05585000 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05585000 LA MOINE RIVER AT RIPLEY, IL

LOCATION.-- Lat 40°01'29", long 90°37'54", in SW1/4NE1/4 sec.33, T.1 N., R.2 W., Brown County, Hydrologic Unit 07130010, on deck of bridge on old U.S. Highway 24, 600 ft downstream from bridge on new U.S. Highway 24, 0.2 mi east of Ripley, 2 mi upstream from Town Branch, and at mile 12.3.

DRAINAGE AREA.-- 1,293 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: March 1921 to current year. Prior to October 1931, published as Crooked Creek at Ripley.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

SEDIMENT: Water years 1981 and 1995-97.

CHEMICAL: Water years 1975-91.

SPECIFIC CONDUCTANCE: Water year 1979.

WATER TEMPERATURE: Water year 1979.

REVISED RECORDS.-- WSP 975: 1936. WSP 1208: 1925, 1929, 1933. WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 431.1 ft above sea level. Prior to July 28, 1926, nonrecording gage at site 200 ft upstream at datum 0.02 ft higher. July 28, 1926 to Jan. 11, 1935, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 28,000 ft³/s, Mar. 7, 1985, gage height, 29.07 ft; maximum gage height, 29.15 ft, May 18, 1995, observed; no flow for part of Sept. 26, 1989.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 7,140 mg/L, June 21, 1981; minimum daily mean, 5 mg/L, Dec. 4, 5, 1996.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 212,000 tons, May 8, 1996; minimum daily, 0.87 tons, Jan. 20, 1997.

REMARKS FOR CURRENT YEAR.-- Records fair except those for Oct. 1-Aug. 29 and those for estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	55	46	102	e47	e4600	6400	496	534	1500	396	89	225
2	44	47	100	e49	e3800	3300	479	492	2110	366	92	258
3	37	48	95	e51	e2200	1420	451	466	2540	337	106	205
4	35	46	90	e53	e1400	1200	416	449	2600	318	98	160
5	39	44	81	e55	e1200	1060	390	423	3500	332	267	131

6	46	53	e57	e57	e1000	907	761	423	7190	336	320	115
7	74	67	e59	e58	e900	788	1520	868	7470	285	173	104
8	113	75	e60	e57	e1200	718	1120	1620	6490	253	121	95
9	121	107	e63	e56	e3000	677	807	1240	6020	234	98	92
10	102	164	e70	e55	e4500	642	863	904	5240	220	85	95

11	81	213	e64	e54	5690	618	1650	718	2160	202	75	93
12	67	225	e56	e52	6280	619	4020	741	1330	188	71	115
13	61	227	e65	e53	7860	618	4300	872	1070	172	69	124
14	58	186	e70	e55	8330	609	2610	956	900	159	67	95
15	63	160	e66	e58	6430	847	1550	1090	1470	146	60	77

16	57	146	e63	e62	2870	3790	1330	1340	1640	136	57	67
17	54	132	e61	e70	1830	4420	1190	1160	1170	130	54	61
18	54	120	e59	e80	1250	3820	970	2080	858	129	53	91
19	52	111	e56	e75	988	2570	840	3390	731	211	53	128
20	50	105	e53	e70	1040	1780	787	2260	662	294	55	322

21	47	88	e51	e64	912	1390	826	1550	635	532	55	325
22	43	68	e48	e58	795	1160	1060	2830	1200	387	278	267
23	42	81	e45	e54	703	997	1080	2930	1620	248	6890	210
24	41	86	e44	e50	3050	873	1150	1630	1200	178	7150	221
25	41	99	e42	e48	7010	769	867	1120	838	147	6930	179

26	42	99	e41	e46	6620	676	727	997	677	135	6600	144
27	43	99	e41	e44	6360	610	675	1010	582	131	4270	114
28	45	103	e42	e43	6690	571	648	1080	515	121	780	95
29	43	108	e43	e500	---	552	632	908	463	112	440	82
30	43	101	e44	e2000	---	536	592	763	426	102	316	73

31	45	---	e46	e4300	---	517	---	895	---	95	249	---

TOTAL	1738	3254	1877	8374	98508	45454	34807	37739	64807	7032	36021	4363
MEAN	56.1	108	60.5	270	3518	1466	1160	1217	2160	227	1162	145
MAX	121	227	102	4300	8330	6400	4300	3390	7470	532	7150	325
MIN	35	44	41	43	703	517	390	423	426	95	53	61
CFSM	.04	.08	.05	.21	2.72	1.13	.90	.94	1.67	.18	.90	.11
IN.	.05	.09	.05	.24	2.83	1.31	1.00	1.09	1.86	.20	1.04	.13

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 2001, BY WATER YEAR (WY)
MEAN	431	514	492	626	1057	1321	1578	1387	1148	787	354	438
MAX	5747	5949	5060	3338	3899	5785	5678	9257	6336	5975	1591	5726
(WY)	1987	1986	1983	1946	1985	1985	1944	1995	1990	1993	1932	1961
MIN	7.06	9.08	7.92	13.2	9.96	61.4	116	21.3	42.5	16.1	11.4	5.13
(WY)	1957	1990	1990	1954	1989	1941	1934	1934	1936	1936	1936	1988

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1921 - 2001
ANNUAL TOTAL	124991		343974
ANNUAL MEAN	342		942		843
HIGHEST ANNUAL MEAN					2452	1993
LOWEST ANNUAL MEAN					50.2	1989
HIGHEST DAILY MEAN	4860	Jun 29	8330 A	Feb 14	26800	Mar 7 1985
LOWEST DAILY MEAN	24	Sep 13	35	Oct 4	.96	Sep 25 1989
ANNUAL SEVEN-DAY MINIMUM	25	Sep 9	42	Oct 22	1.8	Sep 22 1989
MAXIMUM PEAK FLOW			8620 A	Feb 14	28000 B	Mar 7 1985
MAXIMUM PEAK STAGE			23.43 A	Feb 14	29.15 C	May 18 1995
INSTANTANEOUS LOW FLOW			33	Oct 4	.00	Sep 26 1989
ANNUAL RUNOFF (CFSM)	.26		.73		.65
ANNUAL RUNOFF (INCHES)	3.60		9.90		8.86
10 PERCENT EXCEEDS	611		2850		2240
50 PERCENT EXCEEDS	144		227		235
90 PERCENT EXCEEDS	42		49		28

	A - Backwater from Illinois River.
	B - Gage height, 29.07 ft.
	C - Observed.