)	1938	1938	1964	1940	1989	1956	1956	1989	1940	1936	1936	1940

SUMMARY STATISTICS	FOR 1998 WATER YEAR		WATER YEARS 1935 - 1998
ANNUAL TOTAL			206860
ANNUAL MEAN	567		297
HIGHEST ANNUAL MEAN			1002	1993
LOWEST ANNUAL MEAN			50.9	1989
HIGHEST DAILY MEAN	4580	Mar 19	25800	Jul 25 1993
LOWEST DAILY MEAN	27	Sep 9	1.7 A	B
ANNUAL SEVEN-DAY MINIMUM	34	Sep 3	2.1	Sep 17 1940
INSTANTANEOUS PEAK FLOW	5160	Mar 19	34600 C	Jul 8 1982
INSTANTANEOUS PEAK STAGE	24.91	Mar 19	32.65 A	Jul 25 1993
INSTANTANEOUS LOW FLOW	27	Sep 9
ANNUAL RUNOFF (CFSM)	1.31		.69
ANNUAL RUNOFF (INCHES)	17.81		9.34
10 PERCENT EXCEEDS	1240		660
50 PERCENT EXCEEDS	409		126
90 PERCENT EXCEEDS	61		18

A - Observed.
B - Sept. 22, 23, 1940.
C - Gage height, 31.05 ft.