USGS Water-Year Summary 2023
425535088131701 WK-05/19E/02-0031
Silurian-Devonian aquifers
Niagaran Series
LOCATION - Lat 42°55'35.76", long 88°13'18.33" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NW 1/4 sec.2, T.5 N., R.19 E., Waukesha County, WI, Hydrologic Unit 07120006, about 5 miles south of the city of Waukesha.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 975.3 ft above North American Vertical Datum of 1988. Measuring point: top of casing, 1.03 ft above land-surface datum, May 21, 2015 to present.
PERIOD OF RECORD - May 1947 to current year.