05467000 DATA: Discharge Tables, 2002

Station list Available data
POPE CREEK BASIN

05467000 POPE CREEK NEAR KEITHSBURG, IL


LOCATION.-- Lat 41°07'44", long 90°55'09" (NAD of 1927), 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;1998-2002.

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 NGVD of 1929 (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 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	10	48	36	e27	37	e128	108	316	214	140	65	46
2	10	43	34	e26	40	e120	118	287	202	128	56	43
3	9.9	39	32	27	34	e100	121	254	194	119	50	39
4	11	36	32	27	37	e83	112	231	472	111	47	35
5	45	36	33	28	36	e130	108	216	1580	103	137	33

6	32	34	32	30	26	e150	105	210	952	255	79	31
7	21	34	34	32	26	155	131	202	465	270	54	29
8	17	33	32	32	28	246	405	188	367	130	46	27
9	16	32	30	33	30	506	1110	212	317	106	41	26
10	19	32	30	34	45	397	628	197	286	97	38	25

11	20	30	29	34	60	290	456	496	454	133	35	24
12	19	30	30	34	84	255	378	4420	481	194	36	23
13	18	30	35	34	67	232	328	3130	2430	119	49	22
14	22	30	37	34	76	e205	296	754	2850	95	37	21
15	23	29	44	31	90	184	272	548	692	83	32	20

16	20	29	40	31	90	170	247	465	488	76	31	19
17	18	27	39	27	98	157	224	417	398	69	29	19
18	19	27	37	27	93	152	209	365	341	65	27	19
19	17	27	36	28	99	146	197	330	301	336	151	19
20	16	26	34	27	213	141	185	301	272	143	115	21

21	16	27	33	28	395	136	203	279	245	90	57	20
22	44	26	40	29	281	125	221	262	223	74	44	20
23	574	26	e44	31	226	126	201	276	205	65	2060	18
24	240	37	e48	31	199	128	214	284	190	59	505	17
25	169	45	e52	28	176	124	287	372	179	55	205	16

26	111	42	e43	31	159	117	252	602	204	53	132	15
27	83	39	e40	31	143	113	281	385	246	516	99	15
28	69	35	e38	32	e128	112	556	317	200	179	80	15
29	59	34	e35	31	---	118	429	281	168	153	67	14
30	54	35	e30	27	---	117	350	254	152	101	57	14

31	51	---	e28	20	---	109	---	232	---	77	51	---

TOTAL	1852.9	998	1117	922	3016	5272	8732	17083	15768	4194	4512	705
MEAN	59.77	33.27	36.03	29.74	107.7	170.1	291.1	551.1	525.6	135.3	145.5	23.50
MAX	574	48	52	34	395	506	1110	4420	2850	516	2060	46
MIN	9.9	26	28	20	26	83	105	188	152	53	27	14
CFSM	0.34	0.19	0.21	0.17	0.62	0.98	1.67	3.17	3.02	0.78	0.84	0.14
IN.	0.40	0.21	0.24	0.20	0.64	1.13	1.87	3.65	3.37	0.90	0.96	0.15

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 2002, BY WATER YEAR (WY)
MEAN	56.38	67.09	72.80	91.68	165.0	180.4	202.8	194.1	189.4	124.1	65.94	54.27
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 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1935 - 2002
ANNUAL TOTAL	82226.9		64171.9
ANNUAL MEAN	225.3		175.8		123.2
HIGHEST ANNUAL MEAN					399	1993
LOWEST ANNUAL MEAN					25.8	1940
HIGHEST DAILY MEAN	4860	Feb 25	4420	May 12	7030	Oct 18 1998
LOWEST DAILY MEAN	9.9	Oct 3	9.9	Oct 3	0.53	Aug 6 1989
ANNUAL SEVEN-DAY MINIMUM	11	Sep 28	15	Sep 24	0.78	Aug 1 1989
MAXIMUM PEAK FLOW			5120	May 12	8900 A	Apr 22 1973
MAXIMUM PEAK STAGE			28.13	May 12	29.25 B	Feb 9 2001
INSTANTANEOUS LOW FLOW			9.1	Oct 3,4
ANNUAL RUNOFF (CFSM)	1.29		1.01		0.71
ANNUAL RUNOFF (INCHES)	17.58		13.72		9.62
10 PERCENT EXCEEDS	527		366		270
50 PERCENT EXCEEDS	56		65		48
90 PERCENT EXCEEDS	17		22		7.0

	A - Gage height, 27.88 ft., from graph based on gage readings at site 1,000 ft. upstream at same datum.
	B - Ice jam, estimated discharge, 3,250 ft³/s.