GREEN RIVER BASIN

09246920 FORTIFICATION CREEK NEAR FORTIFICATION, CO

LOCATION.--Lat 40°44'38", long 107°32'25", in NW14NW14 sec.18, T.9 N., R.90 W., Moffat County, Hydrologic Unit 14050001, on right bank 10 ft downstream from County Road 108, and 4.5 mi south of Fortification.

DRAINAGE AREA.--40 mi2.

PERIOD OF RECORD.--October 1984 to September 1991, September 2002 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09246920

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 6,520 ft above NGVD of 1929, from topographic map. Prior to Sept. 5, 2002 at site 30 ft downsteam at datum 3.00 ft lower.

REMARKS.--Records fair except for estimated daily discharges, and July 18 to Sept. 30, which are poor. Natural flow of stream affected by diversions for irrigation of hay fields above station. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

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	0.00	1.1	2.0	2.0	2.5	3.0	12	26	63	7.5	0.07	0.01
2	0.07	1.2	2.6	2.1	4.8	3.1	13	e26	48	8.7	0.05	0.00
3	0.02	1.2	4.1	2.1	8.0	2.9	11	e26	36	8.1	0.04	0.00
4	0.00	1.1	2.1	2.1	2.5	2.7	5.6	e26	30	8.3	0.03	0.01
5	0.00	1.5	2.0	2.1	2.6	2.6	5.0	e26	25	7.3	0.02	0.01
6	0.00	1.4	2.7	2.2	2.4	2.6	4.3	e26	23	6.0	0.01	0.01
7	0.00	1.3	4.5	2.1	2.4	2.5	3.6	e26	20	5.5	0.00	0.01
8	0.00	1.2	5.8	2.1	2.1	2.4	3.7	24	19	5.1	0.00	0.01
9	0.00	1.3	5.2	2.0	2.0	2.7	4.5	23	19	4.5	0.01	0.01
10	0.01	1.1	3.8	1.9	2.2	3.2	10	23	21	5.2	0.01	0.01
11	0.01	0.98	2.3	1.9	2.3	8.3	16	21	22	2.0	0.01	0.02
12	0.02	e1.8	2.4	1.9	2.2	15	19	20	19	1.4	0.01	0.01
13	0.02	e1.7	2.7	2.0	2.0	43	18	36	16	1.8	0.02	0.01
14	0.02	e1.6	2.9	2.0	3.2	68	23	47	15	1.4	0.02	0.01
15	0.02	2.1	2.8	2.0	e3.3	67	23	63	16	1.2	0.01	0.02
16	0.02	1.9	2.3	2.0	e3.3	41	16	60	20	0.97	0.01	0.02
17	0.16	3.3	2.2	2.1	3.4	32	15	75	22	0.89	0.01	0.03
18	0.21	3.9	2.3	2.0	2.7	16	15	74	17	0.83	0.02	0.03
19	0.26	2.6	2.2	1.9	2.7	12	13	72	16	0.72	0.02	0.04
20	0.39	3.0	2.2	1.8	3.2	13	12	61	15	0.46	0.03	0.04
21	0.46	3.3	2.3	1.7	2.9	17	12	60	14	0.49	0.02	0.04
22	0.54	2.8	2.4	1.7	2.8	22	14	61	13	0.39	0.04	0.04
23	0.96	2.2	2.3	1.7	2.9	20	18	66	12	0.35	0.06	0.04
24	1.3	2.3	2.2	1.7	3.3	15	48	73	14	0.32	0.02	0.04
25	1.2	3.1	2.1	1.7	3.3	6.7	68	72	13	0.30	0.01	0.03
26	1.1	1.0	2.0	1.8	3.3	6.3	77	63	13	0.23	0.01	0.03
27	1.2	1.0	2.0	2.0	3.1	7.1	51	62	12	0.19	0.00	0.03
28	1.1	1.6	2.0	2.0	3.0	6.7	38	71	11	0.13	0.00	0.03
29	1.1	1.8	2.0	2.0	---	5.3	38	72	9.7	0.12	0.01	0.02
30	1.1	3.5	2.0	2.1	---	3.9	33	67	8.3	0.10	0.01	0.01
31	1.0	---	2.0	2.2	---	8.6	---	64	---	0.08	0.01	---
TOTAL	12.29	57.88	82.4	60.9	84.4	461.6	639.7	1,512	602.0	80.57	0.59	0.62
MEAN	0.40	1.93	2.66	1.96	3.01	14.9	21.3	48.8	20.1	2.60	0.019	0.021
MAX	1.3	3.9	5.8	2.2	8.0	68	77	75	63	8.7	0.07	0.04
MIN	0.00	0.98	2.0	1.7	2.0	2.4	3.6	20	8.3	0.08	0.00	0.00
AC-FT	24	115	163	121	167	916	1,270	3,000	1,190	160	1.2	1.2
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2003, BY WATER YEAR (WY)
MEAN	2.70	2.60	2.09	2.26	5.60	17.4	34.7	40.8	18.9	2.09	0.36	0.66
MAX	7.48	4.90	4.45	4.64	26.3	33.4	87.0	78.5	58.3	6.41	0.94	1.81
(WY)	(1985)	(1985)	(1985)	(1985)	(1986)	(1986)	(1985)	(1986)	(1986)	(1986)	(1985)	(1986)
MIN	0.40	1.31	1.12	1.29	1.44	2.84	13.4	9.69	6.97	0.074	0.000	0.000
(WY)	(2003)	(1991)	(1988)	(1988)	(1989)	(1988)	(1991)	(1989)	(1987)	(1988)	(1988)	(1990)

SUMMARY STATISTICS		FOR 2003 WATER YEAR	WATER YEARS 1985 - 2003
ANNUAL TOTAL		3,594.95
ANNUAL MEAN		9.85	10.8
HIGHEST ANNUAL MEAN			21.6 1986
LOWEST ANNUAL MEAN			3.64 1989
HIGHEST DAILY MEAN		77 Apr 26	208 Mar 25, 1985
LOWEST DAILY MEAN		0.00 Oct 1	a0.00 Jul 12, 1988
ANNUAL SEVEN-DAY MINIMUM		0.00 Oct 4	0.00 Jul 12, 1988
MAXIMUM PEAK FLOW		161 Apr 25	465 Mar 25, 1985
MAXIMUM PEAK STAGE		3.81 Apr 25	4.64 Mar 25, 1985
ANNUAL RUNOFF (AC-FT)		7,130	7,860
10 PERCENT EXCEEDS		26	34
50 PERCENT EXCEEDS		2.2	2.3
90 PERCENT EXCEEDS		0.01	0.14

e Estimated. a No flow many days, most years.