BLUE RIVER BASIN

09050700 BLUE RIVER BELOW DILLON, CO

LOCATION.--Lat 39°37'32", long 106°03'57", in SE14SE14 sec.12, T.5 S., R.78 W., Summit County, Hydrologic Unit 14010002, on right bank 0.3 mi downstream from Dillon Dam, 0.1 mi upstream from Straight Creek, and 1.1 mi west of Dillon.

DRAINAGE AREA.--335 mi2.

PERIOD OF RECORD.--January 1960 to current year. Statistical summary computed for 1963 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09050700.

GAGE.--Water-stage recorder with satellite telemetry, and concrete control. Elevation of gage is 8,760 ft above NGVD of 1929, from topographic map.

REMARKS.--No estimated daily discharges. Records good. Flow regulated since Sept. 3, 1963, by Dillon Reservoir, 0.3 mi upstream (station 09050600). Natural flow of stream affected by transmountain diversions, transbasin diversions, and diversions upstream from station for irrigation of about 400 acres of hay meadows. 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	54	54	54	56	77	94	75	50	52	51	113	110
2	54	54	54	56	77	94	75	50	52	51	113	110
3	54	54	54	56	77	94	75	50	52	86	113	110
4	54	54	55	55	77	93	61	50	53	110	113	110
5	54	54	54	54	77	94	50	50	54	110	113	110
6	54	54	54	55	77	94	50	50	54	110	113	110
7	54	54	54	55	81	95	50	50	54	110	113	110
8	54	54	54	54	82	94	50	50	54	110	113	110
9	54	54	54	54	82	94	50	51	54	110	113	110
10	54	54	54	54	82	93	50	52	52	148	113	110
11	54	54	54	54	82	83	50	51	50	273	113	86
12	54	54	54	54	82	78	50	51	50	393	113	74
13	54	54	54	55	82	77	50	52	50	350	112	110
14	54	54	54	54	84	70	50	52	51	167	113	110
15	54	54	54	55	82	52	50	52	51	110	113	110
16	54	54	54	55	82	50	50	52	52	110	113	110
17	54	54	54	54	82	50	50	52	51	164	113	110
18	54	54	54	54	82	50	50	52	50	348	113	110
19	54	54	54	54	82	50	50	52	50	395	113	110
20	54	54	54	54	82	50	50	52	50	344	113	110
21	54	54	54	54	82	50	50	52	50	122	113	110
22	54	54	54	54	82	50	50	53	51	50	113	110
23	54	54	54	70	82	50	50	54	51	50	113	111
24	54	54	54	81	82	61	50	53	50	86	113	113
25	54	54	54	82	82	80	50	52	50	109	113	113
26	54	54	54	82	82	81	50	52	50	110	113	113
27	54	54	54	82	90	81	50	51	50	110	113	112
28	54	54	54	79	94	81	50	50	50	111	113	112
29	54	54	54	77	---	81	50	50	50	113	113	113
30	54	54	54	77	---	77	50	50	50	112	111	113
31	54	---	55	77	---	75	---	51	---	113	109	---
TOTAL	1,674	1,620	1,676	1,907	2,287	2,316	1,586	1,589	1,538	4,736	3,496	3,260
MEAN	54.0	54.0	54.1	61.5	81.7	74.7	52.9	51.3	51.3	153	113	109
MAX	54	54	55	82	94	95	75	54	54	395	113	113
MIN	54	54	54	54	77	50	50	50	50	50	109	74
AC-FT	3,320	3,210	3,320	3,780	4,540	4,590	3,150	3,150	3,050	9,390	6,930	6,470
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 2003, BY WATER YEAR (WY)
MEAN	120	99.1	85.2	77.0	79.2	83.3	124	301	693	425	244	158
MAX	305	268	193	158	155	269	742	1,101	1,813	1,476	999	348
(WY)	(2000)	(1985)	(1985)	(1966)	(1997)	(1996)	(1996)	(1984)	(1984)	(1984)	(1984)	(1983)
MIN	0.000	23.2	44.6	31.0	47.6	48.6	39.3	24.0	32.3	51.5	51.7	18.6
(WY)	(1964)	(1964)	(1989)	(1984)	(1986)	(1986)	(1965)	(1965)	(1965)	(1981)	(1981)	(1963)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1963 - 2003
ANNUAL TOTAL	21,746	27,685
ANNUAL MEAN	59.6	75.8	208
HIGHEST ANNUAL MEAN			538 1984
LOWEST ANNUAL MEAN			65.5 1981
HIGHEST DAILY MEAN	96 Jan 3	395 Jul 19	1,940 May 24, 1984
LOWEST DAILY MEAN	53 Jul 14	50 Mar 16	a0.00 Sep 4, 1963
ANNUAL SEVEN-DAY MINIMUM	54 Jul 8	50 Mar 16	0.00 Sep 4, 1963
MAXIMUM PEAK FLOW		399 Jul 18	2,010 May 25, 1984
MAXIMUM PEAK STAGE		1.78 Jul 18	b3.88 May 25, 1984
ANNUAL RUNOFF (AC-FT)	43,130	54,910	150,400
10 PERCENT EXCEEDS	77	113	455
50 PERCENT EXCEEDS	54	54	103
90 PERCENT EXCEEDS	54	50	51

a Also occurred Sept 5 to Nov 29, 1963. b Maximum gage height for period of record, 3.95 ft, Jun 22, 1983.