USGS Water-Year Summary 2024
430427089284901 DN-07/09E/19-0064
Cambrian-Ordovician aquifer system
Sandstone Aquifer
LOCATION - Lat 43°04'27.42", long 89°28'48.62" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NW 1/4 sec.19, T.7 N., R.9 E., Dane County, WI, Hydrologic Unit 07090001, in the city of Madison.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 930.9 ft above North American Vertical Datum of 1988. Measuring point: top of platform, 2.85 ft above land-surface datum, Oct. 1, 2014 to present.
PERIOD OF RECORD - January 1938 to current year.