USGS Water-Year Summary 2020
09171100 DOLORES RIVER NEAR BEDROCK, CO
LOCATION - Lat 38°21'25", long 108°49'58" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.03, T.47 N., R.18 W., Montrose County, CO, Hydrologic Unit 14030002, on right bank 2.5 mi downstream from West Paradox Creek, and 4.2 mi northeast of Bedrock.
DRAINAGE AREA - 2,147 mi².
- WDR CO-90-2: 1989. WDR-US-2011: Drainage area.
PERIOD OF RECORD - August 1971 to current year. Statistical summary computed for 1985 to current year, subsequent to regulation by McPhee Reservoir.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,910 ft above NGVD of 1929, from topographic map. Prior to Feb. 17, 1972, at site 200 ft downstream at datum 1.98 ft lower. From Feb. 17, 1972 to Aug. 16, 2000 at site 600 ft downstream at datum 3.00 ft lower.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Sept. 6, 1970, reached a stage of 11.25 ft, site and datum then in use (discharge, 5,710 ft³/s), by slope-area measurement at site 800 ft upstream.