GREEN RIVER BASIN

09251100 YAMPA RIVER ABOVE LITTLE SNAKE RIVER, NEAR MAYBELL, CO

LOCATION.--Lat 40°27'39", long 108°25'30", in NW14NE14 sec.20, T.6 N., R.98 W., Moffat County, Hydrologic Unit 14050002, attached to center pier of Moffat County Road 25 bridge, 1 mi upstream from the mouth of Little Snake River and 18 mi west of Maybell.

DRAINAGE AREA.--3,837 mi2.

PERIOD OF RECORD.--May 1996 to September 2003 (discontinued). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09251100

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 5,640 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for estimated daily discharges, which are poor, and the period July 5-19, which is fair. Natural flow of stream affected by transbasin diversions, numerous storage reservoirs and diversions for irrigation of about 65,800 acres upstream 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	101	191	236	e184	e220	205	621	4,630	12,200	1,870	201	144
2	123	197	e262	e183	e216	204	679	4,040	12,300	1,740	221	127
3	132	204	e260	e187	e209	224	1,310	3,420	13,200	1,580	187	122
4	164	194	e256	e189	e205	215	1,750	3,230	11,900	1,460	177	136
5	156	205	e257	e181	e196	231	1,530	3,520	9,470	1,280	180	128
6	188	205	252	e190	e191	254	1,100	3,630	7,980	1,140	149	104
7	223	177	e243	e192	e202	265	953	3,310	6,870	998	134	90
8	205	192	e235	e193	e207	281	899	2,930	6,120	824	127	91
9	183	213	e233	e195	e204	330	793	2,940	5,460	711	126	128
10	164	211	224	e197	e191	449	708	3,010	5,580	634	104	175
11	164	222	e200	e203	e186	511	830	3,050	5,720	598	91	232
12	183	242	205	e199	e184	789	1,510	2,750	6,460	e560	79	247
13	173	245	e210	e200	200	888	2,120	2,490	6,420	e500	71	278
14	171	234	e190	e201	191	1,090	2,390	2,770	5,340	e440	88	327
15	176	230	e180	e200	e217	1,260	2,950	3,730	5,080	420	103	320
16	166	243	183	e198	e224	1,360	3,430	5,140	5,070	385	95	312
17	150	249	216	e204	e232	1,360	3,280	6,210	4,940	361	106	289
18	151	221	202	e193	e245	1,160	2,730	7,570	4,450	344	105	244
19	150	215	200	e192	e235	984	2,440	8,410	e4,050	308	106	218
20	136	223	e169	e201	e230	816	2,350	8,140	e4,050	306	104	197
21	140	237	e165	e207	226	710	2,030	7,860	e4,200	328	104	164
22	141	233	e160	e210	213	677	1,960	8,010	e3,700	344	149	187
23	152	243	e170	e208	210	673	2,210	8,300	e3,470	347	172	205
24	151	239	e140	e206	218	711	2,780	8,850	3,220	339	163	196
25	159	248	e150	e210	223	923	3,130	9,570	3,030	306	149	200
26	158	256	e169	e208	206	1,240	4,080	10,100	2,720	280	143	170
27	185	e190	e167	e212	196	981	5,050	10,100	2,440	266	133	162
28	187	e170	e178	e210	200	929	5,040	10,100	2,120	238	136	178
29	189	e190	e181	e211	---	861	4,510	10,700	2,080	213	130	160
30	172	e240	e186	216	---	e736	4,530	11,600	2,020	204	163	166
31	172	---	e186	e220	---	e668	---	12,200	---	196	154	---
TOTAL	5,065	6,559	6,265	6,200	5,877	21,985	69,693	192,310	171,660	19,520	4,150	5,697
MEAN	163	219	202	200	210	709	2,323	6,204	5,722	630	134	190
MAX	223	256	262	220	245	1,360	5,050	12,200	13,200	1,870	221	327
MIN	101	170	140	181	184	204	621	2,490	2,020	196	71	90
AC-FT	10,050	13,010	12,430	12,300	11,660	43,610	138,200	381,400	340,500	38,720	8,230	11,300
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 2003, BY WATER YEAR (WY)
MEAN	412	398	321	348	368	951	2,670	6,105	5,051	1,008	335	343
MAX	1,250	758	494	532	546	1,908	4,258	9,419	9,348	2,004	921	1,448
(WY)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1997)	(1997)	(1998)	(1997)	(1997)
MIN	163	219	202	200	210	378	1,500	1,949	1,184	39.5	24.1	53.1
(WY)	(2003)	(2003)	(2003)	(2003)	(2003)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1996 - 2003
ANNUAL TOTAL	188,410.00	514,981
ANNUAL MEAN	516	1,411	1,505
HIGHEST ANNUAL MEAN			2,458 1997
LOWEST ANNUAL MEAN			525 2002
HIGHEST DAILY MEAN	3,100 Jun 2	13,200 Jun 3	15,500 Jun 5, 1997
LOWEST DAILY MEAN	0.00 Jul 14	71 Aug 13	a0.00 Jul 14, 2002
ANNUAL SEVEN-DAY MINIMUM	0.73 Jul 13	90 Aug 10	0.73 Jul 13, 2002
MAXIMUM PEAK FLOW		16,100 Jun 3	16,400 Jun 5, 1997
MAXIMUM PEAK STAGE		10.56 Jun 3	10.74 Jun 5, 1997
ANNUAL RUNOFF (AC-FT)	373,700	1,021,000	1,090,000
10 PERCENT EXCEEDS	1,760	4,570	4,920
50 PERCENT EXCEEDS	235	224	425
90 PERCENT EXCEEDS	18	149	162

e Estimated. a Also occurred Jul 15-18, 2002.