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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
453629068531801 ME-PEW594 Millinocket, Maine
Sand and gravel aquifers (glaciated regions)
Ice-Contact Deposits, Including Eskers and Kames
Ice-Contact Deposits, Including Eskers and Kames
LOCATION - Lat 45°36'29", long 68°53'18" referenced to North American Datum of 1927, Penobscot County, ME, Hydrologic Unit 01020001, on abandoned dirt road, about 8.0 miles southwest of Millinocket, about 0.4 miles south of South Twin Lake and east of Sandy Brook, T4 Indian Purchase. Owner: U.S. Geological Survey.
REVISIONS HISTORY - Revisions: Groundwater levels for the period Apr. 20, 2008 to Nov. 1, 2017 were revised on Sept. 20, 2018 to account for movement of the measuring point (MP), based on annual surveying. Revised daily values are computed for a standard time day period instead of a daylight savings time day period due to changes in processing systems.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 30.5 ft. Upper casing diameter 2 in; top of first opening 10.5 ft, bottom of last opening 30.5 ft. Screen slot size 0.008 in. Wash-bored unconfined observation well.
DATUM - Land-surface datum is 509.61 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing at highest point, 1.0 ft above land-surface datum, Sep. 17, 2003 to Oct. 31, 2018; Top of PVC casing at highest point, 1.11 ft above land-surface datum, Oct. 31, 2018 to present. Land-surface datum is at the general land surface.
PERIOD OF RECORD - August 1994 to current year.
GAGE - Electronic water-level recorder.
REMARKS - Gaps in record indicate missing data. Aquifer: Glacial sand and gravel (ice-contact deposits) of Pleistocene age.
EXTREMES FOR PERIOD OF RECORD - Highest daily water level, 3.30 ft below land-surface datum, May 26, 1997; lowest daily water level, 11.87 ft below land-surface datum, Nov. 15, 2016.
