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Water-Year Summary for Site 400458093582001

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Available Parameters
72019 Water level, depth LSD(Mean)  

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

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USGS Water-Year Summary 2023
400458093582001 Coffey
Sand and gravel aquifers (glaciated regions)
Drift
LOCATION - Lat 40°04'58.7", long 93°58'20.9" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 SE 1/4 sec.18, T.61 N., R.27 W., Daviess County, MO, Hydrologic Unit 10280101,
REVISIONS HISTORY -
Revisions: Land-surface datum was updated to 909.77 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 906 ft NAVD88 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

The data from 09/28/2000 to 09/02/2009 was modified after it was previously set to 'Approved'. It was discovered that a measuring point height correction of 2.5 ft was needed for the period but was not previously applied. The data from 09/28/2000 to 09/02/2009 was modified after it was previously set to 'Approved'. It was discovered that a measuring point height correction of 2.5 ft was needed for the period but was not previously applied.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 909.77 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.5 ft above land-surface datum, Dec. 19, 2001 to present.  
PERIOD OF RECORD - September 28, 2000 to present.
GAGE - Water level measuring device is a float and encoder 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 from September 29, 2000 to present furnished by MDNR and USGS.
REMARKS -

Data from 09/28/2000 to 09/30/2008 has been processed by the USGS with limited field water level measurements (9 measurements) during the period to verify the recorded water levels. This record is considered fair. Data from 10/01/2008 to 09/02/2009 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 09/02/2009 to 09/01/2010 is good based on 5 water level measurements made during the period to verify the record and is accurate to +/- 0.05 ft. Data from 09/01/2010 to 06/08/2011 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 06/08/2010 to 08/14/2012 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 08/14/2012 to 11/19/2013 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 11/20/2013 to 12/16/2014 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 12/17/2014 to 06/28/2016 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 06/29/2016 to 03/15/2017 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 03/16/2017 to 04/16/2018 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 04/17/2018 to 10/23/2018 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 10/24/2018 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 +/- 0.05 ft. The record from 04/16/2019 to 11/18/2019 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 later correction notes and remarks can be found in RMS as of 11/19/2019.