PLATTE RIVER BASIN

06711500 BEAR CREEK AT MOUTH, AT SHERIDAN, CO

LOCATION.--Lat 39°39'08", long 105°01'57", in NW14NW14 sec.5, T.5 S., R.68 W., Arapahoe County, Hydrologic Unit 10190002, on left bank just downstream from bridge on road to Fort Logan Mental Health Center, at Highway Department maintenance building at northwest city limits of Sheridan, 1.3 mi upstream from mouth, and 2.1 mi west of city hall in Englewood.

DRAINAGE AREA.--260 mi2.

PERIOD OF RECORD.--April to November 1914, March 1927 to current year. Monthly discharge only prior to October 1933, published in WSP 1310. Published as "at Sheridan Junction" 1934-41. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06711500

REVISED RECORDS.--WSP 1730: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 5,295 ft above NGVD of 1929, from topographic map. See WSP 1710 or 1730 for history of changes prior to Oct. 9, 1953. Oct. 9, 1953 to Aug. 6, 1969, water-stage recorder at present site at datum 1.0 ft higher.

REMARKS.--Records good except for estimated daily discharges, which are poor. Flow regulated by Bear Creek Lake since July 1979. Storage and diversions upstream from station for irrigation of about 12,000 acres.

COOPERATION.--Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	7.7	8.4	4.6	3.6	4.4	e3.7	35	153	178	49	15	51
2	13	8.7	4.6	3.5	4.1	e4.7	33	146	155	44	13	44
3	3.8	8.8	4.7	3.5	6.0	e3.8	64	144	118	21	12	41
4	3.0	8.5	4.3	3.5	4.0	3.5	104	142	81	19	13	40
5	3.6	8.2	4.1	3.7	3.9	3.2	102	84	91	13	14	40
6	4.3	8.1	4.0	e3.6	3.8	3.2	104	18	96	8.9	11	30
7	4.1	5.0	3.9	3.5	e3.7	3.3	99	16	104	6.8	8.5	28
8	4.3	4.6	3.9	3.6	e3.5	3.3	97	22	83	5.8	8.7	34
9	3.5	4.5	3.9	3.6	3.5	3.2	80	50	69	4.3	10	32
10	3.4	4.8	3.6	3.6	e3.5	3.1	63	94	64	3.5	9.8	27
11	2.5	4.9	3.6	e3.4	3.5	3.2	64	72	52	4.3	9.0	23
12	1.9	5.0	3.7	e3.2	3.5	3.3	78	115	43	4.9	7.4	21
13	2.1	5.3	3.8	3.3	3.5	3.5	142	116	42	5.0	7.4	20
14	2.1	5.4	3.8	3.3	4.2	5.3	269	76	43	3.8	6.7	20
15	2.4	5.4	3.8	3.3	6.2	6.0	296	32	40	3.3	6.8	18
16	2.3	5.3	3.8	3.4	4.0	6.3	308	45	37	6.7	7.2	16
17	2.9	5.1	3.8	3.4	3.9	21	270	125	59	9.9	7.3	13
18	3.0	5.2	3.8	3.4	3.6	19	227	168	59	19	15	13
19	2.5	5.2	3.7	3.4	3.9	17	257	160	46	15	20	15
20	2.8	4.8	3.9	3.3	3.5	24	198	126	49	19	15	15
21	2.7	4.8	3.8	3.5	3.5	31	190	112	41	19	11	15
22	2.9	4.8	3.7	3.6	3.6	30	176	101	31	15	15	14
23	2.7	5.1	3.8	3.6	e3.7	36	166	99	22	13	20	14
24	2.8	5.4	e3.8	3.6	e3.6	30	201	106	22	9.6	27	13
25	3.1	5.3	e3.8	3.5	e3.3	48	164	150	23	10	26	13
26	4.9	4.9	e3.8	3.5	e3.9	52	155	155	28	11	22	11
27	4.8	4.9	3.8	3.6	e3.9	44	151	150	48	11	23	10
28	5.1	4.6	3.8	11	e4.1	36	151	155	49	14	21	10
29	11	4.6	3.8	9.8	---	33	154	151	49	45	24	11
30	6.9	4.6	3.7	13	---	36	161	161	52	43	84	12
31	8.1	---	3.6	12	---	39	---	158	---	24	89	---
TOTAL	130.2	170.2	120.7	139.8	109.8	558.6	4,559	3,402	1,874	480.8	578.8	664
MEAN	4.20	5.67	3.89	4.51	3.92	18.0	152	110	62.5	15.5	18.7	22.1
MAX	13	8.8	4.7	13	6.2	52	308	168	178	49	89	51
MIN	1.9	4.5	3.6	3.2	3.3	3.1	33	16	22	3.3	6.7	10
AC-FT	258	338	239	277	218	1,110	9,040	6,750	3,720	954	1,150	1,320
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1927 - 2003, BY WATER YEAR (WY)
MEAN	23.5	23.2	21.5	19.7	19.1	22.2	54.9	152	103	37.3	38.9	24.9
MAX	151	99.8	61.3	46.3	43.5	94.4	394	859	630	238	255	256
(WY)	(1985)	(1985)	(1985)	(1970)	(1942)	(1960)	(1942)	(1973)	(1949)	(1983)	(1984)	(1938)
MIN	1.52	3.53	3.89	3.85	3.92	5.35	3.33	1.16	1.67	1.77	1.52	1.82
(WY)	(1955)	(1955)	(2003)	(1945)	(2003)	(1935)	(1935)	(1963)	(1966)	(1963)	(2002)	(1956)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1927 - 2003
ANNUAL TOTAL	2,435.45	12,787.9
ANNUAL MEAN	6.67	35.0	45.5
HIGHEST ANNUAL MEAN			157 1983
LOWEST ANNUAL MEAN			6.53 1954
HIGHEST DAILY MEAN	55 May 24	308 Apr 16	4,020 May 7, 1969
LOWEST DAILY MEAN	0.12 Aug 2	1.9 Oct 12	0.00 Jul 13, 1954
ANNUAL SEVEN-DAY MINIMUM	0.28 Jul 29	2.3 Oct 11	0.28 Jul 29, 2002
MAXIMUM PEAK FLOW		334 Apr 19	a8,150 May 7, 1969
MAXIMUM PEAK STAGE		3.98 Apr 19	10.50 May 7, 1969
ANNUAL RUNOFF (AC-FT)	4,830	25,360	32,930
10 PERCENT EXCEEDS	15	117	98
50 PERCENT EXCEEDS	4.9	9.8	17
90 PERCENT EXCEEDS	1.2	3.4	5.9

e Estimated. a Present datum, from floodmarks, from rating curve extended above 3,400 ft3/s.