USGS Water-Year Summary 2023
11421725 Alta Powerhouse near Dutch Flat, CA
LOCATION - Lat 39°12'57", long 120°48'09" referenced to North American Datum of 1927, Placer County, CA, Hydrologic Unit 18020126, on right bank of unnamed tributary to Bear River, 400 ft upstream from intake to Boardman Canal, and 2.0 mi northeast of Dutch Flat.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1986 to current year. Unpublished records for water years 1981-86 available in the files of the U.S. Geological Survey.
GAGE - Discharge computed from powerplant output. Elevation of powerplant is 2,720 ft above NGVD of 1929, from topographic map.
COOPERATION - Records were collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2310.