USGS CD-ROM: Current Year Discharge

05447500 GREEN RIVER NEAR GENESEO, IL

LOCATION.--Lat 41°29'20", long 90°09'30", in NE¼SW¼ sec.4, T.17 N., R.3 E., Henry County, Hydrologic Unit 07090007, on right bank at upstream side of bridge on State Highway 82, 1.4 mi upstream from Geneseo Creek, 2.4 mi north of Geneseo, and at mile 14.9.

DRAINAGE AREA.--1,003 mi².

PERIOD OF RECORD.--March 1936 to current year.

REVISED RECORDS.--WSP 875: 1938. WSP 1508: 1937, 1939-41(M), 1946(P), 1947-49. WDR IL-74-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 577.66 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to Oct. 1, 1939, nonrecording gage at present site at datum 27.00 ft. lower. Oct. 1, 1939 to Apr. 3, 1940, nonrecording gage at present site at datum 3.0 ft. higher. Apr. 3, 1940 to Sept. 30, 1997, recording gage at present site at datum 3.0 ft. higher.

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	148	186	e250	680	1280	2010	1400	782	2280	367	221
2	91	144	174	325	992	1170	2220	1340	790	1590	349	212
3	91	139	180	505	1120	1100	1940	1270	759	1280	336	206
4	89	135	185	970	1080	1040	1660	1190	743	1500	459	200
5	89	136	168	1250	1010	981	1460	1140	736	1550	1010	190

6	89	159	117	1220	934	932	1340	1270	723	1570	636	186
7	89	199	187	1830	860	896	1260	1800	702	1880	538	187
8	89	191	183	1790	815	1160	1500	4060	687	1920	656	186
9	90	181	175	1500	782	2320	2540	4560	1040	1660	531	178
10	92	169	172	1230	755	2040	3180	3550	1360	1260	446	176

11	90	165	211	1140	974	1640	2830	2880	2270	1060	399	172
12	89	163	185	e1000	2290	1380	2260	2310	3390	935	365	168
13	91	157	126	e810	2020	1290	2030	2000	2750	847	340	166
14	105	153	120	e620	1600	1220	2650	2130	2160	783	324	216
15	102	162	156	e700	1370	1130	2560	1870	2110	727	310	353

16	99	149	186	e790	1270	1060	3190	1650	2900	681	293	326
17	98	118	166	e760	1220	1120	3640	1460	2430	637	288	273
18	99	151	186	e680	1160	3250	3100	1310	1780	603	338	244
19	99	169	175	e640	1090	3790	2540	1280	2960	571	331	228
20	101	157	175	e610	1020	3260	2160	1450	2940	558	287	217

21	101	154	175	593	976	2500	2080	1260	2200	598	267	365
22	97	153	181	e580	933	1950	2500	1150	1770	1150	252	255
23	97	139	191	e560	894	1640	2550	1080	1540	777	242	228
24	103	131	196	e550	886	1440	2120	1050	1640	580	231	224
25	115	155	161	e540	860	1330	1830	1030	1410	528	224	225

26	116	153	243	540	848	1250	1690	968	1220	495	215	223
27	128	147	178	537	1070	1190	1620	918	1100	469	208	212
28	140	146	341	547	1390	1160	1640	881	1120	445	267	205
29	142	181	244	558	---	1120	1530	876	1430	423	322	212
30	144	179	189	581	---	1060	1460	853	3100	398	270	240

31	143	---	e210	600	---	1280	---	825	---	383	240	---

TOTAL	3200	4683	5722	24806	30899	47979	65090	50811	50542	30138	11341	6694
MEAN	103	156	185	800	1104	1548	2170	1639	1685	972	366	223
MAX	144	199	341	1830	2290	3790	3640	4560	3390	2280	1010	365
MIN	89	118	117	250	680	896	1260	825	687	383	208	166
CFSM	.10	.16	.18	.80	1.10	1.54	2.16	1.63	1.68	.97	.36	.22
IN.	.12	.17	.21	.92	1.15	1.78	2.41	1.88	1.87	1.12	.42	.25

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1936 - 1998, BY WATER YEAR (WY)
MEAN	363	449	463	536	738	1046	1070	973	871	558	393	349
MAX	2043	1790	1905	1976	2070	3244	3562	3500	3568	2946	1845	1777
(WY)	1942	1978	1983	1946	1949	1979	1973	1974	1974	1990	1987	1970
MIN	48.8	60.4	57.1	26.5	68.8	198	174	140	127	62.9	61.0	46.5
(WY)	1954	1954	1959	1977	1940	1956	1956	1989	1977	1940	1988	1940

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1936 - 1998
ANNUAL TOTAL	190815		331905
ANNUAL MEAN	523		909		652
HIGHEST ANNUAL MEAN					1579	1993
LOWEST ANNUAL MEAN					159	1940
HIGHEST DAILY MEAN	7230	Feb 22	4560	May 9	10100	Mar 19 1979
LOWEST DAILY MEAN	87	Aug 6-9	89	A	22	Jan 18 1977
ANNUAL SEVEN-DAY MINIMUM	89	Oct 3	89	Oct 3	24	Jan 17 1977
INSTANTANEOUS PEAK FLOW			4800	May 9	12100 B	Jun 22 1974
INSTANTANEOUS PEAK STAGE			13.09	May 9	18.59 C	Jan 23 1969
INSTANTANEOUS LOW FLOW			73	Nov 17
ANNUAL RUNOFF (CFSM)	.52		.91		.65
ANNUAL RUNOFF (INCHES)	7.08		12.31		8.83
10 PERCENT EXCEEDS	893		2140		1460
50 PERCENT EXCEEDS	227		680		385
90 PERCENT EXCEEDS	101		140		95

A - Oct. 4-8, 12.
B - Gage height, 16.75ft, datum then in use.
C - Backwater from ice, datum then in use.