USGS Water-Year Summary 2023
373210090180601 Fredericktown
Ozark Plateaus aquifer system
Lamotte Sandstone
LOCATION - Lat 37°32'07.9", long 90°18'06.4" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 NW 1/4 sec.20, T.33 N., R.7 E., Madison County, MO, Hydrologic Unit 08020202,
REVISIONS HISTORY -
Record from 05/01/1985 to 07/01/1988 has been revised, but the period March 1985 through Dec 1986 was previously published in BERKAS AND OTHERS, 1989, MDNR Water Resources Report No. 37.
Revisions: Land-surface datum was updated to 856.11 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 857 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 856.11 ft above North American Vertical Datum of 1988. Measuring point: unknown, 1.8 ft above land-surface datum, Apr. 1, 1939 to present.
PERIOD OF RECORD - November 15, 1958 to present.
GAGE - Stevens model A-35 chart recorder installed November 15, 1958. Stevens model 7001 digital recorder installed September 29, 1988. May 26, 2000 to present; DCP with float, encoder, and telemetry capability installed as the water level measuring and recording devices.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from November 15, 1958 to May 26, 2000 furnished from MDNR.