USGS Water-Year Summary 2023
410809087580801 JASPER 7 (JP 7)
Silurian-Devonian aquifers
Devonian System
LOCATION - Lat 41°08'10", long 86°58'08" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 NE 1/4 sec.15, T.31 N., R.5 W., Jasper County, IN, Hydrologic Unit 07120002,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 130 ft. Upper casing diameter 6 in; top of first opening 94 ft, bottom of last opening 130 ft.
DATUM - Land-surface datum is 699.38 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF FLOOR OF SHELTER, 2.75 ft above land-surface datum, 1967 to present.
PERIOD OF RECORD - May 1967 to August 1971. September 1971 to May 1978 (semi-annual tape-down readings only). June 1978 to October 2003. March 2016 to current.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 6.04 ft below land-surface datum, Apr. 5, 1985; lowest, 18.15 ft below land-surface datum, Aug. 30, 1988.