ROARING FORK RIVER BASIN

09085000 ROARING FORK RIVER AT GLENWOOD SPRINGS, CO

LOCATION.--Lat 39°32'37", long 107°19'44", in SW14SE14 sec.9, T.6 S., R.89 W., Garfield County, Hydrologic Unit 14010004, on left bank at Glenwood Springs, 2,100 ft upstream from mouth.

DRAINAGE AREA.--1,451 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1905 to September 1909, September 1910 to current year. Monthly discharge only for some periods, published in WSP 1313. Prior to October 1960, published as Roaring Fork at Glenwood Springs. Statistical summary computed for 1972 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09085000

REVISED RECORDS.--WSP 2124: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 5,720.73 ft above NGVD of 1929. Prior to Nov. 20, 1915, nonrecording gage on highway bridge 800 ft downstream, at different datum. Nov. 20, 1915 to Oct. 26, 1917, nonrecording gage at present site and datum.

REMARKS.--Records good except for estimated daily discharges, which are poor. Diversions upstream from station for irrigation of about 35,000 acres. Transmountain diversions to Arkansas River basin through Busk-Ivanhoe tunnel since 1925, Twin Lakes tunnel since 1935, and Charles H. Boustead tunnel since 1972. Natural flow of stream affected by storage in Ruedi Reservoir on Fryingpan River (station 09080190) since May 1968.

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	529	489	395	342	282	252	308	713	6,950	1,710	712	657
2	511	489	385	321	287	245	329	687	6,150	1,710	678	644
3	548	473	369	331	292	236	341	683	5,070	1,630	670	653
4	545	446	362	335	268	261	332	786	4,630	1,550	682	704
5	529	446	372	331	272	261	319	752	4,160	1,470	660	690
6	514	426	357	325	e190	253	326	663	3,450	1,380	629	710
7	503	424	346	306	e180	255	325	609	2,980	1,300	626	766
8	488	435	344	302	e210	259	307	594	2,710	1,240	629	822
9	471	537	333	306	e260	269	308	597	2,890	1,170	647	781
10	470	515	330	330	259	274	322	581	3,120	1,110	648	910
11	456	469	341	333	286	289	374	550	2,830	1,050	627	909
12	440	430	360	318	286	308	438	537	3,050	998	632	805
13	440	422	367	297	308	317	501	607	3,180	957	641	802
14	429	443	340	308	322	321	584	692	2,940	913	654	782
15	425	431	352	307	310	325	604	997	3,040	885	648	745
16	423	400	345	276	285	326	541	1,290	3,260	889	664	712
17	427	403	360	303	277	327	504	1,790	2,810	865	695	689
18	420	418	360	276	270	332	522	2,250	2,710	849	731	711
19	406	394	337	286	262	307	492	2,260	2,720	834	719	750
20	396	398	324	303	249	295	472	2,070	2,660	825	686	747
21	383	398	367	306	270	302	466	2,040	2,430	794	666	725
22	385	393	331	310	267	291	524	2,250	2,410	772	672	706
23	415	400	308	315	259	295	594	2,700	2,390	748	673	679
24	417	404	375	304	247	327	560	3,130	2,280	753	665	659
25	414	405	338	297	270	335	554	3,550	1,970	734	660	647
26	411	377	311	291	262	318	614	3,470	1,880	801	644	626
27	411	338	329	285	261	330	730	4,060	1,910	1,020	634	613
28	417	353	326	284	257	302	792	5,240	1,910	942	651	601
29	409	379	349	279	---	280	809	5,990	1,880	785	643	590
30	410	387	351	277	---	285	775	6,720	1,800	725	655	581
31	447	---	315	281	---	297	---	6,520	---	683	675	---
TOTAL	13,889	12,722	10,779	9,465	7,448	9,074	14,667	65,378	92,170	32,092	20,516	21,416
MEAN	448	424	348	305	266	293	489	2,109	3,072	1,035	662	714
MAX	548	537	395	342	322	335	809	6,720	6,950	1,710	731	910
MIN	383	338	308	276	180	236	307	537	1,800	683	626	581
AC-FT	27,550	25,230	21,380	18,770	14,770	18,000	29,090	129,700	182,800	63,650	40,690	42,480
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1972 - 2003, BY WATER YEAR (WY)
MEAN	729	658	559	494	467	523	807	2,211	3,952	2,297	978	739
MAX	1,159	969	790	677	689	861	1,602	4,663	7,383	7,483	2,676	1,160
(WY)	(1985)	(1985)	(1985)	(1996)	(1986)	(1986)	(1985)	(1984)	(1984)	(1995)	(1995)	(1995)
MIN	384	411	348	305	266	293	352	593	1,100	422	316	363
(WY)	(1978)	(1978)	(2003)	(2003)	(2003)	(2003)	(1977)	(1977)	(2002)	(1977)	(1977)	(1977)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1972 - 2003
ANNUAL TOTAL	192,968	309,616
ANNUAL MEAN	529	848	a1,203
HIGHEST ANNUAL MEAN			2,092 1984
LOWEST ANNUAL MEAN			485 1977
HIGHEST DAILY MEAN	2,170 Jun 1	6,950 Jun 1	b11,800 Jul 12, 1995
LOWEST DAILY MEAN	e270 Jan 31	e180 Feb 7	c,d180 Feb 7, 2003
ANNUAL SEVEN-DAY MINIMUM	302 Jan 30	234 Feb 4	234 Feb 4, 2003
MAXIMUM PEAK FLOW		7,650 May 31	f13,000 Jul 13, 1995
MAXIMUM PEAK STAGE		6.43 May 31	g8.31 Jul 13, 1995
ANNUAL RUNOFF (AC-FT)	382,800	614,100	871,600
10 PERCENT EXCEEDS	787	2,140	2,870
50 PERCENT EXCEEDS	445	472	668
90 PERCENT EXCEEDS	331	283	420

e Estimated. a Average discharge for 65 years (water years 1906-09, 1911-71), 1368 ft3/s; 99,1100 acre-ft/yr, prior to diversion through Charles H. Boustead tunnel. b Maximum daily discharge for period of record, 16,600 ft3/s, Jun 30, 1957. c Minimum daily discharge for period of record, 179 ft3/s, Jan 21, 1935; minimum discharge during the day of Jan 21, 1935, 145 ft3/s, gage height, 0.65 ft. d Also occurred Aug 12, 1977. f Maximum discharge for period of record, 19,000 ft3/s, Jul 1, 1957, gage height, 8.65 ft. g Maximum gage height for period of record, 8.7 ft, Jun 14, 1921, from floodmarks.