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Water-Year Summary for Site 01064118

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2023: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 43°41'13", long 70°20'50" referenced to North American Datum of 1983, Cumberland County, ME, Hydrologic Unit 01060001, on right bank, 0.4 miles downstream from Cumberland Street Bridge in Westbrook, and at Sappi Westbrook Mill bridge.
DRAINAGE AREA - 577 mi².
PERIOD OF RECORD - DISCHARGE: October 1975 to September 1995. October 2016 to September 2020. GAGE HEIGHT: November 1998 to September 2016. October 2020 to current year. Prior to October 1984, published as "near West Falmouth" (station 01064140).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage 13.42 ft above National Geodetic Vertical Datum of 1929. Prior to Dec. 13, 1984, at site 4.1 mi downstream at datum 2.27 ft lower.
REMARKS - Flow regulated by Sebago Lake and many small power plants upstream.
  • Water Year 2019: Records good, except for estimated daily discharges, which are fair.
  • Water Year 2018: No estimated daily discharges. Records good.
  • Water Year 2017: No estimated daily discharges. Records good.
  • EXTREMES OUTSIDE PERIOD OF RECORD - The flood of Oct. 22, 1996 reached a discharge of 23,300 ft³/s (estimated), gage height, 34.10 ft, from flood marks (present site and datum), on basis of contracted-opening measurement of peak flow.
    EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 13,900 ft³/s (estimated), Aug. 20, 1991; maximum gage height, 25.48 ft, Aug. 20, 1991, from flood marks (present site and datum); minimum daily discharge, 39 ft³/s, July 9, 1976, former site and datum.