USGS Water-Year Summary 2023

372958094161001 Lamar

Ozark Plateaus aquifer system
Gasconade Dolomite

LOCATION - Lat 37°29'59.4", long 94°16'10.0" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NE 1/4 sec.30, T.32 N., R.30 W., Barton County, MO, Hydrologic Unit 11070207,

REVISIONS HISTORY -
The record from 06/03/2009 to 08/17/2009 has been modified by -0.08 ft after it was previously approved.

Revisions: Land-surface datum was updated to 975.92 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 975 ft NGVD29 from a topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 975.92 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.3 ft above land-surface datum, Apr. 1, 1954 to present.  

PERIOD OF RECORD - June 18, 1968 to present

GAGE - From June 18, 1968 to September 30, 1997, the water level recording device was an A-35 strip chart. April 13, 2001 to present; the water level recording device is a DCP with telemetry capability. The water level measuring device is a float and encoder.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from June 18, 1968 to April 13, 2001 furnished from MDNR. Record from April 13, 2001 to present processed by USGS and MDNR.

REMARKS - Historic record from June 18, 1968 to Sept. 30, 1997 is considered fair because there is no field data to verify the data. Data from April 13, 2001 to September 30, 2008 has been processed by the USGS with limited water level measurements (8 measurements) during the period. This record is considered good and accurate to +/- 0.25 ft. Data from October 1, 2008 to September 30, 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 09/30/2009 to 08/08/2010 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. Data from 07/05/2011 to 06/05/2012 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 06/06/2012 to 10/08/2013 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 10/09/2013 to 10/14/2014 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 10/15/2014 to 11/09/2015 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 11/10/2015 to 10/11/2016 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 10/12/2016 to 05/08/2017 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 05/08/2017 to 12/12/2017 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 12/13/2017 to 03/27/2018 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 03/28/2018 to 09/17/2018 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 09/18/2018 to 01/08/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.25 ft. The record from 01/09/2019 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 01/14/2020 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 further remarks can be found in RMS as of 01/15/2020.