Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
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.
REVISIONS HISTORY - WDR CO-90-2: 1989. WDR-US-2011: Drainage area.
SURFACE-WATER RECORDS
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.
REMARKS - Water year 2014; records fair except for estimated daily discharges, which are poor. Water year 2015; records fair except for estimated daily discharges, which are poor. Water year 2016; records fair except for estimated daily discharges, which are poor. Water year 2017; records good except for estimated daily discharges, which are poor. Water year 2018; records good except for estimated daily discharges, which are poor. Water year 2019; records good except for estimated daily discharges, which are poor. Water year 2020; records good except for estimated daily discharges, which are poor. Water year 2021; records fair except for estimated daily discharges, which are poor. Water year 2022; records fair except for estimated daily discharges, which are poor. Water year 2023; records good except for estimated daily discharges, which are poor. Diversions upstream from station for irrigation of about 80,000 acres, of which about 74,760 acres are in the San Juan River Basin. Flow regulated by McPhee Reservoir (capacity, 381,000 acre-ft), since Mar. 19, 1984.
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.
