USGS Water-Year Summary 2023

370600094223501 Atlas Powder

Ozark Plateaus aquifer system
Cambrian System

LOCATION - Lat 37°06'00.3", long 94°22'34.8" referenced to North American Datum of 1983, in NW 1/4 SW 1/4 SE 1/4 sec.36, T.28 N., R.32 W., Jasper County, MO, Hydrologic Unit 11070207,

REVISIONS HISTORY - Revisions: Land-surface datum was updated to 969.92 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 970 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 969.92 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.3 ft above land-surface datum, Jan. 25, 1941 to present.  

PERIOD OF RECORD - Febrauary 6, 1956 to present.

GAGE - Stevens model A-35 strip chart recorder was installed for the period from February 6, 1956 to June 6, 2001. June 7, 2001 to present; DCP with telemetry capability was installed as the water level recording device. Float and encoder are the water level measuring devices.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from February 6, 1956 to June 7, 2001 furnished from MDNR. Record from June 07, 2001 to present processed by USGS and MDNR.

REMARKS - Furnished record rated good (February 6, 1956 to June 7, 2001) and 123 water level measurements are available to verify daily values. Data from June 7, 2001 to September 30, 2008 is good with 14 water level measurements available during this period to verify recorded water levels. Data from October 1, 2008 to October 7, 2009 is good based on 3 water level measurements made during the period and is accurate to +/- 0.05 ft. Data from October 07, 2009 to October 4, 2010 is good based on 4 water level measurements made during the period and is accurate to +/- 0.05 ft. Data from 10/05/2010 to 04/14/2011 is good based on 2 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 04/14/2012 to 07/24/2012 is good based on 5 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 07/25/2012 to 08/12/2013 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 08/13/2013 to 12/08/2014 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 12/09/2014 to 03/13/2016 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 03/14/2016 to 09/20/2016 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 09/21/2016 to 04/12/2017 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 04/13/2017 to 12/13/2017 is good based on 1 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 12/14/2017 to 07/17/2018 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. Data from 07/18/2018 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 +/- 0.10 ft. Data from 01/09/2019 to 06/26/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Data from 06/27/2019 to 01/14/2020 is fair based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.50 ft. The fair rating is based on several days of missing data and drift of the instrument. 

All further remarks can be found in RMS as of 01/15/2020.