GREEN RIVER BASIN

09251000 YAMPA RIVER NEAR MAYBELL, CO

LOCATION.--Lat 40°30'10", long 108°01'45", in SE14NW14 sec.2, T.6 N., R.95 W., Moffat County, Hydrologic Unit 14050002, on left bank 60 ft downstream from bridge on U.S. Highway 40, 2.0 mi downstream from Lay Creek, and 3.0 mi east of Maybell.

DRAINAGE AREA.--3,410 mi2, approximately.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 1904 to October 1905, June 1910 to November 1912, April 1916 to current year. Monthly discharge only for some periods, published in WSP 1313. No winter records prior to 1917. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09251000

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 5,900.23 ft above NGVD of 1929. See WSP 1733 for history of changes prior to
Mar. 9, 1937.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by transbasin diversions, numerous storage reservoirs, and diversions upstream from station for irrigation of about 65,000 acres upstream from, and about 800 acres downstream from station.

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	91	181	e244	e183	e217	e203	588	4,600	12,100	1,650	215	87
2	110	202	e253	e180	e211	e203	903	3,800	12,700	1,520	170	87
3	160	190	e256	e178	e201	e218	1,580	3,270	12,900	1,410	157	99
4	149	210	e253	e183	e193	e225	1,720	3,310	10,600	1,290	156	81
5	204	200	e251	e175	e189	e250	1,160	3,670	8,760	1,130	117	65
6	290	167	e241	e178	e184	e300	963	3,600	7,420	1,040	94	55
7	256	186	e236	e182	e197	e350	872	3,050	6,390	907	95	69
8	215	204	233	e183	e203	e400	785	2,860	5,680	821	86	82
9	187	207	e217	e186	e198	e450	692	2,930	5,200	734	63	121
10	184	228	e198	e188	e187	514	705	3,020	5,420	644	57	139
11	216	259	e198	e193	e182	707	1,060	2,910	5,710	576	43	164
12	196	267	e210	e192	e178	999	1,730	2,600	6,340	501	52	204
13	192	245	e200	e195	e187	998	2,240	2,470	5,740	478	66	269
14	199	236	e186	e197	e198	1,150	2,590	3,240	4,880	454	70	259
15	175	262	e183	e197	e210	1,360	3,280	4,420	4,790	392	67	256
16	153	277	e186	e190	e216	1,370	3,540	5,990	4,720	373	61	234
17	159	232	e211	e200	e224	1,180	3,010	7,170	4,560	348	62	183
18	156	212	e210	e187	e237	1,030	2,520	8,460	3,970	326	60	163
19	141	233	e200	e187	e249	847	2,360	8,950	3,710	321	67	141
20	145	261	e170	e197	e237	712	2,100	8,230	3,730	339	95	125
21	140	251	e150	e201	e222	665	1,840	7,970	3,760	360	126	151
22	137	274	e155	e206	e210	650	1,950	8,070	3,340	369	133	160
23	134	261	e160	e203	e209	666	2,350	8,400	2,980	370	130	151
24	138	265	e150	e200	e215	748	3,080	8,970	2,890	325	112	174
25	144	300	e130	e205	e219	1,180	3,560	9,730	2,680	279	117	149
26	185	266	e150	e198	e203	1,010	4,700	10,200	2,420	256	115	152
27	186	185	e164	e208	e193	926	5,300	10,100	2,050	230	109	154
28	179	185	e162	e205	e198	875	4,860	10,300	1,880	217	113	136
29	155	189	e173	e205	---	761	4,520	11,000	1,880	207	138	145
30	156	212	e175	e211	---	648	4,690	11,700	1,790	195	122	151
31	173	---	e178	e216	---	586	---	12,100	---	202	102	---
TOTAL	5,305	6,847	6,083	6,009	5,767	22,181	71,248	197,090	160,990	18,264	3,170	4,406
MEAN	171	228	196	194	206	716	2,375	6,358	5,366	589	102	147
MAX	290	300	256	216	249	1,370	5,300	12,100	12,900	1,650	215	269
MIN	91	167	130	175	178	203	588	2,470	1,790	195	43	55
AC-FT	10,520	13,580	12,070	11,920	11,440	44,000	141,300	390,900	319,300	36,230	6,290	8,740
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1916 - 2003, BY WATER YEAR (WY)
MEAN	347	352	296	278	333	716	2,594	6,235	5,476	1,373	376	245
MAX	1,174	768	624	610	1,071	2,063	6,496	14,000	12,810	5,819	1,052	1,366
(WY)	(1998)	(1998)	(1948)	(1948)	(1986)	(1986)	(1962)	(1984)	(1917)	(1957)	(1957)	(1997)
MIN	117	184	137	115	160	221	735	1,850	548	20.4	12.7	27.8
(WY)	(1964)	(1977)	(1964)	(1934)	(1964)	(1964)	(1944)	(1977)	(1934)	(1934)	(2002)	(1934)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1916 - 2003
ANNUAL TOTAL	183,174.1	507,360
ANNUAL MEAN	502	1,390	1,553
HIGHEST ANNUAL MEAN			3,025 1984
LOWEST ANNUAL MEAN			477 1977
HIGHEST DAILY MEAN	3,420 Jun 1	12,900 Jun 3	24,400 May 17, 1984
LOWEST DAILY MEAN	1.8 Aug 31	43 Aug 11	1.8 Aug 31, 2002
ANNUAL SEVEN-DAY MINIMUM	2.6 Aug 28	59 Aug 10	2.6 Aug 28, 2002
MAXIMUM PEAK FLOW		13,200 Jun 3	25,100 May 17, 1984
MAXIMUM PEAK STAGE		9.60 Jun 3	12.42 May 17, 1984
ANNUAL RUNOFF (AC-FT)	363,300	1,006,000	1,125,000
10 PERCENT EXCEEDS	1,720	4,640	5,250
50 PERCENT EXCEEDS	220	218	400
90 PERCENT EXCEEDS	11	128	174

e Estimated.