ARKANSAS RIVER BASIN

07081200 ARKANSAS RIVER NEAR LEADVILLE, CO

LOCATION.--Lat 39°15'26", long 106°20'35", in NW14NW14 sec.21, T.9 S., R.80 W., Lake County, Hydrologic Unit 11020001, on right bank 500 ft downstream from confluence of East Fork Arkansas River and Tennessee Creek, 0.5 mi downstream from highway bridge, and 2.8 mi northwest of Leadville.

DRAINAGE AREA.--98.8 mi2.

PERIOD OF RECORD.--October 1967 to September 1983, April 1990 to current year. Daily record of 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=07081200

REVISED RECORDS.--WDR CO-91-1: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 9,730 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by transmountain diversions (see elsewhere in this report) and diversions for irrigation and municipal use. Several measurements of water temperature and specific conductance 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	22	18	e16	e13	e12	e13	15	57	723	136	40	35
2	24	18	e16	e14	e12	e12	16	53	579	126	37	30
3	28	17	e15	e14	e12	e12	15	51	464	122	36	29
4	28	16	e16	e14	e12	e12	14	55	404	116	41	30
5	25	16	e16	e14	e13	e12	13	48	370	109	37	29
6	24	15	e16	e14	e13	e12	13	41	309	102	36	37
7	24	15	e15	e14	e12	13	13	39	283	96	36	45
8	22	16	e15	e13	e12	12	24	40	250	91	37	46
9	21	16	e15	e13	e12	12	15	40	250	87	36	47
10	20	17	e14	e13	e12	12	19	39	277	81	35	52
11	20	17	e14	e13	e12	12	22	35	283	76	33	51
12	19	e17	e14	e13	e12	13	24	38	268	73	33	46
13	19	e17	e15	e13	e12	13	26	55	300	70	31	41
14	18	e17	e15	e13	e12	13	29	64	252	68	31	39
15	20	e16	e15	e13	e12	13	27	86	248	65	28	36
16	19	e16	e15	e13	e12	13	27	96	251	64	28	34
17	18	e17	e15	e12	e12	13	31	136	224	64	37	32
18	18	e17	e14	e12	e12	13	31	163	223	61	41	31
19	18	e16	e14	e12	e12	13	29	180	225	61	37	30
20	17	e16	e14	e12	e12	e13	28	164	229	59	31	30
21	17	e16	e14	e12	e12	13	29	164	205	60	28	28
22	17	e17	e14	e11	e13	13	33	206	192	54	28	28
23	19	e16	e14	e12	e13	14	33	265	183	51	33	27
24	18	e17	e13	e12	e12	14	29	312	173	48	38	25
25	17	e17	e13	e12	e12	14	32	354	163	47	42	25
26	17	e17	e13	e12	e12	13	42	337	150	51	43	24
27	19	e17	e13	e12	e12	e14	55	376	149	59	35	24
28	19	e17	e13	e12	e13	e14	63	536	146	56	33	24
29	18	e17	e13	e12	---	e14	70	634	145	50	31	23
30	17	e17	e13	e12	---	e15	70	751	143	48	33	23
31	18	---	e13	e12	---	e15	---	622	---	43	40	---
TOTAL	620	498	445	393	341	404	887	6,037	8,061	2,294	1,085	1,001
MEAN	20.0	16.6	14.4	12.7	12.2	13.0	29.6	195	269	74.0	35.0	33.4
MAX	28	18	16	14	13	15	70	751	723	136	43	52
MIN	17	15	13	11	12	12	13	35	143	43	28	23
AC-FT	1,230	988	883	780	676	801	1,760	11,970	15,990	4,550	2,150	1,990
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 2003, BY WATER YEAR (WY)
MEAN	26.6	21.2	16.6	14.7	14.4	15.2	30.8	169	336	132	59.2	34.3
MAX	38.3	28.9	21.7	19.0	20.5	20.8	52.9	412	707	382	138	55.8
(WY)	(1971)	(1971)	(1983)	(1996)	(1973)	(1971)	(1989)	(1996)	(1997)	(1995)	(1997)	(1982)
MIN	16.5	11.6	11.6	9.15	7.93	8.82	12.7	55.3	72.7	23.8	12.4	14.8
(WY)	(1978)	(1977)	(1978)	(1977)	(1978)	(1974)	(1970)	(1981)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1968 - 2003
ANNUAL TOTAL	10,432.7	22,066
ANNUAL MEAN	28.6	60.5	73.3
HIGHEST ANNUAL MEAN			120 1997
LOWEST ANNUAL MEAN			29.5 2002
HIGHEST DAILY MEAN	128 Jun 1	751 May 30	1,120 Jun 8, 1997
LOWEST DAILY MEAN	8.8 Sep 5	11 Jan 22	a7.0 Feb 3, 1978
ANNUAL SEVEN-DAY MINIMUM	9.1 Sep 2	12 Jan 17	7.0 Feb 3, 1978
MAXIMUM PEAK FLOW		955 May 30	b1,360 Jun 9, 1997
MAXIMUM PEAK STAGE		4.04 May 30	c4.38 Jun 9, 1997
ANNUAL RUNOFF (AC-FT)	20,690	43,770	53,110
10 PERCENT EXCEEDS	71	164	203
50 PERCENT EXCEEDS	17	21	25
90 PERCENT EXCEEDS	13	12	13

e Estimated. a Also occurred Feb 4-20, 1978. b From rating curve extended above 964 ft3/s. c Maximum gage height, 4.47 ft, Jun 15, 1978.