USGS Water-Year Summary for Site 392045093302401

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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

392045093302401 Carrollton

Alluvial aquifers
Holocene Alluvium

LOCATION - Lat 39°20'44.5", long 93°30'23.1" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 sec.05, T.52 N., R.23 W., Carroll County, MO, Hydrologic Unit 10300101,

REVISIONS HISTORY -
The data from 10/01/2006 to 09/08/2009 was modified after it was previously set to 'Approved'. It was discovered that the measuring point (MP) height correction of 5.0 ft was incorrect and that a MP height correction of 7.6 ft was needed for the period.

Revisions: Land-surface datum was updated to 665.41 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 665 ft NGVD29 from a topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 665.41 ft above North American Vertical Datum of 1988. Measuring point: unknown, 7.6 ft above land-surface datum, Nov. 7, 2006 to present.

PERIOD OF RECORD - November 7, 2006 to present.

GAGE - Water level measuring and recording devices are a float and encoder and a DCP with telemetry capability setting in metal box on top of casing.

REMARKS - Data from 11/07/2006 to 09/08/2009 has been processed by the USGS with limited field water level measurements (7 measurements) during the period to verify the recorded water levels. This record is considered good and accurate to +/- 0.05 ft. Data from 09/09/2009 to 11/17/2010 is good based on 4 water level measurements made during the period to verify the record and is accurate to +/- 0.05 ft. Data from 11/17/2010 to 05/23/2011 is good based on 2 water level measurements made during the period to verify the record and is accurate to +/- 0.05 ft. Data from 05/24/2011 to 09/12/2012 is good based on 4 water level measurements made during the period to verify the record and is accurate to +/- 0.05 ft. Data from 09/13/2012 to 11/06/2013 is good based on 4 water level measurements made during the period to verify the record and is accurate to +/- 0.05 ft. The record from 11/07/2013 to 11/12/2014 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 11/13/2014 to 05/16/2016 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 05/17/2016 to 12/14/2016 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 12/15/2016 to 12/18/2017 is good based on 1 water level measurement made during the period to verify the recorded data is accurate to +/- 0.05 ft. The record from 12/19/2017 to 07/10/2018 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 07/11/2018 to 02/04/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 02/05/2019 to 10/07/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft.

All further remarks can be found in RMS as of 10/08/2019.