COLORADO RIVER MAIN STEM

09070500 COLORADO RIVER NEAR DOTSERO, CO

LOCATION.--Lat 39°38'38", long 107°04'38", in NW14 SE14 sec.6, T.5 S., R.86 W., Eagle County, Hydrologic Unit- 14010001, on left bank about 500 ft south of Interstate Highway 70, 1.5 mi west of Dotsero, and 1.5 mi downstream from Eagle River.

DRAINAGE AREA.--4,394 mi2.

PERIOD OF RECORD.--October 1940 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09070500

GAGE.--Water-stage recorder with satellite telemetry and crest-stage gages. Elevation of gage is 6,130 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by transmountain diversions, storage reservoirs, power development, diversions for irrigation of about 68,000 acres upstream from station, and return flow from irrigated areas. 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	635	928	713	598	595	579	674	1,500	10,300	1,820	1,260	1,360
2	613	951	776	649	613	578	743	1,350	10,900	1,750	1,310	1,280
3	648	933	695	626	597	575	812	1,250	8,790	1,810	1,320	1,240
4	659	884	719	629	535	604	818	1,330	7,180	1,730	1,390	1,260
5	644	882	737	656	562	613	727	1,400	5,960	1,620	1,460	1,350
6	629	822	685	609	553	594	673	1,280	5,050	1,530	1,400	1,380
7	630	792	649	646	505	614	630	1,180	4,410	1,470	1,370	1,480
8	623	881	657	609	454	623	641	1,190	3,870	1,410	1,370	1,560
9	611	946	591	573	528	634	699	1,190	3,730	1,470	1,340	1,560
10	662	967	583	574	574	643	757	1,440	3,890	1,450	1,310	1,580
11	674	930	548	596	603	696	804	1,510	3,980	1,310	1,300	1,660
12	678	901	586	e595	634	765	879	1,330	3,860	1,430	1,250	1,420
13	657	903	609	e571	614	824	895	1,310	3,730	1,470	1,190	1,240
14	646	917	582	e594	621	876	1,050	1,490	3,580	1,440	1,240	1,190
15	651	928	583	e591	643	888	1,260	1,900	3,670	1,380	1,270	1,200
16	648	881	588	e539	603	762	1,210	2,370	3,680	1,430	1,250	1,150
17	674	846	623	e536	608	710	1,050	3,060	3,390	1,440	1,330	1,170
18	690	801	628	e501	600	723	994	3,640	3,200	1,450	1,590	1,250
19	680	719	631	e479	563	686	951	3,990	3,080	1,410	1,830	1,330
20	680	681	593	e510	543	646	877	3,890	3,250	1,380	1,540	1,350
21	671	677	627	e539	588	629	823	3,910	3,140	1,390	1,410	1,350
22	678	672	633	e557	593	697	861	4,150	2,930	1,500	1,350	1,380
23	729	635	602	e574	557	794	1,030	4,740	2,810	1,270	1,360	1,400
24	829	640	560	573	562	833	1,080	5,270	2,600	1,140	1,460	1,400
25	833	697	597	580	578	838	1,050	6,020	2,360	1,190	1,490	1,470
26	816	622	683	566	575	710	1,140	6,370	2,160	1,370	1,450	1,610
27	833	470	637	559	581	711	1,420	6,680	2,110	1,540	1,430	1,590
28	880	597	609	585	575	672	1,610	7,620	2,060	1,520	1,430	1,560
29	857	701	618	562	---	620	1,700	8,330	2,010	1,470	1,350	1,560
30	870	684	627	565	---	632	1,650	9,350	1,920	1,400	1,320	1,550
31	876	---	594	596	---	651	---	9,630	---	1,280	1,360	---
TOTAL	21,904	23,888	19,563	17,937	16,157	21,420	29,508	109,670	123,600	45,270	42,730	41,880
MEAN	707	796	631	579	577	691	984	3,538	4,120	1,460	1,378	1,396
MAX	880	967	776	656	643	888	1,700	9,630	10,900	1,820	1,830	1,660
MIN	611	470	548	479	454	575	630	1,180	1,920	1,140	1,190	1,150
AC-FT	43,450	47,380	38,800	35,580	32,050	42,490	58,530	217,500	245,200	89,790	84,750	83,070
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 2003, BY WATER YEAR (WY)
MEAN	1,207	1,079	941	899	910	1,035	1,843	4,754	6,246	3,082	1,708	1,301
MAX	2,038	1,664	1,503	1,473	1,603	1,961	5,601	10,770	13,440	9,354	4,055	2,616
(WY)	(1963)	(1963)	(1985)	(1985)	(1962)	(1962)	(1962)	(1984)	(1984)	(1983)	(1984)	(1984)
MIN	707	677	521	504	529	610	984	1,254	1,220	1,021	912	661
(WY)	(2003)	(1978)	(1943)	(1941)	(1943)	(1964)	(2003)	(2002)	(2002)	(1963)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1941 - 2003
ANNUAL TOTAL	315,618	513,527
ANNUAL MEAN	865	1,407	2,086
HIGHEST ANNUAL MEAN			4,173 1984
LOWEST ANNUAL MEAN			898 2002
HIGHEST DAILY MEAN	1,910 Jun 1	10,900 Jun 2	20,800 May 25, 1984
LOWEST DAILY MEAN	470 Nov 27	454 Feb 8	a350 Jan 5, 1944
ANNUAL SEVEN-DAY MINIMUM	528 Jan 31	e523 Jan 16	417 Jan 13, 1944
MAXIMUM PEAK FLOW		11,700 Jun 2	22,200 May 25, 1984
MAXIMUM PEAK STAGE		9.54 Jun 2	14.20 May 25, 1984
ANNUAL RUNOFF (AC-FT)	626,000	1,019,000	1,511,000
10 PERCENT EXCEEDS	1,300	2,980	4,780
50 PERCENT EXCEEDS	790	881	1,260
90 PERCENT EXCEEDS	560	580	750

e Estimated. a Also occurred Jan 1, 1995.