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USGS Water-Year Summary 2024
443647070552303 ME-OW 400B Middle Dam, Maine
Other aquifers
Till
Till
LOCATION - Lat 44°46'43.66", long 70°55'16.39" referenced to North American Datum of 1983, Oxford County, ME, Hydrologic Unit 01040001, at Middle Dam, Lower Richardson Lake. Owner: U.S. Geological Survey.
REVISIONS HISTORY - Latitude revised on Dec. 8, 2017. Previously reported as Lat 44°36'47".
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 29 ft. Upper casing diameter 2 in; top of first opening 18.6 ft, bottom of last opening 28.6 ft.
DATUM - Land-surface datum is 1,466.21 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing between file marks, 1.94 ft above land-surface datum, Aug. 26, 2013 to present. Land-surface datum is at the general land surface.
PERIOD OF RECORD - October 2013 to current year.
GAGE - Electronic water-level recorder.
REMARKS - Gaps in record indicate missing data. Well was installed in 2013 as a replacement for ME-OW 400A (443647070552302) 32 ft east of the old well, and is screened in the same sandy till horizon. Water levels are considered equivalent to ME-OW 400A. Aquifer: Glacial till of Pleistocene age.
EXTREMES FOR PERIOD OF RECORD - Highest daily water level, 1.15 ft below land-surface datum, Apr. 15, 2019; lowest daily water level, 13.95 ft below land-surface datum, Oct. 24, 2016.
