USGS Water-Year Summary 2021
01069500 MOUSAM RIVER NEAR WEST KENNEBUNK, ME
LOCATION - Lat 43°25'06", long 70°39'30" referenced to North American Datum of 1983, York County, ME, Hydrologic Unit 01060003, on right bank 50 ft upstream from Whichers Mill Road bridge, 1.4 mi downstream from Middle Branch Mousam River, and 4.0 mi west of West Kennebunk.
DRAINAGE AREA - 99 mi².
- WDR ME-81-1: Drainage area.
PERIOD OF RECORD - DISCHARGE: October 1959 to September 1984, November 2008 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 165.75 ft above National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - The flood of April 15-18, 2007 reached a discharge of 9,230 ft³/s, from rating curve extended above 1,700 ft³/s; gage height unknown.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,640 ft³/s, Feb. 26, 2010, gage height, 6.31 ft; minimum daily discharge, 0.40 ft³/s, Nov. 10, 15-16, 1964.