USGS Water-Year Summary for Site 372153091322301

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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

372153091322301 Akers

Ozark Plateaus aquifer system
Potosi Dolomite

LOCATION - Lat 37°21'52.6", long 91°32'24.3" referenced to North American Datum of 1983, in sec.24, T.31 N., R.6 W., Shannon County, MO, Hydrologic Unit 11010008,

REVISIONS HISTORY - Revisions: Land-surface datum was revised to 839.39 ft NAVD88 on Aug. 9, 2023, as determined by a GNSS Level II survey. Land-surface datum was previously published in error as 825 ft NGVD29 from topographic map. Discrete water-level measurements referenced to NGVD29 and NAVD88 were revised, based on changes to the land-surface datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 839.39 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.0 ft above land-surface datum, Aug. 1, 2001 to present.

PERIOD OF RECORD - November 15, 1971 to present.

GAGE - Stevens model A-35 chart recorder installed November 15, 1971. December 19, 1999 to present; DCP with telemetry capability and float and encoder installed as the water level recording and measuring devices.

ECOLOGICAL RECORDS

REMARKS - Furnished record rated fair (November 15, 1971 to December 19, 1999)because no water level measurements are available to verify daily values. This data has been archived by Missouri Department of Natural Resources (MDNR) and is not available for verification. Data from 12/20/1999 to 09/30/2008 has been processed by the USGS with limited field water level measurements (11 measurements) during the period to verify the recorded water levels. This record is considered fair. Data from 10/01/2008 to 06/03/2009 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from June 03, 2009 to April 21, 2010 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 04/21/2010 to 05/18/2011 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 05/18/2011 to 07/18/2012 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 02/28/2012 to 09/17/2013 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 09/18/2013 to 12/18/2014 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 12/19/2014 to 03/14/2016 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 03/15/2016 to 09/14/2016 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 09/15/2016 to 03/13/2017 is good based on 1 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 03/14/2017 to 11/14/2017 is good based on 1 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 11/15/2017 to 05/02/2018 is good based on 1 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 05/03/2018 to 12/25/2018 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 12/26/2018 to 06/04/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 06/05/2019 to 01/07/2020 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft.

All further remarks can be found in RMS as of 01/08/2020.

WATER-QUALITY RECORDS

DATUM - Land-surface datum is 839.39 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.0 ft above land-surface datum, Aug. 1, 2001 to present.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from November 15, 1971 to December 19, 1999 furnished from MDNR.