USGS Water-Year Summary 2019
01048000 SANDY RIVER NEAR MERCER, ME
LOCATION - Lat 44°42'29", long 69°56'15" referenced to North American Datum of 1983, Somerset County, ME, Hydrologic Unit 01030003, on right bank 0.9 mi upstream from Bog Stream, 2.1 mi north of Mercer, and 8.6 mi upstream from mouth.
DRAINAGE AREA - 516 mi².
- WSP 756: 1933. WSP 1231: 1936(M). WDR ME-94-1: Drainage area. Revisions: Discharge for the period Nov. 12, 2018 to Mar. 14, 2019 was revised on Oct. 30, 2019, based on changes to the estimates for backwater due to ice.
PERIOD OF RECORD - DISCHARGE: October 1928 to September 1979, June 1987 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 197.1 ft above National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of April 1, 1987 reached a stage of 19.25 ft, from floodmarks, discharge, 51,100 ft³/s, from rating curve extended above 15,000 ft³/s on basis of records at nearby stations and slope-area measurement at gage-height 19.25 ft.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 38,600 ft³/s, Mar. 19, 1936, gage height, 16.75 ft, from rating curve extended above 15,000 ft³/s on basis of records at nearby stations and slope-area measurement at gage-height 19.25 ft; maximum gage height, 18.89 ft, Feb. 12, 1979, from floodmark (backwater from ice); minimum discharge, 30 ft³/s, Sep. 14-15, 2002, gage height, 2.27 ft.
PERIOD OF RECORD - CHEMICAL ANALYSES: Water year 1954.