USGS Water-Year Summary for Site 373701093151601

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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

373701093151601 Halfway

Ozark Plateaus aquifer system
Cotter-Jefferson City Dolomite

LOCATION - Lat 37°36'57.4", long 93°15'15.4" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 NE 1/4 sec.05, T.33 N., R.21 W., Polk County, MO, Hydrologic Unit 10290107,

REVISIONS HISTORY -

Data from 05/15/2019 at 08:30 am through 05/16/2019 at 12:00 pm was deleted due to a pump test. The pump test was performed on the well on 05/15/2019 as part of a well integrity test.

Revisions: Land-surface datum was updated to 1,114.45 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 1,114 ft NGVD29 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 1,114.45 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.2 ft above land-surface datum, Mar. 5, 1956 to present.

PERIOD OF RECORD - March 5, 1956 to present.

GAGE - Stevens model A-35 chart recorder installed March 5, 1956 and used through September 30, 1997. July 28, 2000 to present; DCP with telemetry capability and float and encoder were installed as the water level recording and measuring devices.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from March 5, 1956 to July 28, 2000 furnished from MDNR.

REMARKS -

Furnished record rated fair (March 5, 1956 to September 30, 1997)because no water level measurements are available to verify daily values. These data have been archived by Missouri Department of Natural Resources (MDNR) and are not available for verification. Record from July 28, 2000 to September 30, 2008 are fair based on 19 water level measurements made during this period to verify recorded water levels. Data from 10/01/2008 to 12/08/2009 is good based on the 4 water level measurements made during the period to verify the record. This record is accurate to +/- 0.05 ft. The record from 12/08/2009 to 10/06/2010 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 10/06/2010 to 08/09/2011 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 08/10/2011 to 07/22/2012 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 07/23/2012 to 10/29/2013 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 10/30/2013 to 08/29/2014 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 08/30/2015 to 07/05/2016 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 07/06/2016 to 11/08/2016 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 11/09/2016 to 05/09/2017 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 05/10/2017 to 01/31/2018 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 02/01/2018 to 08/01/2018 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 08/02/2018 to 03/06/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.15 ft. The record from 03/07/2019 to 06/11/2019 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.15 ft. The record from 06/12/2019 to 09/03/2019 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 09/04/2019.