USGS Water-Year Summary for Site 365451093555501

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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

365451093555501 Monett 10

Ozark Plateaus aquifer system
Cambrian, Upper

LOCATION - Lat 36°54'50.7", long 93°55'55.1" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NW 1/4 sec.06, T.25 N., R.27 W., Barry County, MO, Hydrologic Unit 11070207,

REVISIONS HISTORY -
Revisions: Land-surface datum was updated to 1,283.73 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 1,287 ft NAVD88 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

The record from 05/01/2006 to 12/07/2009 was modified after it was previously set to 'Approved' status. An incorrect measuring point height correction of -2.1 ft was applied to this period, when the correction should have been -3.3 ft. The new correction was applied and the water levels for this entire period changed -1.2 ft.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 1,283.73 ft above North American Vertical Datum of 1988. Measuring point: DNR DCP platform, 2.1 ft above land-surface datum, Jan. 1, 1965 to Oct. 6, 2020; DNR DCP platform, 3.3 ft above land-surface datum, Oct. 6, 2020 to present.

PERIOD OF RECORD - May 17, 2006 to present.

GAGE - Water level measuring device is a vented, submersible pressure transducer setting in metal box on top of casing installed 05/17/2006. Water level recorder is a DCP with telemtry capability.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR).

REMARKS -

Data from May 17, 2006 to September 30, 2008 good based on 9 water level measurements were made during this period to verify recorded water levels were typically +/- 0.20 ft different from water level measurement. Data from 10/01/2008 to 12/07/2009 has been processed by the USGS using 4 water level measurements to verify the recorded data. The record is good and accuracy estimated at +/- 0.2 ft. The record from 12/07/2009 to 07/20/2010 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The record from 07/20/2010 to 10/19/2010 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/-0.1 ft. the record from 10/19/2010 to 10/12/2011 is fair based on 4 water level measurements made during the period. Because one Sutron reading and perhaps the corresponding water level measurement were recorded incorrectly on the field sheet, it makes it difficult to define the accuracy during this period when the transducer experienced considerable instrument drift. The record from 10/19/2010 to 10/12/2011, at worse, is accurate to +/- 0.5 ft. The record from 10/12/2011 to 08/07/2012 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The measurements of the pressure transducer tends to drift often but the drifting was easily corrected by regular site visits. The record from 08/08/2012 to 10/08/2013 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The measurements of the pressure transducer tends to drift often but the drifting was easily corrected by regular site visits. The record from 10/09/2013 to 02/03/2015 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The measurements of the pressure transducer tends to drift often but the drifting was easily corrected by regular site visits. The record from 02/04/2015 to 04/24/2016 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 04/25/2016 to 10/05/2016 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The measurements of the pressure transducer tends to drift often but the drifting was easily corrected by regular site visits. The record from 10/06/2016 to 04/11/2017 is good based on 2 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 04/11/2017 to 08/08/2017 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 08/09/2017 to 05/14/2018 is good based on 2 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 05/15/2018 to 01/07/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 01/08/2019 to 06/05/2019 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 06/06/2019 to 10/22/2019 is fair based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The fair rating is due to the large amount of missing data during the period.

All further remarks can be found in RMS as of 10/23/2019.