GREEN RIVER BASIN

09246400 ELKHEAD CREEK BELOW MAYNARD GULCH NEAR CRAIG, CO

LOCATION.--Lat 40°32'31", long 107°23'50", in SW14SE14 sec.20, T.7 N., R.89 W., Moffat County, Hydrologic Unit 14050001, on left bank 2.0 mi downstream from Maynard Gulch, and 8.5 mi northeast of Craig.

DRAINAGE AREA.--212 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--August 1995 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09246400

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 6,280 ft above NGVD of 1929, from topographic map.

REMARKS.--Record good except for estimated daily discharges, which are poor. Natural flow affected by diversions for irrigation of several hundred acres upstream from station and storage in Elkhead Reservoir.

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	1.3	1.4	1.3	e3.0	e1.1	e1.8	67	502	370	16	1.9	1.8
2	0.95	1.4	1.2	3.1	e1.3	e1.9	176	404	393	11	1.6	1.7
3	1.3	1.1	1.4	2.7	e1.1	e2.2	178	396	292	10	1.8	1.8
4	1.4	1.1	1.4	2.3	e1.0	e2.4	101	482	230	8.8	2.2	1.6
5	1.3	1.2	1.4	2.2	e1.3	e2.5	68	492	187	7.0	1.8	1.6
6	0.88	1.2	1.4	2.0	e2.2	e2.4	57	408	154	5.9	1.7	1.8
7	0.61	1.4	1.4	1.6	e1.9	e2.4	47	358	133	3.9	1.7	2.9
8	0.54	1.4	1.3	1.8	e2.0	e2.1	38	364	114	3.3	1.6	1.7
9	0.49	1.1	1.2	e2.0	e1.8	e1.8	37	380	98	3.4	1.6	1.9
10	0.46	1.0	1.0	e3.1	e2.0	1.2	83	369	92	2.0	1.6	2.9
11	0.39	1.0	1.0	e3.1	e2.0	1.5	178	322	99	2.7	1.5	2.4
12	0.36	1.0	1.3	e3.1	e2.0	1.3	264	295	100	2.4	1.7	1.5
13	0.31	1.1	1.4	e3.1	e2.0	1.5	313	405	82	2.8	1.9	1.1
14	0.33	1.1	1.4	e3.3	e2.0	1.3	424	526	70	2.2	2.0	0.62
15	0.30	1.2	1.4	e3.2	e1.8	1.5	516	818	62	1.5	2.2	0.50
16	0.34	1.0	1.4	e3.2	e1.9	1.3	385	940	52	1.5	2.5	0.69
17	0.36	1.0	1.2	e3.2	e2.1	1.5	284	969	46	1.6	3.2	0.94
18	0.36	1.0	1.4	e3.2	e1.9	1.6	259	998	45	2.1	3.6	1.6
19	0.34	1.0	1.3	e3.3	e1.9	1.4	223	825	43	2.0	2.9	1.1
20	0.27	1.0	1.2	e4.6	e2.0	1.4	188	700	44	2.5	2.6	1.2
21	0.28	1.0	1.0	e6.2	e2.1	1.4	215	662	48	2.0	2.5	1.2
22	0.40	1.0	1.1	e6.1	e1.9	1.3	300	634	45	1.5	2.7	1.8
23	1.3	1.3	1.5	e6.2	e1.9	1.1	425	632	40	1.4	3.7	1.7
24	1.3	1.0	1.7	e4.2	e1.7	2.3	360	665	35	1.4	2.6	1.6
25	1.2	1.2	1.9	e3.6	e1.7	1.2	444	645	32	1.4	2.6	1.6
26	1.3	1.4	2.1	e3.2	e1.7	1.2	894	591	29	1.4	2.5	1.3
27	1.2	1.4	2.1	e2.7	e1.7	3.5	803	538	27	1.5	2.5	1.4
28	1.2	1.4	2.3	e2.4	e1.8	28	582	507	25	1.7	2.5	1.8
29	1.4	1.4	2.3	e1.4	---	31	613	469	22	3.9	2.1	0.91
30	1.4	1.4	2.2	e1.2	---	28	655	436	18	1.7	2.2	0.76
31	1.4	---	3.0	e1.4	---	26	---	399	---	1.7	2.3	---
TOTAL	24.97	35.2	47.2	95.7	49.8	160.0	9,177	17,131	3,027	112.2	69.8	45.42
MEAN	0.81	1.17	1.52	3.09	1.78	5.16	306	553	101	3.62	2.25	1.51
MAX	1.4	1.4	3.0	6.2	2.2	31	894	998	393	16	3.7	2.9
MIN	0.27	1.0	1.0	1.2	1.0	1.1	37	295	18	1.4	1.5	0.50
AC-FT	50	70	94	190	99	317	18,200	33,980	6,000	223	138	90
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 2003, BY WATER YEAR (WY)
MEAN	10.1	11.8	10.5	12.3	14.0	68.8	368	635	139	12.8	5.99	7.13
MAX	39.3	33.2	29.8	29.6	32.0	169	503	1,224	362	39.3	13.6	32.0
(WY)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1998)	(1997)	(1997)	(1998)	(1997)	(1997)
MIN	0.81	1.17	1.52	3.09	1.78	5.16	148	78.0	5.31	1.97	1.46	1.05
(WY)	(2003)	(2003)	(2003)	(2003)	(2003)	(2003)	(2002)	(2002)	(2002)	(2001)	(2001)	(2001)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1995 - 2003
ANNUAL TOTAL	9,116.68	29,975.29
ANNUAL MEAN	25.0	82.1	108
HIGHEST ANNUAL MEAN			192 1997
LOWEST ANNUAL MEAN			25.1 2002
HIGHEST DAILY MEAN	247 Apr 16	998 May 18	1,870 May 4, 1998
LOWEST DAILY MEAN	0.27 Oct 20	0.27 Oct 20	0.15 Sep 3, 2001
ANNUAL SEVEN-DAY MINIMUM	0.32 Oct 15	0.32 Oct 15	0.28 Aug 30, 2001
MAXIMUM PEAK FLOW		1,160 May 16	2,430 May 8, 1997
MAXIMUM PEAK STAGE		4.88 May 16	a6.83 May 8, 1997
ANNUAL RUNOFF (AC-FT)	18,080	59,460	78,560
10 PERCENT EXCEEDS	89	382	379
50 PERCENT EXCEEDS	7.0	2.0	14
90 PERCENT EXCEEDS	1.0	1.0	1.6

e Estimated. a Maximum gage height, 8.00 ft, Dec 29, 1996, backwater from ice.