WILLIAMS FORK BASIN

09035900 SOUTH FORK WILLIAMS FORK NEAR LEAL, CO

LOCATION.--Lat 39°47'45", long 106°01'48", in NE14 sec.17, T.3 S., R.77 W., Grand County, Hydrologic Unit 14010001, on left bank 800 ft upstream from county road bridge, 0.6 mi upstream from mouth, and 1.2 mi southeast of Leal.

DRAINAGE AREA.--27.3 mi2.

PERIOD OF RECORD.--October 1965 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09035900

GAGE.--Water-stage recorder. Elevation of gage is 8,950 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for high flow period, May 22 to June 26, which is fair, and estimated daily discharges, which are poor. No diversion upstream from 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	9.5	e8.0	e8.5	e6.4	e7.0	e7.7	e8.9	16	321	123	26	23
2	9.8	e8.1	e8.2	e6.6	e7.2	e7.9	e9.3	15	254	115	25	22
3	11	e8.0	e7.9	e6.7	e7.0	e7.7	e9.8	15	213	107	32	22
4	10	e7.6	e8.0	e6.8	e6.9	e7.6	e9.8	16	187	99	34	22
5	10	e7.8	e7.8	e6.4	e7.2	e7.7	e9.7	15	173	91	26	21
6	9.7	e7.9	e7.6	e6.7	e7.1	e7.7	e9.6	15	153	85	25	24
7	9.7	e8.1	e7.6	e6.7	e7.2	e7.7	e9.4	15	145	81	25	26
8	9.7	e7.9	e7.5	e7.1	e7.3	e7.6	e9.0	15	140	75	27	26
9	9.3	e8.0	e7.4	e7.1	e7.2	e7.6	e9.3	15	144	71	25	33
10	8.9	e8.1	e7.3	e6.9	e7.4	e7.6	e9.7	15	154	66	23	29
11	8.9	e8.3	e7.1	e6.7	e7.3	e7.7	e10	14	158	61	22	29
12	8.6	e8.3	e7.0	e7.1	e7.5	e7.6	e11	16	158	57	23	28
13	7.9	e8.3	e7.1	e7.1	e7.5	e7.7	e12	23	154	53	24	27
14	8.2	e8.1	e7.2	e7.4	e7.5	e7.7	e14	31	158	51	22	25
15	8.2	e7.9	e7.4	e7.4	e7.4	e7.7	e16	43	162	51	21	24
16	8.2	e7.6	e7.3	e6.9	e7.5	e7.5	e14	61	163	50	25	23
17	8.0	e7.7	e7.4	e7.1	e7.7	e7.6	e13	89	164	48	43	23
18	8.0	e7.6	e7.4	e7.2	e7.7	e7.6	e12	103	168	46	44	23
19	7.9	e7.5	e7.4	e7.5	e7.5	e7.6	e11	108	175	46	31	22
20	7.8	e7.7	e7.0	e7.5	e7.7	e7.7	e10	100	172	43	26	22
21	7.8	e7.8	e7.0	e7.1	e7.8	e8.0	e11	105	164	41	24	21
22	8.0	e7.7	e6.8	e6.8	e7.9	e7.7	e11	121	161	39	23	20
23	8.6	e8.0	e6.4	e6.8	e7.7	e7.6	e12	135	160	35	24	19
24	8.4	e8.0	e6.2	e6.8	e7.5	e7.6	16	172	157	33	27	19
25	8.2	e8.0	e6.0	e6.8	e7.8	e7.5	19	205	154	32	30	18
26	7.9	e7.9	e6.0	e6.6	e7.8	e7.9	14	221	150	32	27	18
27	8.9	e8.2	e5.7	e6.9	e7.7	e8.1	16	244	144	30	25	18
28	8.1	e8.2	e5.7	e7.1	e7.6	e7.9	16	277	140	28	24	17
29	8.3	e8.3	e6.1	e6.8	---	e8.0	17	272	137	28	23	17
30	e7.8	e8.4	e6.4	e6.6	---	e8.2	17	258	130	27	26	16
31	e8.3	---	e6.2	e6.8	---	e8.5	---	263	---	27	26	---
TOTAL	269.6	239.0	218.6	214.4	208.6	240.2	366.5	3,013	5,013	1,771	828	677
MEAN	8.70	7.97	7.05	6.92	7.45	7.75	12.2	97.2	167	57.1	26.7	22.6
MAX	11	8.4	8.5	7.5	7.9	8.5	19	277	321	123	44	33
MIN	7.8	7.5	5.7	6.4	6.9	7.5	8.9	14	130	27	21	16
AC-FT	535	474	434	425	414	476	727	5,980	9,940	3,510	1,640	1,340
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 2003, BY WATER YEAR (WY)
MEAN	13.4	10.9	9.25	7.80	7.40	7.45	11.6	58.8	155	70.7	25.8	16.6
MAX	24.0	16.7	21.1	12.8	11.4	11.5	25.0	118	243	215	63.3	32.3
(WY)	(1985)	(1998)	(1986)	(1998)	(1996)	(1996)	(1971)	(1996)	(1984)	(1983)	(1983)	(1984)
MIN	8.70	3.71	3.46	2.95	2.90	3.19	4.47	18.4	44.3	13.6	9.58	8.78
(WY)	(2003)	(1967)	(1967)	(1967)	(1967)	(1967)	(1967)	(1995)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1966 - 2003
ANNUAL TOTAL	5,251.4	13,058.9
ANNUAL MEAN	14.4	35.8	32.9
HIGHEST ANNUAL MEAN			54.8 1984
LOWEST ANNUAL MEAN			14.9 2002
HIGHEST DAILY MEAN	81 Jun 2	321 Jun 1	404 Jun 17, 1995
LOWEST DAILY MEAN	e5.7 Dec 27	e5.7 Dec 27	2.6 Mar 6, 1967
ANNUAL SEVEN-DAY MINIMUM	e6.0 Dec 23	e6.0 Dec 23	2.8 Feb 28, 1967
MAXIMUM PEAK FLOW		415 May 27	a574 Jun 17, 1995
MAXIMUM PEAK STAGE		3.87 May 27	b4.17 Jun 17, 1995
ANNUAL RUNOFF (AC-FT)	10,420	25,900	23,840
10 PERCENT EXCEEDS	31	138	95
50 PERCENT EXCEEDS	8.3	9.7	12
90 PERCENT EXCEEDS	7.6	7.1	6.7

e Estimated. a From rating curve extended above 256 ft3/s. b Maximum gage height, 4.22 ft, Nov 22, 1979, backwater from ice.