05570000 DATA: Discharge Tables, 1999

Station list Available data
ILLINOIS RIVER BASIN

05570000 SPOON RIVER AT SEVILLE, IL

LOCATION.--Lat 40°29'08", long 90°20'34", in NE1/4NW1/4 sec.24, T.6 N., R.1 E., Fulton County, Hydrologic Unit 07130005, on right bank at downstream side of bridge on unimproved road, 100 ft upstream from a railroad bridge, 0.1 mi northeast of Seville, 0.47 mi downstream from State Highway 95, 0.55 mi downstream from Shaw Creek, and at mile 38.7.

DRAINAGE AREA.--1,636 mi².

PERIOD OF RECORD.--July 1914 to current year. Monthly discharge only for some periods, published in WSP 1308.

REVISED RECORDS.--WSP 1208: 1917, 1920, 1922, 1924, 1926-27, 1929(M). WSP 1308: 1919(M), 1936(M), 1938(M), 1942(M), 1945(M). WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 467.04 ft above sea level. Prior to May 9, 1935, nonrecording gage at site 100 ft downstream at same datum. May 9, 1935, to June 30, 1976, nonrecording gage at present site and datum. July 1, 1976, to July 7, 1983, at site 0.47 mi upstream at same datum.

REMARKS.--Records good except those for estimated daily discharges, which are poor. U.S. Army Corps of Engineers satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of 1883 reached a stage of about 33.0 ft, backwater from ice, discharge not determined.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	140	837	804	e580	3450	1070	793	3760	1370	3310	337	148
2	148	838	780	e700	3590	1010	794	2930	2110	3400	292	140
3	159	994	730	e760	4010	954	825	2540	3010	1810	263	131
4	162	1070	718	e720	3810	917	884	2290	2100	1330	244	126
5	257	1100	713	e680	3140	938	952	2170	2440	1120	227	121

6	572	992	909	e800	2620	959	821	2060	2510	991	212	119
7	894	913	1810	e820	2390	937	822	1860	1950	890	214	110
8	661	873	3370	e760	2220	868	827	1720	1630	806	257	103
9	471	862	2930	e700	2050	842	1170	1570	2260	743	283	98
10	374	1390	2150	e660	1910	908	2080	1450	4590	699	232	93

11	318	3830	1750	e620	1940	997	1710	1370	4600	648	200	88
12	288	4380	1550	e580	2530	988	1350	1390	2540	594	316	89
13	261	2960	1440	e560	2690	932	1160	3870	2310	553	517	90
14	238	2230	1350	e550	2190	939	1050	8120	3340	521	459	89
15	226	1920	1250	e540	1930	980	1230	9190	4440	492	366	86

16	219	1730	1170	e535	1820	1160	4670	10400	2950	470	281	84
17	300	1560	1130	e525	1710	1500	7440	9800	2020	442	205	84
18	1270	1430	1090	e515	1560	1770	6820	8300	1740	417	172	82
19	4260	1310	1040	e510	1450	1790	4810	6910	1550	593	159	83
20	4770	1220	997	e500	1360	1510	3440	4070	1430	3080	153	86

21	3150	1140	920	e600	1280	1330	2880	3110	1330	1380	151	94
22	1780	1080	811	e2000	1190	1240	2580	2960	1240	956	146	84
23	1370	1010	e660	e8000	1160	1140	2670	2930	1200	705	145	81
24	1160	982	e760	e10000	1160	1060	3850	2570	1760	529	426	79
25	1030	933	e850	10500	1140	1000	3430	2240	1560	678	900	77

26	938	887	e900	10400	1100	940	2680	1980	1340	437	481	75
27	880	869	e910	10600	1100	891	2420	1790	1150	447	346	73
28	988	829	e870	7620	1090	872	2890	1660	2470	482	256	573
29	1010	800	e700	7110	---	871	4940	1560	1800	855	210	2770
30	1050	801	e600	5220	---	849	5360	1470	1250	586	178	1300

31	923	---	e480	3750	---	806	---	1400	---	409	160	---

TOTAL	30267	41770	36142	88415	57590	32968	77348	109440	65990	30373	8788	7256
MEAN	976	1392	1166	2852	2057	1063	2578	3530	2200	980	283	242
MAX	4770	4380	3370	10600	4010	1790	7440	10400	4600	3400	900	2770
MIN	140	800	480	500	1090	806	793	1370	1150	409	145	73
CFSM	.60	.85	.71	1.74	1.26	.65	1.58	2.16	1.34	.60	.17	.15
IN.	.69	.95	.82	2.01	1.31	.75	1.76	2.49	1.50	.69	.20	.16

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1914 - 1999, BY WATER YEAR (WY)
MEAN	546	620	674	1040	1419	1668	1870	1719	1581	1051	530	620
MAX	5356	4386	5745	5500	4387	6524	6752	8015	7908	7839	4767	8440
(WY)	1987	1986	1983	1916	1949	1985	1983	1995	1974	1993	1924	1926
MIN	26.5	24.9	26.8	17.7	44.2	188	89.7	29.1	88.0	30.1	6.46	17.9
(WY)	1957	1915	1915	1940	1989	1956	1956	1934	1934	1936	1914	1988

SUMMARY STATISTICS	FOR 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1914 - 1999
ANNUAL TOTAL	794262		586347
ANNUAL MEAN	2176		1606		1109
HIGHEST ANNUAL MEAN					3578	1993
LOWEST ANNUAL MEAN					168	1989
HIGHEST DAILY MEAN	13000	Mar 20	10600	Jan 27	32800	Aug 23 1924
LOWEST DAILY MEAN	116	Sep 13	73	Sep 27	3.8	Jul 31 1914
ANNUAL SEVEN-DAY MINIMUM	125	Sep 7	80	Sep 21	4.2	Aug 23 1914
INSTANTANEOUS PEAK FLOW			11100	Jan 27	37300 A	Aug 22 1924
INSTANTANEOUS PEAK STAGE			21.69	Jan 27	33.10 B	Jul 26 1993
INSTANTANEOUS LOW FLOW			72	Sep 27	3.8 C	D
ANNUAL RUNOFF (CFSM)	1.33		.98		.68
ANNUAL RUNOFF (INCHES)	18.06		13.33		9.21
10 PERCENT EXCEEDS	4850		3440		2570
50 PERCENT EXCEEDS	1670		997		481
90 PERCENT EXCEEDS	224		161		62

A - Gage height, 30.77 ft, from graph based on gage readings.
B - Discharge, 34,700 ft³/s.
C - Observed.
D - July 31, and Aug. 27-29, 1914.