GREEN RIVER BASIN

09239500 YAMPA RIVER AT STEAMBOAT SPRINGS, CO

LOCATION.--Lat 40°29'01", long 106°49'54", in NW14NE14 sec.17, T.6 N., R.84 W., Routt County, Hydrologic Unit 14050001, on left bank 30 ft upstream from Fifth Street Bridge in Steamboat Springs, and 0.6 mi upstream from Soda Creek.

DRAINAGE AREA.--568 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--May 1904 to October 1906, October 1909 to current year. Monthly discharge only for some periods, published in WSP 1313. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09239500

REVISED RECORDS.--WDR C0-00-2: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 6,695.47 ft above NGVD of 1929. Prior to May 8, 1905, nonrecording gage at bridge 0.2 mi upstream at datum 4.16 ft higher. May 8, 1905 to Oct. 31, 1906, nonrecording gage on bridge 30 ft upstream at datum 0.44 ft higher. Mar. 8, 1910 to Sept. 11, 1934, water-stage recorder on right bank, 60 ft downstream, at datum 0.44 ft higher. Sept. 11, 1934 to Aug. 17, 1988, water-stage recorder on right bank, 60 ft downstream, at present datum.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by two diversions for irrigation to Egeria Creek in Colorado River basin, one diversion for irrigation from Trout Creek drainage to Oak Creek drainage, irrigation of about 19,700 acres upstream from station, and by storage in Stillwater, Yampa, YamColo, Stagecoach, and Catamount Reservoirs, (total capacity 56,895 acre-ft) and pumping of water to ski area for snow making during winter.

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	e55	106	59	85	78	185	781	4,590	454	101	99
2	53	e56	106	56	85	78	258	723	4,370	420	110	93
3	93	e60	105	58	83	78	295	680	3,650	392	99	92
4	73	e56	104	57	82	81	217	709	3,190	353	98	89
5	69	e54	105	58	82	80	191	765	2,670	314	100	88
6	66	e60	104	56	79	80	193	683	2,280	286	100	84
7	65	e61	97	54	75	79	173	612	2,050	266	89	99
8	70	e60	97	53	89	80	165	604	1,820	237	90	110
9	72	e62	95	52	86	84	189	641	1,830	207	94	103
10	72	e68	94	55	83	88	297	638	1,960	179	89	122
11	72	e68	86	62	83	95	415	571	2,030	162	85	143
12	69	e66	80	60	82	105	474	534	1,770	147	81	149
13	64	e64	81	59	85	115	585	604	1,610	137	81	143
14	65	e68	78	61	89	121	710	767	1,610	126	82	122
15	64	e72	84	62	86	133	722	1,030	1,520	109	77	103
16	61	e70	78	59	81	142	702	1,320	1,430	105	78	93
17	59	e68	79	61	82	142	555	1,590	1,310	109	84	89
18	58	e74	73	58	81	133	525	1,750	1,250	113	101	83
19	58	e74	62	58	80	125	493	1,720	1,150	116	107	75
20	59	e80	58	59	81	126	424	1,730	1,120	137	103	77
21	59	e85	60	65	83	130	411	1,850	1,010	134	95	76
22	58	e83	57	65	81	128	462	2,030	919	117	87	78
23	66	e85	53	67	81	143	607	2,400	862	103	83	93
24	66	e90	57	68	82	186	629	2,820	767	105	86	88
25	66	e92	55	73	84	158	732	3,140	744	106	85	77
26	62	93	55	73	82	153	1,010	3,070	654	100	85	72
27	e56	102	53	74	80	156	1,020	3,340	599	95	85	81
28	e57	107	51	76	79	140	906	3,800	550	92	84	96
29	e56	105	53	79	---	127	892	4,240	502	106	90	102
30	e56	107	57	78	---	122	874	4,370	480	120	89	99
31	e57	---	52	83	---	132	---	4,110	---	110	96	---
TOTAL	1,975	2,245	2,375	1,958	2,311	3,618	15,311	53,622	50,297	5,557	2,814	2,918
MEAN	63.7	74.8	76.6	63.2	82.5	117	510	1,730	1,677	179	90.8	97.3
MAX	93	107	106	83	89	186	1,020	4,370	4,590	454	110	149
MIN	53	54	51	52	75	78	165	534	480	92	77	72
AC-FT	3,920	4,450	4,710	3,880	4,580	7,180	30,370	106,400	99,760	11,020	5,580	5,790
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1910 - 2003, BY WATER YEAR (WY)
MEAN	134	126	104	100	103	167	651	1,723	1,789	360	151	110
MAX	378	274	205	190	176	433	1,675	3,350	3,771	1,684	387	432
(WY)	(1998)	(1998)	(1998)	(1998)	(1998)	(1910)	(1962)	(1984)	(1917)	(1957)	(1984)	(1997)
MIN	49.6	69.3	56.6	45.0	50.0	73.5	236	702	141	16.2	40.5	19.5
(WY)	(1935)	(1978)	(1916)	(1916)	(1916)	(1964)	(1995)	(1977)	(1934)	(1934)	(1931)	(1944)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1910 - 2003
ANNUAL TOTAL	62,870	145,001
ANNUAL MEAN	172	397	461
HIGHEST ANNUAL MEAN			821 1984
LOWEST ANNUAL MEAN			169 1977
HIGHEST DAILY MEAN	1,090 May 21	4,590 Jun 1	5,870 Jun 14, 1921
LOWEST DAILY MEAN	17 Jul 16	51 Dec 28	a4.0 Sep 8, 1934
ANNUAL SEVEN-DAY MINIMUM	22 Jul 13	54 Dec 25	4.9 Sep 9, 1944
MAXIMUM PEAK FLOW		5,190 Jun 1	b6,820 Jun 14, 1921
MAXIMUM PEAK STAGE		7.44 Jun 1	c7.08 Jun 14, 1921
ANNUAL RUNOFF (AC-FT)	124,700	287,600	333,900
10 PERCENT EXCEEDS	555	1,070	1,500
50 PERCENT EXCEEDS	85	93	136
90 PERCENT EXCEEDS	47	59	75

e Estimated. a Also occurred Sep 10-13, 1944. b Present datum, from rating curve extended above 4,800 ft3/s. c Maximum gage height, 7.65 ft, Jun 3, 1997.