USGS Water-Year Summary 2023

365644094001301 Pierce City

Ozark Plateaus aquifer system
Canadian Series

LOCATION - Lat 36°56'43.9", long 94°00'12.7" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SW 1/4 sec.21, T.26 N., R.28 W., Lawrence County, MO, Hydrologic Unit 11070207,

REVISIONS HISTORY - Revisions: Land-surface datum was updated to 1,206.28 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 1,205 ft NAVD88 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 1,206.28 ft above North American Vertical Datum of 1988. Measuring point: unknown, 1.3 ft above land-surface datum, May. 1, 1952 to present.  

PERIOD OF RECORD - January 10, 2007 to present.

GAGE - January 10, 2007 to present; DCP with telemetry capability, and float and encoder installed as the water level recording and measuring devices.

COOPERATION - Data from January 10, 2007 to present furnished by Missouri Department of Natural Resources (MDNR). Data processed by USGS and MDNR.

REMARKS -

Data from 01/10/2007 to 04/07/2010 has been processed by the USGS with limited field water level measurements (7 measurement) during the period to verify the recorded water levels. The record from 01/10/2007 to 01/23/2008 is fair; record from 01/23/2008 to 02/26/2008 is poor; record from 02/26/2008 to 04/07/2010 is fair. The fair record is accurate to +/- 0.2 ft and the poor record is accurate to +/- 3.0 ft. The record from 04/07/2010 to 08/12/2010 is good based on 3 water level measurements made during the period verify the recorded data and is accurate to +/- 0.05 ft. The record from 08/12/2010 to 10/12/2011 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Even though the gage was reset 0.14 ft on 04/14/2011, the discrepancy between the gage reading and water level measurements is probably caused by using different uncalibrated electric tapes during consecutive site visits. The record from 10/12/2011 to 07/25/2012 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 07/26/2012 to 11/17/2013 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 11/18/2013 to 12/09/2014 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 12/10/2014 to 0/24/2016 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 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 +/- 0.05 ft. The record from 10/06/2016 to 04/11/2017 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 04/12/2017 to 12/13/2017 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 12/14/2017 to 05/14/2018 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 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 06/25/2019 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 06/26/2019 to 12/09/2019 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft.

All further remarks can be found in RMS as of 12/10/2019.