USGS Water-Year Summary for Site 373620093470301

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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

373620093470301 North Hawker Point

Ozark Plateaus aquifer system
Cotter-Jefferson City Dolomite

LOCATION - Lat 37°36'20.7", long 93°47'02.7" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NE 1/4 sec.16, T.33 N., R.26 W., Cedar County, MO, Hydrologic Unit 10290106,

REVISIONS HISTORY -
Revisions: Land-surface datum was updated to 967.73 ft NAVD88 on May 22, 2023, as determined by a GNSS Level II Survey. Land-surface datum was previously published as 967 ft NAVD88 from topographic map (furnished). Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

The period from 12/08/2009 to 08/12/2010 was modified after it was previously set to 'APPROVED' status. A previous prorated correction from -0.03 to -0.06 ft from 12/08/2009 to 06/01/2010 was changed to -0.03 to -0.07 ft. This change was made after additional site visits were made giving more information indicating the previous correction were in error.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 967.73 ft above North American Vertical Datum of 1988. Measuring point: unknown, 1.5 ft above land-surface datum, May. 20, 2008 to present.

PERIOD OF RECORD - May 21, 2008 to present. Gage was installed on May 20, 2008.

GAGE - May 20, 2008 to present; DCP with telemetry capability. The water level recording device is a float and encoder. Unit values begin on May 21, 2008.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR). Records processed by the USGS and MDNR.

REMARKS -

Data from May 21, 2008 to December 08, 2009 is good based on 6 water level measurements made during this period to verify recorded water levels. The record from 12/08/2009 to 08/11/2010 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 08/12/2010 to 05/16/2011 is good based on 3 water level measurements made during the period; however one measurment was not used because it was deemed inaccurate and did not fit the hydrograph. The measurment verified the recorded data accurate to +/- 0.05 ft. The record from 05/16/2011 to 07/22/2012 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 07/23/2012 to 10/29/2013 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 10/30/2013 to 11/13/2014 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 11/14/2014 to 05/03/2016 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The float has a tendency to stick; however, it typically releases within a few hours and the data jumps are less than 0.1 ft. The periods where the float sticks for several hours have been deleted causing much of the missing data. The record from 05/04/2016 to 11/08/2016 is good based on 2 water level measurements during the period and is accurate to +/- 0.10 ft. The record from 11/09/2016 to 05/09/2017 is good based on 1 water level measurement during the period and is accurate to +/- 0.10 ft. The record from 05/10/2017 to 12/13/2017 is good based on 1 water level measurement during the period and is accurate to +/- 0.10 ft. The record from 12/14/2017 to 07/16/2018 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 07/17/2019 to 02/13/2019 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 02/14/2019 to 05/14/2019 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 05/15/2019 to 09/17/2019 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 09/18/2019.