USGS Water-Year Summary 2020
09165000 DOLORES RIVER BELOW RICO, CO
LOCATION - Lat 37°38'20", long 108°03'35" referenced to North American Datum of 1927, Dolores County, CO, Hydrologic Unit 14030002, on left bank at upstream side of Montelores bridge, northwest of State Highway 145 at Dolores-Montezuma County line, 0.5 mi upstream from Ryman Creek, and 4.0 mi southwest of Rico.
DRAINAGE AREA - 106 mi².
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - October 1951 to September 1996, October 1998 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 8,422.23 ft above NGVD of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Greatest flood since at least 1885 occurred Oct. 5, 1911.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,170 ft³/s, May 24, 1984, from rating curve extended above 1,620 ft³/s, gage height, 5.95 ft.