ARKANSAS RIVER BASIN

07079300 EAST FORK ARKANSAS RIVER AT HIGHWAY 24 NEAR LEADVILLE, CO

LOCATION.--Lat 39°16'21", long 106°18'21", in NW14NW14 sec.14, T.9 S., R.80 W., Lake County, Hydrologic Unit 11020001, on right bank 20 ft downstream from U.S. Highway 24, 0.4 mi downstream from Leadville Mine Drainage Tunnel, 1.5 mi northwest of Leadville, and 2.2 mi upstream from Tennessee Creek.

DRAINAGE AREA.--49.9 mi2.

PERIOD OF RECORD.--May 1990 to current year. Daily record for water temperature, specific conductance, and pH available, May 1990 to September 1996. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07079300

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 9,900 ft above NGVD of 1929, from topographic map.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural flow of stream affected by transmountain diversions (see elsewhere in this report). 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	13	12	e10	e9.2	e8.7	e7.0	9.0	15	314	83	28	29
2	14	12	e10	e9.0	e8.6	e6.9	9.0	13	315	81	27	26
3	15	11	e10	e8.8	e9.0	e6.8	8.8	14	292	78	28	25
4	15	11	e10	e8.7	e9.0	e6.7	8.7	15	248	73	34	25
5	14	11	e10	e8.7	e9.5	e6.6	8.6	15	219	69	29	24
6	14	e11	e10	e8.7	e9.3	e6.5	8.7	15	168	66	27	29
7	13	e11	e9.9	e8.6	e9.1	e6.6	8.9	15	155	60	27	37
8	13	e11	e9.8	e8.5	e9.0	e6.5	9.4	15	145	57	26	37
9	13	e11	e9.8	e8.4	e9.0	e6.6	9.4	15	150	55	26	38
10	12	e11	e9.7	e8.4	e8.9	e6.7	11	15	146	50	25	41
11	12	e11	e9.6	e8.3	e8.8	e6.9	12	14	162	48	25	39
12	12	e11	e9.5	e8.3	e8.6	e7.2	12	14	167	45	26	35
13	11	e11	e9.5	e8.4	e8.4	e7.4	13	18	170	44	24	33
14	11	e11	e9.5	e8.5	e7.9	e7.3	13	21	158	43	24	31
15	11	e11	e9.4	e8.5	e7.9	e7.3	12	30	156	42	23	29
16	11	e11	e9.3	e8.6	e7.7	7.3	11	35	154	42	23	28
17	11	e11	e9.3	e8.7	e7.6	7.7	12	53	140	42	25	26
18	11	e11	e9.3	e8.7	e7.4	7.8	11	65	137	41	27	26
19	11	e11	e9.3	e8.6	e7.4	7.5	11	66	130	41	26	25
20	11	e11	e9.3	e8.6	e7.4	e7.8	11	66	126	40	23	25
21	11	e11	e9.3	e8.5	e7.5	e8.0	11	75	118	39	22	23
22	11	e11	e9.3	e8.5	e7.4	7.8	12	105	107	36	21	23
23	12	e11	e9.3	e8.4	e7.4	7.9	12	144	106	34	23	23
24	12	e11	e9.3	e8.4	e7.4	7.9	12	187	103	33	26	22
25	12	e11	e9.2	e8.5	e7.1	8.2	14	249	101	32	27	21
26	12	e11	e9.2	e8.6	e7.3	8.1	15	241	88	33	29	21
27	12	e11	e9.2	e8.7	e7.2	8.3	15	325	89	34	26	21
28	12	e11	e9.2	e8.8	e7.1	e8.4	14	460	89	38	25	21
29	11	e10	e9.2	e8.8	---	e8.5	14	459	89	35	23	20
30	11	e10	e9.2	e8.7	---	e8.6	15	209	84	32	27	20
31	12	---	e9.2	e8.7	---	e8.7	---	236	---	29	33	---
TOTAL	376	330	294.8	266.8	227.6	231.5	343.5	3,219	4,626	1,475	805	823
MEAN	12.1	11.0	9.51	8.61	8.13	7.47	11.4	104	154	47.6	26.0	27.4
MAX	15	12	10	9.2	9.5	8.7	15	460	315	83	34	41
MIN	11	10	9.2	8.3	7.1	6.5	8.6	13	84	29	21	20
AC-FT	746	655	585	529	451	459	681	6,380	9,180	2,930	1,600	1,630
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 2003, BY WATER YEAR (WY)
MEAN	18.5	14.4	12.0	10.3	9.91	10.1	13.8	95.1	206	88.0	38.5	24.4
MAX	23.4	18.1	15.4	13.0	13.3	13.0	19.8	205	404	266	75.1	32.2
(WY)	(2000)	(1996)	(1996)	(1996)	(1997)	(1997)	(1996)	(1996)	(1996)	(1995)	(1995)	(1995)
MIN	12.1	10.8	9.51	8.61	7.10	7.47	10.5	38.4	39.0	14.7	10.8	10.9
(WY)	(2003)	(1992)	(2003)	(2003)	(1993)	(2003)	(1993)	(1995)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1990 - 2003
ANNUAL TOTAL	5,828.9	13,018.2
ANNUAL MEAN	16.0	35.7	45.7
HIGHEST ANNUAL MEAN			73.0 1996
LOWEST ANNUAL MEAN			16.8 2002
HIGHEST DAILY MEAN	69 May 21	460 May 28	811 Jun 8, 1997
LOWEST DAILY MEAN	e7.3 Mar 6	e6.5 Mar 6	6.0 Dec 9, 1994
ANNUAL SEVEN-DAY MINIMUM	e7.5 Mar 1	e6.6 Mar 4	e6.6 Mar 4, 2003
MAXIMUM PEAK FLOW		760 May 29	a1,010 Jun 8, 1997
MAXIMUM PEAK STAGE		4.07 May 29	b4.23 Jun 8, 1997
ANNUAL RUNOFF (AC-FT)	11,560	25,820	33,090
10 PERCENT EXCEEDS	36	89	124
50 PERCENT EXCEEDS	11	12	16
90 PERCENT EXCEEDS	8.8	7.9	9.3

e Estimated. a From rating curve extended above 517 ft3/s. b Maximum gage height, 4.41 ft, Jun 26, 1999.