USGS CD-ROM: Current Year Discharge

05440000 KISHWAUKEE RIVER NEAR PERRYVILLE, IL

LOCATION.--Lat 42°11'45", long 88°59'55", in NE¼NE¼ sec.21, T.43 N., R.2 E., Winnebago County, Hydrologic Unit 07090006, on left bank at upstream side of bridge on Blackhawk Road, 1.4 mi downstream from South Branch Kishwaukee River, 2 mi southwest of Perryville, 7.1 mi upstream from Killbuck Creek, and at mile 9.6.

DRAINAGE AREA.--1,099 mi².

PERIOD OF RECORD.--October 1939 to current year.

REVISED RECORDS.--WSP 1175: 1941(P), 1942. WSP 1508: 1941, 1949. WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 692.13 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to Apr. 30, 1949, nonrecording gage at same site and datum.

REMARKS.--Records good except those for Aug. 7-20, which are fair, and those for estimated daily discharges, which are poor. Gage-height telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in January 1938 reached a stage of 23.85 ft, from information by the U.S. Army Corps of Engineers.

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	159	202	259	e190	451	858	2850	1440	864	1440	291	257
2	160	197	262	216	607	786	3020	1390	797	1100	281	240
3	161	196	254	264	865	753	2650	1640	753	900	276	232
4	162	193	254	513	916	737	2130	1500	719	1040	305	223
5	157	198	246	922	866	717	1760	1380	710	1400	e370	220

6	150	222	238	1160	778	702	1510	1300	698	1160	e640	209
7	146	226	229	e1500	723	685	1380	1910	674	e1500	e480	273
8	147	239	226	e1800	704	842	1590	4390	655	1370	457	270
9	153	228	225	1380	696	1660	2560	5360	686	1200	397	244
10	154	217	235	1040	680	1600	3020	5180	799	956	352	224

11	153	206	237	821	767	1370	2680	4040	1210	802	323	208
12	155	202	229	828	1570	1210	2150	2970	1840	709	303	200
13	182	204	219	e700	1890	1090	1880	2690	2040	652	286	193
14	183	201	198	e600	1550	963	1920	2360	1670	614	273	254
15	198	204	206	e700	1270	868	1700	2070	1410	576	268	364

16	184	203	230	e650	1110	797	3260	1860	1200	543	262	414
17	179	191	210	e600	1030	796	4490	1570	1020	514	253	329
18	174	203	212	e560	1000	1260	4380	1390	979	485	248	281
19	176	206	212	e520	938	2340	3530	1260	1440	544	240	259
20	172	205	210	e500	870	2570	2870	1970	1560	542	235	245

21	169	206	210	e480	810	2200	3250	1930	1330	493	235	231
22	166	206	213	e470	767	1750	3410	1400	1080	482	237	226
23	171	202	213	e460	736	1480	3130	1230	912	464	234	221
24	175	185	219	e450	728	1300	2580	1250	836	431	255	221
25	180	210	225	e440	720	1160	2130	1220	764	400	298	222

26	192	205	225	431	704	1080	2060	1070	3530	378	440	223
27	216	201	199	421	765	994	2080	944	4960	358	323	218
28	235	208	217	419	884	949	1820	970	3580	345	351	214
29	232	217	233	419	---	922	1630	1150	3290	327	380	216
30	217	247	203	432	---	867	1520	1090	2410	309	334	219

31	208	---	e195	435	---	1330	---	953	---	300	282	---

TOTAL	5466	6230	6943	20321	25395	36636	74940	60877	44416	22334	9909	7350
MEAN	176	208	224	656	907	1182	2498	1964	1481	720	320	245
MAX	235	247	262	1800	1890	2570	4490	5360	4960	1500	640	414
MIN	146	185	195	190	451	685	1380	944	655	300	234	193
CFSM	.16	.19	.20	.60	.83	1.08	2.27	1.79	1.35	.66	.29	.22
IN.	.19	.21	.24	.69	.86	1.24	2.54	2.06	1.50	.76	.34	.25

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 1998, BY WATER YEAR (WY)
MEAN	455	573	609	627	867	1434	1285	1019	884	606	453	446
MAX	2309	2881	3230	2265	2963	5395	4267	3355	3827	3263	2853	3577
(WY)	1973	1986	1983	1969	1997	1979	1993	1996	1993	1993	1987	1972
MIN	75.5	95.8	83.5	68.8	98.8	230	280	212	214	135	97.4	78.9
(WY)	1957	1957	1964	1959	1940	1956	1963	1949	1959	1941	1964	1946

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1940 - 1998
ANNUAL TOTAL	293636		320817
ANNUAL MEAN	804		879		771
HIGHEST ANNUAL MEAN					1955	1993
LOWEST ANNUAL MEAN					227	1977
HIGHEST DAILY MEAN	16400	Feb 22	5360	May 9	16700	Jul 19 1996
LOWEST DAILY MEAN	146	Oct 7	146	Oct 7	49	Oct 10 1956
ANNUAL SEVEN-DAY MINIMUM	151	Oct 6	151	Oct 6	52	Sep 11 1964
INSTANTANEOUS PEAK FLOW			5480	May 9	24200	Jul 18 1996
INSTANTANEOUS PEAK STAGE			11.37	May 9	23.54	Jul 18 1996
INSTANTANEOUS LOW FLOW			144	Oct 6-9	46	A
ANNUAL RUNOFF (CFSM)	.73		.80		.70
ANNUAL RUNOFF (INCHES)	9.94		10.86		9.53
10 PERCENT EXCEEDS	1340		2050		1680
50 PERCENT EXCEEDS	437		520		422
90 PERCENT EXCEEDS	180		199		125

A - Oct. 6, 7, 10, 1956.