USGS Water-Year Summary for Site 381641093214601

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	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

381641093214601 Lost Valley Hatchery

Ozark Plateaus aquifer system
Roubidoux Formation

LOCATION - Lat 38°16'40.7", long 93°21'46.0" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 sec.04, T.40 N., R.22 W., Benton County, MO, Hydrologic Unit 10290109,

GROUNDWATER RECORDS

DATUM - Land-surface datum is 723 ft above National Geodetic Vertical Datum of 1929. Measuring point: DNR DCP platform, 2.4 ft above land-surface datum, Jul. 3, 2007 to present.

PERIOD OF RECORD - July 9, 2007 to present.

GAGE - From July 09, 2007 to August 12, 2009, water level measuring device is a vented, submersible pressure transducer setting in metal box on top of casing. From August 12, 2009 to present, the water level measuring device is a float driven encoder. Water level recording device from July 09, 2007 to present is a DCP with telemetry capability.

COOPERATION - Water level data from July 9, 2007 to present furnished by Missouri Department of Natural Resources (MDNR). Water level record from July 9, 2007 to present processed by USGS and MDNR.

REMARKS - Data from 07/09/2007 to 09/30/2008 has been processed by the USGS with limited field water level measurements (4 measurements) during the period to verify the recorded water levels. This record is fair and is accurate to +/- 0.2 ft. There typically appears to be instrument drift problems with the pressure transducer. Data from 10/01/2008 to 11/16/2010 is good and accurate to +/- 0.05 ft except for the period from 05/24/2009 to 08/12/2009 which is poor and accurate to +/- 0.5 ft. This is based on 11 water level measurements made during the period to verify the recorded data. During the period from 05/24/2009 to 08/12/2009, the pressure transducer was experiencing electronic problems and was replaced on 08/12/2009. Data from 11/16/2010 to 10/26/2011 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 10/27/2011 to 08/15/2012 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 08/16/2012 to 11/04/2013 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 11/05/2013 to 11/18/2014 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record period from 11/19/2014 to 05/02/2016 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 period from 05/03/2016 to 11/28/2016 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft.