05585000 DATA: Discharge Tables, 1998

Station list Available data
ILLINOIS RIVER BASIN

05585000 LA MOINE RIVER AT RIPLEY, IL

LOCATION.--Lat 40°01'31", long 90°37'55", 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.--March 1921 to current year. Prior to October 1931, published as Crooked Creek at Ripley.

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

GAGE.--Water-stage recorder 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.

REMARKS.--Records good except those for periods of backwater from the Illinois River, Mar 24-31, Apr. 12-13, 18-29, May 8-22, 31, June 1-4, 25-28, July 5, and 12-17; and 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	33	71	165	128	731	4980	4400	4580	1010	9150	143	71
2	32	64	234	180	747	4610	4860	5200	837	7750	131	67
3	29	56	215	219	1060	2280	5590	5660	714	7240	123	65
4	28	52	189	270	1030	1430	7090	6280	668	3570	119	64
5	26	56	165	571	832	1190	6780	6510	632	1330	233	62

6	25	61	154	847	708	1010	3940	4170	595	1840	760	56
7	24	58	146	1020	616	886	2100	1920	543	2860	409	54
8	35	61	136	1550	542	1890	2430	1730	522	2550	358	50
9	41	96	123	1960	494	5770	3110	1360	1280	1780	296	47
10	39	102	125	1800	462	5570	3170	1070	2040	1900	201	44

11	39	100	123	1240	1510	5470	2850	889	1700	2040	160	42
12	38	87	123	810	3570	5190	2080	838	1410	1300	133	41
13	41	77	129	595	4220	2560	1810	878	1180	709	117	40
14	40	70	129	567	3500	2110	4610	2070	1270	562	106	53
15	39	65	107	490	1960	2200	5240	1690	3990	482	97	71

16	39	61	92	438	1350	1930	5080	1080	4850	427	90	173
17	43	57	100	e420	1310	2800	3830	885	5080	384	85	247
18	44	56	109	e410	1570	6150	2310	653	5510	387	145	158
19	41	56	115	e390	1500	6180	1530	504	6280	360	97	107
20	41	56	112	e380	1280	6840	1230	959	6610	333	85	79

21	40	57	117	e365	1220	8730	1060	1400	6040	308	80	65
22	38	56	119	e355	1080	9510	977	2260	4400	375	75	57
23	37	53	125	e345	937	7930	906	3110	3820	384	72	50
24	37	55	131	e335	845	3070	832	3200	2740	289	69	49
25	38	57	150	e325	768	1650	751	4550	1610	246	65	53

26	41	57	167	e320	716	1340	727	6250	1090	219	62	53
27	42	56	185	311	4860	1210	728	6220	832	198	58	51
28	48	62	180	313	5250	1170	670	6480	682	184	61	50
29	52	61	158	362	---	1230	1070	6320	6480	172	66	51
30	58	70	141	421	---	1100	2090	2250	10100	164	60	63

31	70	---	140	615	---	1460	---	1180	---	156	60	---

TOTAL	1218	1946	4404	18352	44668	109446	83851	92146	84515	49649	4616	2133
MEAN	39.3	64.9	142	592	1595	3531	2795	2972	2817	1602	149	71.1
MAX	70	102	234	1960	5250	9510	7090	6510	10100	9150	760	247
MIN	24	52	92	128	462	886	670	504	522	156	58	40
CFSM	.03	.05	.11	.46	1.23	2.73	2.16	2.30	2.18	1.24	.12	.05
IN.	.04	.06	.13	.53	1.29	3.15	2.41	2.65	2.43	1.43	.13	.06

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 1998, BY WATER YEAR (WY)
MEAN	440	516	499	616	1030	1336	1590	1405	1137	792	349	451
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 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1921 - 1998
ANNUAL TOTAL	265954		496944
ANNUAL MEAN	729		1361		846
HIGHEST ANNUAL MEAN					2452	1993
LOWEST ANNUAL MEAN					50.2	1989
HIGHEST DAILY MEAN	9630	Feb 25	10100	Jun 30	26800	Mar 7 1985
LOWEST DAILY MEAN	15 A	Jan 20, 21	24	Oct 7	.96	Sep 25 1989
ANNUAL SEVEN-DAY MINIMUM	17 A	Jan 15	28	Oct 1	1.8	Sep 22 1989
INSTANTANEOUS PEAK FLOW			10600	Jun 30	28000 B	Mar 7 1985
INSTANTANEOUS PEAK STAGE			23.93	Jun 30	29.15 C	May 18 1995
INSTANTANEOUS LOW FLOW			23	Oct 7	.00	Sep 26 1989
ANNUAL RUNOFF (CFSM)	.56		1.05		.65
ANNUAL RUNOFF (INCHES)	7.65		14.30		8.89
10 PERCENT EXCEEDS	1900		4860		2250
50 PERCENT EXCEEDS	146		410		235
90 PERCENT EXCEEDS	41		50		27

A - Estimated due to backwater from ice.
B - Gage height, 29.07 ft.
C - Observed.