USGS Water-Year Summary 2023
423114090161101 LF-01/02E/33-0057
Cambrian-Ordovician aquifer system
Galena-Platteville Aquifer
LOCATION - Lat 42°31'14", long 90°16'11" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NW 1/4 sec.33, T.1 N., R.2 E., Lafayette County, WI, Hydrologic Unit 07060005, about 2 miles west of the city of Shullsburg.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 1,000 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF CASING, 3.00 ft above land-surface datum, Apr. 29, 1952 to present.
PERIOD OF RECORD - April 1952 to current year.