05466500 DATA: Discharge Tables, 2002

Station list Available data
EDWARDS RIVER BASIN

05466500 EDWARDS RIVER NEAR NEW BOSTON, IL


LOCATION.-- Lat 41°11'13", long 90°58'02" (NAD of 1927), at quarter corner between secs.21 and 28, T.14 N., R.5 W., Mercer County, Hydrologic Unit 07080104, on left bank at downstream side of bridge on State Highway 17, 1.5 mi northeast of New Boston, and at mile 4.6.

DRAINAGE AREA.-- 445 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1934 to current year. Monthly discharge only for some periods, published in WSP 1308.
	STAGE: Water years 1994-2002.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-91. Additional chemical data for water years 1959, 1971-77 are published in Water-Resources Investigations 78-23 and 79-24 as site LF 01.
	SEDIMENT: January 1979 to September 1981.

REVISED RECORDS.-- WSP 1508: 1935-36(M), 1938-40(M), 1941, 1943. 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 529.92 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to Mar. 1, 1941, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 18,000 ft³/s, Apr. 22, 1973, gage height, 23.33 ft; minimum, 1.2 ft³/s, Oct. 19, 20, 1988.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 11,600 mg/L May 29, 1980; minimum daily mean, 9 mg/L Feb. 15, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 75,400 tons Apr. 14, 1981; minimum daily, 1.4 tons Oct. 12, 13, 1979.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.

DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	37	131	104	e87	75	e280	194	638	456	347	142	105
2	37	123	102	e84	73	e250	208	579	427	325	129	100
3	36	115	103	e82	92	e200	254	512	410	307	120	94
4	38	104	102	e84	84	e170	277	454	638	294	115	90
5	75	100	102	e86	113	e210	243	422	2080	278	334	86

6	95	97	104	e88	87	339	230	404	2450	337	417	80
7	84	95	102	e90	81	321	247	391	3300	450	222	76
8	62	94	99	e93	78	503	633	364	1980	359	158	73
9	52	90	95	96	87	1380	1880	377	1030	290	137	70
10	52	87	92	99	108	1110	2000	379	806	264	124	68

11	56	86	90	103	160	674	1390	554	959	374	114	66
12	57	86	92	102	192	561	953	2320	1100	414	109	64
13	57	82	99	100	181	487	772	2670	2390	282	124	62
14	57	85	121	97	184	437	666	3870	2710	246	117	62
15	69	86	134	102	193	392	604	3590	2910	226	103	61

16	75	85	122	87	212	347	537	1800	2200	212	102	59
17	64	80	132	84	237	311	482	1260	1150	199	100	58
18	58	78	131	85	230	300	443	1010	891	191	91	57
19	54	75	123	81	229	285	416	865	751	647	199	57
20	52	73	116	89	327	272	391	742	677	310	189	60

21	52	73	108	79	878	257	383	658	612	228	140	59
22	58	73	114	83	741	229	412	605	563	197	110	57
23	394	74	e140	84	548	229	381	586	524	179	961	55
24	612	87	e150	91	471	241	364	589	489	165	556	53
25	375	116	e120	80	412	225	471	656	463	156	297	53

26	312	133	e110	84	357	210	487	1130	461	151	204	51
27	223	114	e106	84	312	206	456	775	478	307	167	50
28	181	106	e103	84	e270	203	915	648	471	194	144	50
29	156	107	e100	82	---	210	975	581	405	249	130	50
30	144	103	e96	80	---	222	718	545	371	201	120	48

31	136	---	e91	72	---	204	---	495	---	160	111	---

TOTAL	3810	2838	3403	2722	7012	11265	18382	30469	34152	8539	6086	1974
MEAN	122.9	94.60	109.8	87.81	250.4	363.4	612.7	982.9	1138	275.5	196.3	65.80
MAX	612	133	150	103	878	1380	2000	3870	3300	647	961	105
MIN	36	73	90	72	73	170	194	364	371	151	91	48
CFSM	0.28	0.21	0.25	0.20	0.56	0.82	1.38	2.21	2.56	0.62	0.44	0.15
IN.	0.32	0.24	0.28	0.23	0.59	0.94	1.54	2.55	2.85	0.71	0.51	0.17

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 2002, BY WATER YEAR (WY)
MEAN	141.8	169.8	175.3	242.8	373.1	498.5	553.0	488.8	450.3	303.1	162.7	125.6
MAX	1216	1192	1469	1133	1512	1791	2307	1762	1829	2258	1508	1006
(WY)	1999	1978	1983	1969	2001	1993	1973	1996	1974	1982	1993	1970
MIN	5.47	11.2	8.86	6.39	11.9	66.0	33.4	33.0	35.8	11.7	10.3	7.29
(WY)	1989	1938	1964	1977	1989	1956	1956	1989	1977	1936	1988	1988

SUMMARY STATISTICS	FOR 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1935 - 2002
ANNUAL TOTAL	191288		130652
ANNUAL MEAN	524.1		358.0		306.4
HIGHEST ANNUAL MEAN					965	1993
LOWEST ANNUAL MEAN					76.6	1940
HIGHEST DAILY MEAN	4120	Feb 11	3870	May 14	14000	Apr 22 1973
LOWEST DAILY MEAN	35	Sep 16,17		36 Oct 3	1.3	Oct 19 1988
ANNUAL SEVEN-DAY MINIMUM	38	Sep 28	51	Sep 24	2.4	Oct 18 1988
MAXIMUM PEAK FLOW			4300	May 15	18000	Apr 22 1973
MAXIMUM PEAK STAGE			22.11	May 15	23.33	Apr 22 1973
INSTANTANEOUS LOW FLOW			35	Oct 3,4	1.2	A
ANNUAL RUNOFF (CFSM)	1.18		0.80		0.69
ANNUAL RUNOFF (INCHES)	15.99		10.92		9.35
10 PERCENT EXCEEDS	1370		746		703
50 PERCENT EXCEEDS	155		165		131
90 PERCENT EXCEEDS	54		65		21

A - Oct. 19-20, 1998.