USGS Water-Year Summary 2023
364453093543602 Butterfield Ozark Aquifer
Ozark Plateaus aquifer system
Canadian Series
LOCATION - Lat 36°44'53.1", long 93°54'36.4" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 sec.36, T.24 N., R.28 W., Barry County, MO, Hydrologic Unit 11070207,
REVISIONS HISTORY - Revisions: Land-surface datum was updated to 1,505.83 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 1,505 ft NGVD29 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 1,505.83 ft above North American Vertical Datum of 1988. Measuring point: DNR DCP platform, 2.1 ft above land-surface datum, May. 1, 2007 to present.
PERIOD OF RECORD - June 18, 2007 to present.
GAGE - From 06/18/2007 to present, water level measuring device is a float and encoder setting in metal box on top of casing. Water level recording device is a DCP with telemetry capability.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR). Record processed by the USGS and MDNR.