USGS Water-Year Summary 2023

370354093325901 Billings

Ozark Plateaus aquifer system
Roubidoux Formation

LOCATION - Lat 37°03'53.4", long 93°32'59.3" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 NW 1/4 sec.10, T.27 N., R.24 W., Christian County, MO, Hydrologic Unit 11010002,

REVISIONS HISTORY -
Revisions: Land-surface datum was revised to 1,360.87 ft NAVD88 on Oct. 4, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 1,364 ft NAVD88 from GPS. Discrete water-level measurements referenced to NGVD29 and NAVD88 were revised, based on changes to the land-surface datum.

On August 23, 2010 the record from September 26, 2007 to October 05, 2009 was set back from 'Approved' to 'In Review' by M Kleeschulte and a -2.2 ft measuring point height correction was applied to the entire period of record. This was done to reference the water levels to land surface instead of the measuring point which is the reference in the field.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 1,360.87 ft above North American Vertical Datum of 1988. Measuring point: DNR DCP platform shelf, 2.2 ft above land-surface datum, Jan. 1, 1942 to present.  

PERIOD OF RECORD - September 27, 2007 to present. Gage was installed on September 26, 2007.

GAGE - September 26, 2007 to present; DCP with float, encoder, and telemetry capability was installed as the water level recording device. Unit Values begin on September 27, 2007.

COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR).

REMARKS - Data from September 26, 2007 to October 06, 2009 good based on 6 water level measurements made during this period to verify recorded water levels. Unit values begin on September 27, 2007. The data from 10/06/2009 to 09/29/2010 is good based on 5 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.1 ft. The data from 09/26/2010 to 08/15/2011 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 data from 08/15/2011 to 05/30/2011 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 data from 05/31/2012 to 10/02/2013 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 10/03/2013 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 data from 12/10/2014 to 04/24/2016 is good based on 3 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The data 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 data from 10/06/2016 to 03/28/2017 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 data from 03/29/2017 to 11/28/2017 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 data from 11/29/2017 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 data from 05/15/2018 to 10/02/2018 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 data from 10/03/2018 to 01/14/2019 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 data from 06/26/2019 to 01/13/2020 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 01/14/2020.