USGS Water-Year Summary for Site 391236094170201

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	Available Parameters
	72019 Water level, depth LSD(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

391236094170201 Atherton

Alluvial aquifers
Holocene Alluvium

LOCATION - Lat 39°12'36", long 94°17'02.8" referenced to North American Datum of 1983, in sec.25, T.51 N., R.31 W., Jackson County, MO, Hydrologic Unit 10300101,

REVISIONS HISTORY - Revisions: Land-surface datum was updated to 716.34 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 716.14 ft NAVD88 from levels (furnished). Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

GROUNDWATER RECORDS

WELL CHARACTERISTICS - Depth 35.6 ft. Upper casing diameter undefined; top of first opening undefined, bottom of last opening undefined. Unknown.

DATUM - Land-surface datum is 716.34 ft above North American Vertical Datum of 1988. Measuring point: unknown, 3.5 ft above land-surface datum, Dec. 4, 1996 to present.

GAGE - Water level measuring device is a vented, submersible pressure transducer setting in metal box on top of casing. The 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.

REMARKS - The record from 03/18/2008 to 09/27/2011 is good based on 20 water level measurements made during the period to verify the record and is accurate to +/- 0.1 ft. The pressure transducer was occaisionally subject to instrument drift. The record from 09/27/2011 to 08/15/2012 is good based on 2 water level measurements made during the period to verift the recorded data and is accurate to +/- 0.05 ft. The record from 08/16/2012 to 08/13/2013 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 08/14/2013 to 12/16/2014 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 12/17/2014 to 06/21/2016 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 06/22/2016 to 03/13/2017 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 03/14/2017 to 04/15/2018 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 04/16/2018 to 10/16/2018 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 10/17/2019 to 04/15/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 04/16/2019 to 11/19/2019 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.30 ft.

All further remarks can be found in RMS as of 11/20/2019.