USGS Water-Year Summary 2023

381045091564801 Vienna

Ozark Plateaus aquifer system
Eminence-Potosi Dolomites

LOCATION - Lat 38°10'45", long 91°56'48" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 NE 1/4 sec.29, T.40 N., R.9 W., Maries County, MO, Hydrologic Unit 10290203,

REVISIONS HISTORY -
Revisions: Land-surface datum was updated to 935.43 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 940 ft NAVD88 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.

On August 23, 2010 the record from January 15, 2008 to November 01, 2009 was set back from 'Approved' to 'In Review' by M Kleeschulte and a -2.7 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 935.43 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.7 ft above land-surface datum, Oct. 25, 2007 to present.  

PERIOD OF RECORD - January 15, 2008 to present. Gage was installed on October 25, 2007.

GAGE - October 25, 2007 to present; DCP with float, encoder, and telemetry capability was installed as the water level measuring and recording device.

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

REMARKS - Data from January 15, 2008 to November 02, 2009 good based on 9 water level measurements made during this period to verify recorded water levels. Data from 11/02/2009 to 08/04/2010 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 08/05/2010 to 06/28/2011 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 06/28/2011 to 08/26/2012 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 08/27/2012 to 09/16/2013 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 record from 09/17/2013 to 11/18 2014 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 11/19/2014 to 03/22/2016 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 03/23/2016 to 07/10/2016 is good based on 1 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 07/11/2016 to 03/06/2017 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 03/07/2017 to 10/23/2017 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 10/24/2017 to 04/25/2018 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 04/26/2018 to 09/05/2018 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 09/06/2018 to 02/25/2019 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 02/26/2019 to 01/01/2020 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 01/02/2020.