DOLORES RIVER BASIN

09166950 LOST CANYON CREEK NEAR DOLORES, CO

LOCATION.--Lat 37°26'46", long 108°28'07", in SE14SE14 sec.23, T.37N., R.15W., Montezuma County, Hydrologic Unit 14030002, on right bank 2.5 mi southeast of Dolores and 3.0 mi upstream from mouth.

DRAINAGE AREA.--71.3 mi2.

PERIOD OF RECORD.--April 1984 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09166950

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 7,030 ft above NGVD of 1929, from topographic map.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Several small storage reservoirs and diversions for irrigation of about 4,700 acres in the San Juan River basin and one diversion for irrigation of about 10 acres in Lost Canyon in the Dolores River basin. 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	0.00	0.00	0.00	0.47	e1.2	12	21	0.66	0.00	0.21	0.00
2	0.00	0.00	0.00	0.00	0.60	e1.1	16	11	0.49	0.00	0.20	0.00
3	0.04	0.00	0.00	0.00	0.64	e1.2	12	5.8	0.37	0.00	0.22	0.00
4	0.00	0.00	0.00	0.00	0.58	1.2	9.3	4.6	0.26	0.00	0.14	0.00
5	0.00	0.00	0.00	0.00	0.56	1.4	8.4	3.2	0.17	0.00	0.07	0.00
6	0.00	0.00	0.00	0.00	0.51	1.3	7.3	2.5	0.11	0.00	0.01	0.00
7	0.00	0.00	0.00	0.00	0.44	1.4	6.5	2.1	0.07	0.00	0.00	0.00
8	0.00	0.00	0.00	e0.00	0.31	1.5	5.3	1.9	0.03	0.00	0.00	e0.00
9	0.00	0.01	0.00	e0.00	0.22	1.8	6.8	1.8	0.02	0.00	0.00	0.80
10	0.00	0.00	0.00	e0.00	0.20	2.1	12	1.7	0.01	0.00	0.00	0.04
11	0.00	0.00	0.00	0.00	0.22	2.7	18	1.6	0.00	0.00	0.00	0.00
12	0.00	0.00	0.00	0.00	0.23	3.4	22	1.5	0.00	0.00	0.00	0.00
13	0.00	0.00	0.00	0.00	0.76	4.8	20	1.4	0.00	0.00	0.00	0.00
14	0.00	0.00	0.00	0.00	e1.2	5.8	98	1.5	0.00	0.00	0.00	0.00
15	0.00	0.00	0.00	0.00	e1.5	7.1	111	1.7	0.00	0.00	0.00	0.00
16	0.00	0.00	0.00	0.00	e1.6	9.0	40	2.0	0.00	0.00	0.00	0.00
17	0.00	0.00	0.00	0.00	e1.8	11	39	2.1	0.00	0.00	0.00	0.00
18	0.00	0.00	0.00	0.00	e1.9	10	48	2.3	0.00	0.02	0.00	0.00
19	0.00	0.00	0.00	0.00	e1.8	10	14	2.2	0.00	0.23	0.00	e0.00
20	0.00	0.00	0.00	0.00	1.6	8.7	6.9	2.0	0.00	0.27	0.00	0.00
21	0.00	0.00	0.00	0.00	1.4	8.5	25	1.8	0.00	0.28	0.00	0.00
22	0.00	0.00	0.00	0.00	1.3	11	41	1.8	0.00	0.29	0.00	0.00
23	0.00	0.00	0.00	0.00	1.2	15	19	1.7	0.00	0.18	0.00	0.00
24	0.00	0.00	0.00	0.00	1.1	20	6.3	1.6	0.00	0.08	0.00	0.00
25	0.00	0.00	0.00	0.00	1.2	22	13	1.6	0.00	0.09	0.00	0.00
26	0.00	0.00	0.00	0.26	1.2	25	52	1.5	0.00	0.12	0.00	0.00
27	0.00	0.00	0.00	0.25	1.2	22	96	1.3	0.00	0.35	0.00	0.00
28	0.00	0.00	0.00	0.28	e1.2	15	80	1.2	0.00	0.59	0.00	0.00
29	0.00	0.00	0.00	0.30	---	12	75	2.0	0.00	0.63	0.00	0.00
30	0.00	0.00	0.00	0.38	---	8.7	29	1.2	0.00	0.27	0.00	0.00
31	0.00	---	0.00	0.43	---	e8.0	---	0.84	---	0.24	0.00	---
TOTAL	0.04	0.01	0.00	1.90	26.94	253.9	948.8	90.44	2.19	3.64	0.85	0.84
MEAN	0.001	0.000	0.000	0.061	0.96	8.19	31.6	2.92	0.073	0.12	0.027	0.028
MAX	0.04	0.01	0.00	0.43	1.9	25	111	21	0.66	0.63	0.22	0.80
MIN	0.00	0.00	0.00	0.00	0.20	1.1	5.3	0.84	0.00	0.00	0.00	0.00
AC-FT	0.08	0.02	0.00	3.8	53	504	1,880	179	4.3	7.2	1.7	1.7
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1984 - 2003, BY WATER YEAR (WY)
MEAN	2.09	3.97	1.94	1.42	2.19	31.1	105	98.3	8.95	0.23	0.59	1.00
MAX	17.7	45.2	14.8	5.00	6.85	110	265	293	91.2	0.96	7.00	6.05
(WY)	(1987)	(1987)	(1987)	(1987)	(1997)	(1997)	(1987)	(1993)	(1995)	(1999)	(1999)	(1999)
MIN	0.000	0.000	0.000	0.000	0.000	0.69	0.79	0.13	0.000	0.000	0.000	0.000
(WY)	(1990)	(1990)	(1990)	(1990)	(1990)	(2002)	(2002)	(2002)	(2002)	(2002)	(1990)	(1984)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1984 - 2003
ANNUAL TOTAL	63.74	1,329.55
ANNUAL MEAN	0.17	3.64	21.0
HIGHEST ANNUAL MEAN			49.9 1993
LOWEST ANNUAL MEAN			0.17 2002
HIGHEST DAILY MEAN	1.3 Apr 17	111 Apr 15	555 Apr 2, 1986
LOWEST DAILY MEAN	0.00 Jan 1	0.00 Oct 1	a0.00 Jul 11, 1984
ANNUAL SEVEN-DAY MINIMUM	0.00 May 18	0.00 Oct 4	a0.00 Aug 30, 1984
MAXIMUM PEAK FLOW		169 Apr 27	744 Apr 2, 1986
MAXIMUM PEAK STAGE		4.36 Apr 27	7.23 Apr 2, 1986
ANNUAL RUNOFF (AC-FT)	126	2,640	15,240
10 PERCENT EXCEEDS	0.67	9.1	68
50 PERCENT EXCEEDS	0.00	0.00	0.90
90 PERCENT EXCEEDS	0.00	0.00	0.00

e Estimated. a No flow many days each year.