USGS Water-Year Summary 2024
413559087270301 Lake 13 - LK 13
Sand and gravel aquifers (glaciated regions)
Pleistocene Series
LOCATION - Lat 41°35'59", long 87°27'03" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 SW 1/4 sec.03, T.36 N., R.9 W., Lake County, IN, Hydrologic Unit 04040001, at the Gibson Woods Nature Preserve on the north side of Hammond.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 23 ft. Upper casing diameter 6 in; top of first opening 18 ft, bottom of last opening 23 ft.
DATUM - Land-surface datum is 591.64 ft above North American Vertical Datum of 1988. Measuring point: TOP OF CASING, 3.33 ft above land-surface datum, Jul. 18, 1986 to present.
From Jul. 18, 1986 to Feb. 28, 2017: Land-surface datum is 591.91 ft above National Geodetic Vertical Datum of 1929.
PERIOD OF RECORD - July 1986 to current year.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD - Highest water level, -0.56 ft above land-surface datum, April 6, 2017; lowest, 5.23 ft below land-surface datum, Sept. 26, 27, 1999.