COLORADO RIVER MAIN STEM

09085100 COLORADO RIVER BELOW GLENWOOD SPRINGS, CO

LOCATION.--Lat 39°33'18", long 107°20'13", in NW14NW14 sec.9, T.6 S., R.89 W., Garfield County, Hydrologic Unit 14010005, on left bank 0.6 mi downstream from Roaring Fork River and 1.0 mi northwest of Post Office in Glenwood Springs.

DRAINAGE AREA.--6,013 mi2.

PERIOD OF RECORD.--October 1966 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09085100

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 5,700.75 ft above NGVD of 1929, Colorado State Highway Department benchmark.

REMARKS.--No estimated daily discharges. Records good. Natural flow of stream affected by transmountain diversions, storage reservoirs, power development, and diversions for irrigation of 110,000 acres.

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	1,300	1,500	1,170	969	947	963	1,000	2,390	16,700	3,520	1,930	2,000
2	1,260	1,530	1,240	931	987	1,000	1,090	2,210	17,100	3,450	1,930	1,900
3	1,330	1,500	1,210	932	985	972	1,170	2,090	14,000	3,410	1,940	1,860
4	1,340	1,420	1,100	993	898	1,020	1,210	2,230	11,900	3,300	2,000	1,930
5	1,320	1,410	1,140	980	916	1,040	1,110	2,300	10,300	3,120	2,070	2,010
6	1,280	1,340	1,120	987	838	1,020	1,040	2,100	8,700	2,960	2,010	2,040
7	1,250	1,290	1,050	893	748	1,050	1,020	1,900	7,650	2,810	1,980	2,210
8	1,230	1,370	1,030	862	684	1,010	967	1,860	6,890	2,720	1,990	2,410
9	1,200	1,590	841	848	788	1,020	1,010	1,890	6,820	2,640	1,990	2,400
10	1,230	1,590	962	933	868	1,040	1,150	1,970	7,130	2,610	1,960	2,530
11	1,230	1,490	918	974	912	1,080	1,160	2,150	6,990	2,430	1,960	2,660
12	1,240	1,440	909	964	957	1,170	1,370	2,000	7,080	2,340	1,910	2,320
13	1,210	1,360	1,030	929	1,030	1,210	1,500	1,980	7,050	2,400	1,900	2,100
14	1,180	1,400	962	948	1,050	1,370	1,690	2,220	6,680	2,340	1,890	2,040
15	1,180	1,420	951	945	1,070	1,350	1,950	3,030	6,790	2,250	2,010	1,950
16	1,180	1,360	942	848	1,020	1,310	1,900	3,880	6,980	2,260	1,940	1,890
17	1,180	1,320	1,010	922	1,020	1,230	1,680	5,080	6,350	2,300	2,040	1,860
18	1,200	1,280	1,050	864	974	1,250	1,620	6,170	6,060	2,290	2,270	1,950
19	1,170	1,200	955	827	946	1,160	1,550	6,590	5,900	2,260	2,570	2,090
20	1,160	1,130	844	870	901	1,110	1,440	6,380	5,990	2,220	2,310	2,110
21	1,140	1,120	967	915	963	1,040	1,370	6,440	5,730	2,190	2,080	2,100
22	1,150	1,140	945	936	987	1,080	1,430	6,920	5,450	2,280	2,040	2,080
23	1,220	1,110	804	961	941	1,200	1,690	7,950	5,300	2,080	2,000	2,080
24	1,320	1,110	814	949	922	1,300	1,750	8,840	4,980	1,930	2,100	2,090
25	1,340	1,150	871	943	1,020	1,350	1,700	9,850	4,460	1,890	2,120	2,100
26	1,310	1,090	840	921	992	1,200	1,810	10,200	4,160	2,100	2,060	2,250
27	1,310	870	837	924	980	1,220	2,230	11,000	4,070	2,580	2,030	2,220
28	1,380	906	890	944	978	1,060	2,540	12,800	3,970	2,510	2,040	2,180
29	1,340	1,090	965	915	---	948	2,700	14,100	3,880	2,250	2,000	2,170
30	1,360	1,080	993	915	---	939	2,600	15,500	3,710	2,120	1,930	2,140
31	1,420	---	884	949	---	977	---	15,800	---	1,960	1,990	---
TOTAL	38,960	38,606	30,244	28,691	26,322	34,689	46,447	179,820	218,770	77,520	62,990	63,670
MEAN	1,257	1,287	976	926	940	1,119	1,548	5,801	7,292	2,501	2,032	2,122
MAX	1,420	1,590	1,240	993	1,070	1,370	2,700	15,800	17,100	3,520	2,570	2,660
MIN	1,140	870	804	827	684	939	967	1,860	3,710	1,890	1,890	1,860
AC-FT	77,280	76,580	59,990	56,910	52,210	68,810	92,130	356,700	433,900	153,800	124,900	126,300
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2003, BY WATER YEAR (WY)
MEAN	2,109	1,874	1,574	1,484	1,466	1,685	2,666	6,867	10,040	5,446	2,848	2,267
MAX	3,082	2,703	2,487	2,192	2,209	2,814	5,113	15,570	20,710	15,180	5,975	3,716
(WY)	(1985)	(1985)	(1985)	(1985)	(1986)	(1986)	(1996)	(1984)	(1984)	(1995)	(1984)	(1984)
MIN	1,257	1,186	976	926	940	1,018	1,548	2,146	2,364	1,594	1,464	1,255
(WY)	(2003)	(1978)	(2003)	(2003)	(2003)	(1977)	(2003)	(1977)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1967 - 2003
ANNUAL TOTAL	537,176	846,729
ANNUAL MEAN	1,472	2,320	3,365
HIGHEST ANNUAL MEAN			6,276 1984
LOWEST ANNUAL MEAN			1,523 2002
HIGHEST DAILY MEAN	4,170 Jun 1	17,100 Jun 2	30,200 May 25, 1984
LOWEST DAILY MEAN	804 Dec 23	684 Feb 8	684 Feb 8, 2003
ANNUAL SEVEN-DAY MINIMUM	857 Dec 22	820 Feb 4	820 Feb 4, 2003
MAXIMUM PEAK FLOW		18,500 Jun 2	31,500 May 25, 1984
MAXIMUM PEAK STAGE		9.39 Jun 2	12.49 May 25, 1984
ANNUAL RUNOFF (AC-FT)	1,065,000	1,679,000	2,438,000
10 PERCENT EXCEEDS	2,080	5,360	7,610
50 PERCENT EXCEEDS	1,320	1,380	2,070
90 PERCENT EXCEEDS	967	927	1,280