USGS Water-Year Summary 2023
383659086545901 Martin 5 - MT 5.
Pennsylvanian aquifers
Pennsylvanian System
LOCATION - Lat 38°36'59", long 86°54'59" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 SW 1/4 sec.12, T.2 N., R.5 W., Martin County, IN, Hydrologic Unit 05120208, on private property 0.25 mi southwest of Whitfield.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 143 ft. Upper casing diameter 6 in; top of first opening 53 ft, bottom of last opening 143 ft.
DATUM - Land-surface datum is 565 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF CASING, 2.80 ft above land-surface datum, May 1958 to present. Land-surface datum is from topographic map.
PERIOD OF RECORD - May 1958 to current year.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 22.13 ft below land-surface datum, May 1-2, 2002; lowest, 34.10 ft below land-surface datum, Jan. 1, 5, 22, 23, 1960, and Dec. 18, 19, 1964.