USGS Water-Year Summary 2021
Mississippi River Valley alluvial aquifer
LOCATION - Lat 36°35'54.5", long 90°15'37.4" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 NW 1/4 sec.36, T.23 N., R.7 E., Butler County, MO, Hydrologic Unit 08020302,
- The record from 09/21/2000 to 12/08/2009 was modified after it was previously set to 'Approved' status. A -1.9 ft measuring point height correction was applied to this period to reference the water level data to land surface instead of the measuring point which is referenced in the field.
DATUM - Land-surface datum is 315 ft above North American Vertical Datum of 1988. Measuring point: Top of DCP recorder shelf, 1.9 ft above land-surface datum, Sep. 21, 2000 to present.
PERIOD OF RECORD - September 21, 2000 to present.
GAGE - September 21, 2000 to present; DCP with float, encoder, and telemetry capability was installed as the water level recording device.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR).