05467000 DATA: Discharge Tables, 2001

Station list Available data
POPE CREEK BASIN

05467000 POPE CREEK NEAR KEITHSBURG, IL

LOCATION.-- Lat 41°07'44", long 90°55'09", in SE1/4SE1/4 sec.11, T.13 N., R.5 W., Mercer County, Hydrologic Unit 07080104, on right bank at downstream side of bridge on County Road 900 E, 1.8 mi northeast of Keithsburg, and at mile 3.0.

DRAINAGE AREA.-- 174 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1934 to September 1986. Monthly discharge only for some periods, published in WSP 1308. Seven-month period (March to September), water years 1987-90. October 1990 to September 1996. October 1997 to current year.

STAGE: Water years 1994-1996; 1998-2001.

REVISED RECORDS.-- WSP 1508: 1935-37(M), 1938, 1939-43(M). WDR IL-81-1: 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 524.07 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to Aug. 1, 1975, nonrecording gage and crest-stage gage at site 1,000 ft upstream at same datum. Aug. 1, 1975 to Aug. 24, 1981, water-stage recorder at site 500 ft downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,900 ft³/s, Apr. 22, 1973, gage height, 27.88 ft, from graph based on gage readings at site 1,000 ft upstream at same datum; maximum gage height, 29.25 ft, Feb. 9, 2001, estimated discharge, 3,250 ft³/s, ice jam; minimum daily discharge, 0.53 ft³/s, Aug. 6, 1989.

REMARKS FOR CURRENT YEAR.-- Records good except those for Apr. 22 to May 3 and May 7-16, which are fair, and those for estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	23	25	28	e20	e200	e310	147	206	795	109	31	12
2	21	25	27	e21	e160	e270	138	196	579	102	124	11
3	20	25	20	e21	e140	e250	128	182	447	113	76	11
4	39	24	23	e21	e125	e240	119	340	385	180	43	11
5	45	24	19	e21	e110	e220	130	370	1900	107	35	10

6	47	28	e22	e21	e105	e210	151	570	2810	93	30	11
7	40	37	e24	e21	e100	200	384	679	930	88	27	23
8	36	38	e24	e21	e130	188	258	459	582	85	25	15
9	34	41	e23	e20	e2000	175	220	348	467	83	24	17
10	32	44	e21	e20	e2500	167	202	300	397	79	22	22

11	31	49	e20	20	e2200	179	200	1160	349	72	21	18
12	30	43	e22	21	1820	182	308	780	312	68	19	13
13	29	38	e25	23	1010	185	306	522	286	64	19	12
14	28	36	e29	27	602	175	251	579	282	61	18	12
15	27	34	e28	38	558	209	508	619	277	58	18	11

16	28	34	e26	e46	408	527	528	425	252	56	20	11
17	27	32	e25	e50	313	527	407	2660	223	54	18	10
18	26	27	e24	e43	e270	500	329	1170	206	56	23	19
19	26	28	e23	e40	e240	450	291	713	191	61	23	65
20	25	23	e22	e36	e220	392	267	636	182	56	21	44

21	25	30	e21	e33	e210	338	247	1690	212	51	18	67
22	26	32	e20	e31	e190	298	588	724	217	51	18	27
23	26	27	e20	29	e180	267	749	539	179	49	17	23
24	25	26	e19	e27	1750	241	418	462	162	45	17	20
25	25	29	e19	e26	4860	217	369	407	150	57	18	17

26	26	32	e19	e25	2240	199	330	513	141	45	17	15
27	25	32	e19	e24	565	189	285	690	133	41	15	14
28	25	25	e19	e23	396	180	255	474	125	40	14	12
29	25	34	e20	e30	---	173	233	388	120	39	13	11
30	25	30	e20	e130	---	163	214	339	115	36	13	11

31	25	---	e20	e240	---	154	---	490	---	33	13	---

TOTAL	892	952	691	1169	23602	7975	8960	19630	13406	2132	810	575
MEAN	28.8	31.7	22.3	37.7	843	257	299	633	447	68.8	26.1	19.2
MAX	47	49	29	240	4860	527	749	2660	2810	180	124	67
MIN	20	23	19	20	100	154	119	182	115	33	13	10
CFSM	.17	.18	.13	.22	4.84	1.48	1.72	3.64	2.57	.40	.15	.11
IN.	.19	.20	.15	.25	5.05	1.71	1.92	4.20	2.87	.46	.17	.12

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 2001, BY WATER YEAR (WY)
MEAN	56.3	67.6	73.4	92.7	166	181	201	189	184	124	64.7	54.7
MAX	698	520	576	461	843	640	822	717	1020	1303	693	471
(WY)	1999	1999	1983	1974	2001	1993	1973	1996	1990	1982	1993	1980
MIN	2.40	2.96	2.63	2.74	5.29	19.1	11.4	7.68	10.9	1.24	2.75	1.82
(WY)	1964	1957	1965	1977	1964	1956	1956	1989	1936	1989	1989	1988

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1935 - 2001
ANNUAL TOTAL	35855		80794
ANNUAL MEAN	98.0		221		122
HIGHEST ANNUAL MEAN					399	1993
LOWEST ANNUAL MEAN					25.8	1940
HIGHEST DAILY MEAN	1420	Jun 25	4860	Feb 25	7030	Oct 18 1998
LOWEST DAILY MEAN	15	A	10	Sep 5,17	.53	Aug 6 1989
ANNUAL SEVEN-DAY MINIMUM	16	Sep 5	11	Aug 31	.78	Aug 1 1989
MAXIMUM PEAK FLOW			6360 B	Feb 24	8900 C	Apr 22 1973
MAXIMUM PEAK STAGE			29.25 D	Feb 9	29.25 D	Feb 9 2001
INSTANTANEOUS LOW FLOW			9.5	Sep 5,6
ANNUAL RUNOFF (CFSM)	.56		1.27		.70
ANNUAL RUNOFF (INCHES)	7.67		17.27		9.55
10 PERCENT EXCEEDS	228		524		265
50 PERCENT EXCEEDS	42		47		47
90 PERCENT EXCEEDS	20		19		6.7

	A- Jan. 28-29, estimated due to backwater from ice; and Sept. 8-10.
	B- Gage height, 28.48 ft.
	C- Gage height, 27.88 ft., from graph based on gage readings at site
	1,000 ft. upstream at same datum.
	D- Ice jam, estimated discharge, 3,250 ft³/s.