USGS Water-Year Summary 2021
Ozark Plateaus aquifer system
LOCATION - Lat 38°13'26.5", long 90°23'47.1" referenced to North American Datum of 1983, in sec.06, T.40 N., R.6 E., Jefferson County, MO, Hydrologic Unit 07140101,
- The record from 11/25/2008 to 06/04/2009 was modified after it was previously set to 'Approved' status. A -0.02 ft correction was applied to the period to remove the affects of a gage reset on 11/25/2009.
DATUM - Land-surface datum is 450 ft above North American Vertical Datum of 1988. Measuring point: Undefined, 2.4 ft above land-surface datum, Aug. 23, 2001 to present.
PERIOD OF RECORD - November 21, 2001 to present.
GAGE - November 21, 2001 to present; DCP with float, encoder, and telemetry capability was installed as the water level recording and measuring devices.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR)and record processed by USGS and MDNR.