USGS Water-Year Summary 2021
09057500 BLUE RIVER BELOW GREEN MOUNTAIN RESERVOIR, CO
LOCATION - Lat 39°52'49", long 106°20'00" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.15, T.2 S., R.80 W., Summit County, CO, Hydrologic Unit 14010002, on left bank 0.3 mi upstream from Elliott Creek, 0.3 mi downstream from Green Mountain Dam, and 13 mi southeast of Kremmling.
DRAINAGE AREA - 597 mi². includes 14.3 mi² of Elliott Creek above diversion for Elliott Creek Feeder Canal.
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - October 1937 to current year. Prior to October 1943, published as Blue River below Green Mountain Reservoir, near Kremmling. Statistical summary computed for 1943 to current year, subsequent to completion of Green Mountain Reservoir.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 7,682.66 ft above NGVD of 1929, (levels by U.S. Bureau of Reclamation). Prior to Oct. 1, 1951, water-stage recorder at site 3.7 mi downstream at different datum.
EXTREMES FOR PERIOD PRIOR TO REGULATION - Minimum daily discharge (prior to Green Mountain Reservoir), 80 ft³/s, Feb 18-24, 1938, Feb 18-19, 1940.