USGS Water-Year Summary 2023
441743091153101 TR-21/07W/17-0071
Cambrian-Ordovician aquifer system
Cambrian System
LOCATION - Lat 44°17'43.66", long 91°15'31.18" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 SW 1/4 sec.17, T.21 N., R.7 W., Trempealeau County, WI, Hydrologic Unit 07040003, about 1 mile west of the city of Blair.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 885.7 ft above North American Vertical Datum of 1988. Measuring point: 0.25" in pump base, 1.77 ft above land-surface datum, Apr. 2, 2014 to Jun. 20, 2019; top of casing, 1.65 ft above land-surface datum, Jun. 20, 2019 to present.
PERIOD OF RECORD - November 1979 to current year.