ARKANSAS RIVER BASIN

07108900 ST. CHARLES RIVER AT VINELAND, CO

LOCATION.--Lat 38°14'44", long 104°29'09", in NE14SW14 sec.6, T.21 S., R.63 W., Pueblo County, Hydrologic Unit 11020002, on left bank at left downstream end of downstream bridge on U.S. Highway 50 Business, 1.6 mi west of Vineland, and 3.0 mi upstream from mouth.

DRAINAGE AREA.--474 mi2.

PERIOD OF RECORD.--October 1978 to current year. Records for October 1967 to September 1974 (discharge measurements only prior to March 1968), published as St. Charles River near Vineland (station 07108800) at site 2.6 mi upstream, are not equivalent because of tributary inflow. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07108900

GAGE.--Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 4,581.58 ft above NGVD of 1929, (Colorado Division of Highways benchmark). Prior to May 10, 2001, on right bank at same datum.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoir, diversions for irrigation and industrial use, ground-water withdrawals, and return flows from irrigated areas. 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.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge since at least 1901, 56,000 ft3/s, June 3, 1921, gage height unknown, at site 5.0 mi upstream.

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	4.2	4.9	4.1	6.2	3.9	e4.0	3.7	36	83	7.8	3.3	6.2
2	6.2	5.1	4.3	6.1	3.7	3.9	3.7	45	79	6.4	3.1	5.5
3	6.6	4.9	4.7	5.9	3.6	3.8	3.1	42	72	4.6	3.1	4.9
4	4.6	4.8	4.7	6.1	3.9	3.6	34	39	68	4.2	3.2	4.7
5	5.0	4.6	4.5	6.4	3.8	3.9	46	39	77	3.9	3.1	3.4
6	6.1	4.6	4.4	6.3	3.6	3.9	42	39	86	3.6	3.1	3.2
7	5.6	4.6	4.1	11	e3.4	3.6	31	39	78	3.7	3.0	3.8
8	5.2	4.1	4.5	13	e3.4	3.6	21	36	75	3.4	3.1	3.4
9	4.9	4.4	4.4	12	e3.7	3.6	17	36	69	3.4	3.2	3.5
10	4.7	4.0	4.3	10	e4.0	3.7	14	34	51	3.6	161	3.3
11	4.3	4.3	4.5	11	3.8	4.0	8.0	34	45	3.5	8.7	3.2
12	5.2	3.3	4.1	11	3.8	3.9	7.6	31	42	3.0	3.8	3.2
13	5.2	3.2	4.7	9.1	3.9	3.7	5.2	32	44	3.0	3.0	3.2
14	5.0	4.1	5.4	8.2	4.2	3.4	5.0	35	41	3.3	3.7	3.6
15	4.3	6.6	6.0	8.3	3.7	6.1	3.7	41	34	3.4	3.2	3.3
16	5.2	4.3	5.8	5.2	3.6	3.1	15	51	33	3.4	3.3	3.1
17	5.2	4.2	6.1	4.1	3.3	3.3	20	48	33	3.2	2.9	3.1
18	5.3	4.1	5.6	e3.8	3.7	3.8	19	44	35	3.1	3.0	3.2
19	5.2	3.9	e5.5	e3.9	4.3	4.1	29	47	69	2.6	3.0	3.2
20	5.9	4.1	e5.4	3.9	3.9	2.9	35	50	115	3.0	2.8	3.2
21	4.8	4.1	e5.8	3.9	3.6	2.9	31	49	69	3.2	2.8	3.2
22	5.2	3.9	e6.3	3.9	4.4	2.8	25	44	60	3.0	2.8	3.2
23	6.0	3.4	6.6	e3.8	e4.0	3.1	22	44	52	3.1	2.8	3.2
24	6.5	4.2	e6.2	e3.9	e3.5	3.2	24	52	37	3.0	2.8	3.3
25	6.5	3.8	e6.0	3.8	e3.5	3.0	24	70	28	2.9	2.6	3.3
26	5.9	3.8	e5.8	3.1	e4.0	2.7	23	136	20	3.0	2.9	2.9
27	7.0	e3.8	e6.0	3.4	e4.5	6.2	22	87	13	3.0	2.9	2.8
28	73	4.0	e6.3	3.9	e4.2	12	23	81	11	3.1	3.1	3.0
29	9.8	4.2	6.5	3.7	---	9.0	22	73	9.8	3.2	3.4	3.1
30	5.1	4.4	6.3	4.1	---	5.8	23	71	8.4	3.1	18	3.2
31	5.3	---	6.4	3.7	---	e4.7	---	84	---	3.2	10	---
TOTAL	239.0	127.7	165.3	192.7	106.9	131.3	602.0	1,589	1,537.2	109.9	280.7	105.4
MEAN	7.71	4.26	5.33	6.22	3.82	4.24	20.1	51.3	51.2	3.55	9.05	3.51
MAX	73	6.6	6.6	13	4.5	12	46	136	115	7.8	161	6.2
MIN	4.2	3.2	4.1	3.1	3.3	2.7	3.1	31	8.4	2.6	2.6	2.8
AC-FT	474	253	328	382	212	260	1,190	3,150	3,050	218	557	209
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1979 - 2003, BY WATER YEAR (WY)
MEAN	14.3	15.6	12.7	12.5	13.0	20.7	66.2	152	77.2	34.2	43.1	18.6
MAX	39.5	32.3	24.3	22.6	25.1	127	306	484	358	108	207	120
(WY)	(1983)	(1999)	(1998)	(1998)	(1998)	(1998)	(1987)	(1980)	(1983)	(1995)	(1982)	(1982)
MIN	3.50	4.26	5.33	6.22	3.82	4.24	4.99	3.17	2.09	1.82	2.02	3.51
(WY)	(1979)	(2003)	(2003)	(2003)	(2003)	(2003)	(2002)	(2002)	(2002)	(2002)	(2002)	(2003)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1979 - 2003
ANNUAL TOTAL	1,856.43	5,187.1
ANNUAL MEAN	5.09	14.2	40.2
HIGHEST ANNUAL MEAN			88.4 1987
LOWEST ANNUAL MEAN			5.75 2002
HIGHEST DAILY MEAN	130 Sep 14	161 Aug 10	3,150 Apr 30, 1999
LOWEST DAILY MEAN	0.61 Aug 19	2.6 Jul 19	0.25 Apr 25, 1979
ANNUAL SEVEN-DAY MINIMUM	0.69 Aug 16	2.8 Aug 20	0.69 Aug 16, 2002
MAXIMUM PEAK FLOW		1,580 Aug 10	a7,560 Aug 11, 1982
MAXIMUM PEAK STAGE		8.09 Aug 10	b12.70 Aug 11, 1982
ANNUAL RUNOFF (AC-FT)	3,680	10,290	29,120
10 PERCENT EXCEEDS	7.6	44	83
50 PERCENT EXCEEDS	4.4	4.4	14
90 PERCENT EXCEEDS	1.3	3.1	5.9

e Estimated. a From rating curve extended above 1,750 ft3/s. b Maximum gage height, 13.68 ft, Apr 30, 1999.