05584500 DATA: Discharge Tables, 1998

Station list Available data
ILLINOIS RIVER BASIN

05584500 LA MOINE RIVER AT COLMAR, IL

LOCATION.--Lat 40°19'45", long 90°53'55", in SE1/4SW1/4 sec.18, T.4 N., R.4 W., McDonough County, Hydrologic Unit 07130010, on right bank at downstream side of bridge on State Highway 61, 0.2 mi downstream from a railroad bridge, 1 mi southwest of Colmar, 1.8 mi upstream from Troublesome Creek, and at mile 61.8.

DRAINAGE AREA.--655 mi².

PERIOD OF RECORD.--October 1944 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 491.53 ft above sea level. Prior to July 13, 1945, 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. Water temperature and specific conductance continuously recorded at station for the National Water-Quality Assessment Program.

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	10	35	207	e135	457	2170	3800	3980	590	3560	69	23
2	10	34	183	162	754	1280	3720	4350	503	1430	64	23
3	10	34	153	318	745	956	2330	3960	462	723	59	23
4	9.9	33	137	542	599	814	2230	2120	422	634	110	19
5	22	32	128	790	522	687	1480	1190	399	536	661	18

6	24	38	116	846	456	596	1120	1180	378	971	183	15
7	23	67	95	1210	402	544	1070	1240	340	1060	117	13
8	22	79	87	1450	368	1580	1680	1020	358	926	98	11
9	21	77	85	1400	346	3600	1990	813	1300	977	93	9.8
10	22	63	82	973	332	3410	1840	675	1170	947	79	9.2

11	23	53	85	648	1190	2060	1430	587	785	766	63	9.4
12	22	46	92	565	2960	1250	1110	547	838	450	53	9.2
13	23	44	77	539	2140	1050	1040	1270	668	366	46	9.1
14	24	41	58	453	1360	1240	2170	1120	920	319	41	44
15	28	38	60	e430	966	1220	2160	677	4060	281	38	226

16	23	37	72	e390	797	1000	2080	603	5010	251	35	155
17	23	37	71	e360	834	2310	1420	533	5110	224	33	78
18	23	39	71	e340	958	4320	1050	444	3830	205	33	43
19	21	38	77	e320	799	5340	860	407	2490	196	31	29
20	20	34	76	e300	784	4490	756	566	1680	184	28	21

21	20	36	80	e280	714	2530	689	939	1340	168	27	17
22	19	37	83	e270	618	1480	649	968	1470	160	24	17
23	19	37	94	e260	562	1120	608	1150	1590	158	21	16
24	20	38	119	e250	521	925	547	2720	1080	143	20	16
25	22	39	133	e245	476	804	515	4070	794	129	18	17

26	30	35	160	243	466	748	540	5120	643	115	16	18
27	31	34	151	241	2850	677	502	2850	547	107	15	22
28	41	42	138	237	3330	695	425	1320	488	102	15	24
29	49	95	e130	306	---	681	842	894	2320	94	15	32
30	46	216	e125	480	---	593	1870	797	4840	87	24	87

31	39	---	e120	528	---	2540	---	702	---	78	19	---

TOTAL	739.9	1508	3345	15511	27306	52710	42523	48812	46425	16347	2148	1053.7
MEAN	23.9	50.3	108	500	975	1700	1417	1575	1548	527	69.3	35.1
MAX	49	216	207	1450	3330	5340	3800	5120	5110	3560	661	226
MIN	9.9	32	58	135	332	544	425	407	340	78	15	9.1
CFSM	.04	.08	.16	.76	1.49	2.60	2.16	2.40	2.36	.81	.11	.05
IN.	.04	.09	.19	.88	1.55	2.99	2.42	2.77	2.64	.93	.12	.06

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1998, BY WATER YEAR (WY)
MEAN	266	261	269	341	513	736	829	759	681	469	163	271
MAX	3502	2693	2686	2077	2199	3734	3193	4471	3081	4194	899	4024
(WY)	1987	1986	1983	1974	1949	1985	1973	1995	1974	1993	1993	1961
MIN	.67	2.61	2.54	3.33	5.70	30.5	22.9	20.8	21.1	3.89	2.82	1.75
(WY)	1989	1990	1990	1956	1989	1956	1956	1956	1988	1988	1988	1988

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1945 - 1998
ANNUAL TOTAL	159667.1		258428.6
ANNUAL MEAN	437		708		462
HIGHEST ANNUAL MEAN					1347	1993
LOWEST ANNUAL MEAN					23.1	1989
HIGHEST DAILY MEAN	9840	Feb 23	5340	Mar 19	35600	Mar 5 1985
LOWEST DAILY MEAN	7.4 A	Jan 19, 20	9.1	Sep 13	.00	Oct 19 1988
ANNUAL SEVEN-DAY MINIMUM	8.2	Jan 14	10	Sep 7	.12	Oct 16 1988
INSTANTANEOUS PEAK FLOW			5550	May 26	38900 B	Mar 5 1985
INSTANTANEOUS PEAK STAGE			21.58	May 26	27.03 C	Jan 3 1965
INSTANTANEOUS LOW FLOW			8.7	Sep 12
ANNUAL RUNOFF (CFSM)	.67		1.08		.71
ANNUAL RUNOFF (INCHES)	9.07		14.68		9.59
10 PERCENT EXCEEDS	926		2070		1010
50 PERCENT EXCEEDS	101		319		122
90 PERCENT EXCEEDS	21		22		9.6

A - Estimated due to backwater from ice.
B - Gage height, 26.61 ft.
C - Ice jam.