PLATTE RIVER BASIN

06710605 BEAR CREEK ABOVE BEAR CREEK LAKE NEAR MORRISON, CO

LOCATION.--Lat 39°39'08", long 105°10'23", in NW14NE14 sec.1, T.5 S. R.70 W., Jefferson County, Hydrologic Unit 10190002, on right bank, 0.9 mi downstream from Strain Gulch, 1.0 mi east of Morrison, and 1.1 mi downstream from Mt. Vernon Creek.

DRAINAGE AREA.--176 mi2.

PERIOD OF RECORD.--May 1986 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06710605

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage 5,645 ft above NGVD of 1929, from topographic map. Prior to Apr. 21, 1989, at datum 3.37 ft higher.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural flow of stream affected by diversions to Harriman Canal, and Ward Canal, 0.7 mi upstream from gage. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

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	2.2	2.0	0.10	e0.14	e0.25	e0.20	38	53	154	45	6.1	18
2	14	1.9	0.26	0.14	0.15	e0.22	109	30	119	27	8.6	12
3	6.2	0.67	0.31	0.11	0.22	e0.20	101	16	79	13	8.0	15
4	1.1	0.44	0.31	0.14	0.17	e0.21	35	9.1	55	11	14	24
5	0.75	1.0	0.20	0.15	e0.14	e0.22	3.8	6.6	69	4.2	6.3	14
6	0.57	1.4	0.17	0.17	e0.15	e0.26	4.4	5.8	65	4.0	5.4	8.6
7	0.76	1.2	0.11	0.13	e0.14	1.1	5.1	3.5	70	2.9	6.4	16
8	3.0	1.0	0.12	e0.18	0.15	2.1	3.9	7.0	54	2.9	8.6	33
9	4.7	0.69	0.16	e0.20	e0.14	1.1	11	10	45	2.6	8.0	22
10	4.3	0.60	0.27	e0.21	e0.13	0.91	41	51	45	4.1	8.3	19
11	3.6	1.1	0.27	e0.17	e0.14	0.76	45	62	40	4.1	6.1	17
12	3.1	1.1	0.24	e0.12	e0.15	1.2	89	34	38	3.9	6.2	14
13	3.0	1.4	0.26	e0.11	0.22	2.3	159	18	36	3.6	7.0	13
14	2.0	0.89	e0.22	e0.14	0.19	0.40	184	21	37	3.1	7.1	15
15	3.7	0.43	e0.18	e0.16	0.17	0.45	206	38	30	8.3	8.1	14
16	3.8	0.34	e0.14	e0.18	0.20	0.37	186	80	48	13	6.8	11
17	4.1	0.50	e0.12	e0.19	0.17	0.59	144	106	56	14	9.2	9.2
18	5.4	0.40	e0.10	0.18	0.19	47	115	125	39	10	15	11
19	5.1	0.35	e0.08	e0.15	e0.19	76	100	92	32	18	13	12
20	4.6	0.45	e0.11	e0.12	e0.19	15	79	71	34	18	6.9	13
21	4.5	0.44	e0.12	e0.12	e0.19	0.85	61	61	25	16	5.6	11
22	4.9	0.40	e0.12	0.16	e0.20	0.61	50	61	14	11	7.4	11
23	5.3	0.38	e0.13	e0.23	e0.18	0.78	47	64	14	8.3	13	11
24	5.4	0.49	e0.13	0.23	e0.20	0.74	51	91	16	10	15	9.4
25	5.8	0.33	e0.14	0.26	e0.19	1.4	47	128	16	10	8.5	9.3
26	5.5	0.28	e0.15	0.16	e0.20	3.5	51	122	39	9.9	8.8	8.4
27	5.5	0.26	e0.14	0.19	e0.19	7.8	58	125	52	10	7.7	8.2
28	5.0	0.17	e0.13	e0.26	e0.20	2.5	61	137	48	13	7.1	8.5
29	5.6	0.12	e0.15	0.20	---	2.3	70	131	49	31	8.0	8.6
30	3.8	0.12	e0.15	0.22	---	2.1	67	145	51	17	51	8.8
31	0.94	---	e0.14	0.29	---	2.3	---	136	---	7.6	39	---
TOTAL	128.22	20.85	5.23	5.41	5.00	175.47	2,222.2	2,040.0	1,469	356.5	336.2	405.0
MEAN	4.14	0.69	0.17	0.17	0.18	5.66	74.1	65.8	49.0	11.5	10.8	13.5
MAX	14	2.0	0.31	0.29	0.25	76	206	145	154	45	51	33
MIN	0.57	0.12	0.08	0.11	0.13	0.20	3.8	3.5	14	2.6	5.4	8.2
AC-FT	254	41	10	11	9.9	348	4,410	4,050	2,910	707	667	803
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 2003, BY WATER YEAR (WY)
MEAN	15.8	15.7	16.6	15.2	14.5	17.2	49.0	119	104	41.4	34.2	19.4
MAX	38.8	44.9	33.8	32.3	25.1	47.0	191	382	512	216	127	58.7
(WY)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1995)	(1995)	(1999)	(1997)
MIN	4.14	0.38	0.17	0.17	0.18	1.26	2.83	2.40	1.51	1.21	2.27	1.76
(WY)	(2003)	(1990)	(2003)	(2003)	(2003)	(1995)	(1989)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1986 - 2003
ANNUAL TOTAL	1,170.09	7,169.08
ANNUAL MEAN	3.21	19.6	39.0
HIGHEST ANNUAL MEAN			96.1 1995
LOWEST ANNUAL MEAN			5.14 2002
HIGHEST DAILY MEAN	15 Jun 5	206 Apr 15	684 Jun 18, 1995
LOWEST DAILY MEAN	0.07 Sep 3	e0.08 Dec 19	0.07 Sep 3, 2002
ANNUAL SEVEN-DAY MINIMUM	0.11 Dec 17	e0.11 Dec 17	0.11 Dec 17, 2002
MAXIMUM PEAK FLOW		324 Apr 16	841 Jun 9, 1995
MAXIMUM PEAK STAGE		5.69 Apr 16	6.45 Jun 9, 1995
ANNUAL RUNOFF (AC-FT)	2,320	14,220	28,260
10 PERCENT EXCEEDS	8.5	61	83
50 PERCENT EXCEEDS	1.7	5.1	18
90 PERCENT EXCEEDS	0.26	0.15	2.4

e Estimated.