COLORADO RIVER MAIN STEM

09058000 COLORADO RIVER NEAR KREMMLING, CO

LOCATION.--Lat 40°02'12", long 106°26'22", in NE14SW14 sec.23, T.1 N., R.81 W., Grand County, Hydrologic Unit 14010001, on right bank at upstream end of Gore Canyon, 3.0 mi southwest of Kremmling and 3.8 mi downstream from Blue River.

DRAINAGE AREA.--2,382 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--July 1904 to September 1918 (published as Grand River near Kremmling), October 1961 to September 1970, October 1971 to current year. Statistical summary computed for 1962 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09058000

REVISED RECORDS.--WSP 2124: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 7,320 ft above NGVD of 1929, from topographic map. See WSP 1313 for history of changes prior to Oct. 1, 1961.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by transmountain diversions, storage reservoirs, diversions for irrigation of about 40,000 acres upstream from station, and return flow from irrigated areas.

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	334	593	e460	e400	367	406	499	386	2,470	335	933	938
2	334	606	e470	e390	366	413	516	369	2,420	489	973	915
3	342	600	e460	e395	372	423	512	360	1,660	464	1,030	927
4	345	571	e450	e390	396	431	449	380	1,110	429	1,090	1,030
5	341	520	420	e400	394	420	402	412	784	421	1,080	1,050
6	e345	502	423	e390	398	418	377	381	599	435	1,050	1,060
7	e350	556	441	e370	370	424	417	399	507	449	1,030	1,070
8	346	568	e440	e370	374	423	461	346	477	577	1,000	1,030
9	401	591	e360	e360	e380	432	478	551	466	601	991	930
10	431	585	e350	e370	e390	472	443	685	460	506	1,010	877
11	436	574	341	e395	e395	530	429	556	455	660	966	767
12	430	574	352	e400	e390	580	409	418	440	732	919	607
13	426	561	e360	e395	e380	626	479	372	443	731	948	562
14	430	570	e370	e375	400	642	563	394	548	708	1,010	659
15	430	570	e360	e360	391	518	501	443	564	765	995	667
16	462	556	e350	e365	381	462	435	554	527	795	980	720
17	476	474	e380	e365	399	451	379	568	488	823	993	810
18	465	409	e385	e350	382	462	364	649	442	800	1,130	902
19	462	379	e390	e400	381	427	352	737	457	789	1,070	938
20	463	380	e390	e400	385	416	328	773	467	849	1,000	946
21	467	380	e410	e390	395	490	320	789	475	998	996	982
22	476	350	e395	e380	379	570	352	783	450	821	987	1,020
23	538	346	e390	383	380	581	394	843	417	705	990	1,040
24	546	392	e350	379	379	575	379	1,010	396	761	993	1,080
25	539	404	e355	376	383	474	356	1,280	389	863	1,010	1,230
26	549	326	e350	371	385	466	389	1,450	392	998	1,020	1,230
27	583	392	e380	400	396	454	497	1,370	377	1,020	1,030	1,190
28	551	455	e385	384	412	429	557	1,420	352	991	968	1,200
29	556	471	e400	382	---	422	457	1,780	355	914	953	1,190
30	548	461	e405	361	---	441	410	2,210	348	839	950	1,180
31	548	---	e400	364	---	461	---	2,430	---	848	975	---
TOTAL	13,950	14,716	12,172	11,810	10,800	14,739	12,904	25,098	19,735	22,116	31,070	28,747
MEAN	450	491	393	381	386	475	430	810	658	713	1,002	958
MAX	583	606	470	400	412	642	563	2,430	2,470	1,020	1,130	1,230
MIN	334	326	341	350	366	406	320	346	348	335	919	562
AC-FT	27,670	29,190	24,140	23,430	21,420	29,230	25,600	49,780	39,140	43,870	61,630	57,020
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1962 - 2003, BY WATER YEAR (WY)
MEAN	757	639	569	551	542	642	999	1,815	2,086	1,531	1,085	872
MAX	1,413	1,030	1,067	1,000	1,025	1,394	3,297	6,200	7,160	5,840	2,321	1,366
(WY)	(1963)	(1985)	(1985)	(1985)	(1962)	(1962)	(1962)	(1984)	(1984)	(1983)	(1984)	(1984)
MIN	450	352	277	278	294	331	430	320	379	539	630	461
(WY)	(2003)	(1978)	(1964)	(1964)	(1964)	(1977)	(2003)	(2002)	(1966)	(1963)	(1963)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1962 - 2003
ANNUAL TOTAL	182,940	217,857
ANNUAL MEAN	501	597	1,009
HIGHEST ANNUAL MEAN			2,378 1984
LOWEST ANNUAL MEAN			523 2002
HIGHEST DAILY MEAN	891 Jul 4	2,470 Jun 1	a12,700 May 26, 1984
LOWEST DAILY MEAN	200 May 11	320 Apr 21	b200 May 11, 2002
ANNUAL SEVEN-DAY MINIMUM	225 May 8	342 Oct 1	225 May 8, 2002
MAXIMUM PEAK FLOW		2,620 Jun 2	c13,600 May 26, 1984
MAXIMUM PEAK STAGE		8.75 Jun 2	16.60 May 26, 1984
ANNUAL RUNOFF (AC-FT)	362,900	432,100	731,100
10 PERCENT EXCEEDS	792	1,010	1,810
50 PERCENT EXCEEDS	450	460	754
90 PERCENT EXCEEDS	333	363	417

e Estimated. a Maximum daily discharge for period of record, 20,000 ft3/s, Jun 7, 1912. b Minimum discharge observed for period of record, 166 ft3/s, Dec 19, 1907. c Maximum discharge observed for period of record, 21,500 ft3/s, Jun 7, 1912, gage height, 21.8 ft, datum then in use, from rating curve extended above 14,000 ft3/s.