USGS Water-Year Summary 2021
09166500 DOLORES RIVER AT DOLORES, CO
LOCATION - Lat 37°28'21", long 108°29'49" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.10, T.37 N., R.15 W., Montezuma County, CO, Hydrologic Unit 14030002, on left bank 0.30 mi. upstream from bridge on State Highway 184 in Dolores, and 0.8 mi. upstream from Lost Canyon Creek.
DRAINAGE AREA - 504 mi².
- WSP 859: 1937. WRD Colo. 1972: Drainage area.
PERIOD OF RECORD - June 1895 to October 1903, August 1910 to November 1912, October 1921 to current year. Monthly discharge only for some periods, published in WSP 1313.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 6,940 ft above NGVD of 1929, from topographic map. See WSP 1713 or 1733 for history of changes prior to Oct. 7, 1952. Oct. 7, 1952 to Nov. 16, 1983, at site 0.4 mi downstream at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 10,000 ft³/s, Oct. 5, 1911, from rating curve extended above 2,800 ft³/s, gage height, 10.20 ft, site and datum then in use.
PERIOD OF RECORD - April 2019 to current year (seasonal records only).
INSTRUMENTATION - Tipping-bucket rain gage with satellite telemetry. Elevation of gage is 6,940 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - (seasonal only) Maximum daily precipitation, 0.49 inches, May 22, 2019.