USGS Water-Year Summary 2023

364059093520001 Cassville

Ozark Plateaus aquifer system
Gasconade Dolomite

LOCATION - Lat 36°40'46.4", long 93°52'09.6" referenced to North American Datum of 1983, in NE 1/4 sec.29, T.23 N., R.27 W., Barry County, MO, Hydrologic Unit 11010002,

REVISIONS HISTORY - Revisions: Land-surface datum was revised to 1,324.43 ft NAVD88 on Aug. 17, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published in error as 1,335 ft NGVD29 from topographic map. Discrete water-level measurements referenced to NGVD29 and NAVD88 were revised, based on changes to the land-surface datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 1,324.43 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.5 ft above land-surface datum, Aug. 1, 1931 to present.  

PERIOD OF RECORD - January 4, 2001 to present.

GAGE - From 01/04/2001 to present, the water level recording device is a DCP with telemetry capability. From 01/04/2001 to 12/14/2004, the water level measuring device was a float and encoder. From 12/14/2004 to present, the water level measuring device is a vented, submersible pressure transducer.

COOPERATION - The data from 01/05/2001 to present is furnished by the Missouri Department of Natural Resources (MDNR). The record for this period has been processed by USGS and MDNR.

REMARKS -

Data from 01/04/2001 to 05/14/2008 has been processed by the USGS with limited field water level measurements (10 measurements) during the period to verify the recorded water levels. This record is considered fair. Data from 05/15/2008 to 12/07/2009 is good based on 5 water level measurements made during the period and is accurate to +/- 0.25 ft. Data from 12/07/2009 to 08/09/2010 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.3 ft. Data from 12/07/2009 to 01/05/2011 is fair based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.4 ft. The pressure transducer was set too deep during this period causing the device to be outside its intended pressure range causing the recorded water levels to drift excessively. The transducer was raised on 01/05/2011 which corrected the problem. Data from 01/05/2011 to 06/15/2011 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The data from 06/15/2011 to 10/08/2013 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The data from 10/09/2013 to 10/13/2014 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 data from 10/14/2014 to 05/31/2016 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 data from 06/01/2016 to 03/08/2017 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The data from 03/09/2017 to 10/24/2017 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 data from 10/25/2017 to 05/15/2018 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 data from 05/16/2018 to 07/10/2018 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. Data is spotty from 05/25/2018 to 07/05/2018 due to missed transmissions. The data from 07/11/2018 to 12/12/2018 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.40 ft. Data is spotty from 12/04/2018 to 12/12/2018 due to missed transmissions. The data from 12/12/2018 to 04/02/2019 is fair based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. Data is spotty from 12/12/2018 to 01/08/2019 and missing from 03/09/2019 to 04/03/2019 due to missed transmissions. The data from 04/03/2019 to 09/16/2019 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. Data is spotty from 04/28/2019 to 05/05/2019 and missing from 08/25/2019 to 09/17/2019 due to missed transmissions.

All later correction notes and remarks can be found in RMS as of 09/17/2019.