USGS Water-Year Summary 2023

373906092385201 Lebanon

Ozark Plateaus aquifer system
Gasconade Dolomite

LOCATION - Lat 37°38'53.1", long 92°38'51.6" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NW 1/4 sec.24, T.34 N., R.16 W., Laclede County, MO, Hydrologic Unit 10290109,

REVISIONS HISTORY - Revisions: Land-surface datum was revised to 1,306.27 ft NAVD88 on Oct. 4, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published in error as 1,312 ft NAVD88 from topographic map. Discrete water-level measurements referenced to NGVD29 and NAVD88 were revised, based on changes to the land-surface datum.

GROUNDWATER RECORDS

DATUM - Land-surface datum is 1,306.27 ft above North American Vertical Datum of 1988. Measuring point: unknown, 1.2 ft above land-surface datum, Aug. 1, 2001 to present.  

PERIOD OF RECORD - August 31, 2000 to present.

GAGE - From August 31, 2000 to 09/25/2001, the water level recorder was an analog digital recorder. From 08/31/2000 to 07/31/2007, water level measuring device was float and encoder setting in metal box on top of casing. From 09/25/2001 to present, the recorder has telemetry capabilities setting in metal box on top of casing. From 07/31/2007 to present, water level measuring device is a vented, submersible pressure transducer setting in metal box on top of casing.

COOPERATION - August 31, 2000 to present, data furnished by Missouri Department of Natural Resources (MDNR). Record processed by USGS and MDNR.

REMARKS - Data from 08/31/2000 to 12/07/2009 has been processed by the USGS with 34 field water level measurements used to verify the record. This record is considered good. The record from 12/08/2009 to 10/07/2010 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The period from 10/07/2010 to 08/31/2011 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 08/31/2011 to 09/11/2012 is good based on 6 water level measurements made during the period to verify the recorded data. The accuracy is +/- 0.2 ft which is a result of the precision of the transducer. The period from 09/12/2012 to 09/18/2013 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The instrument appeared to drift within +/- 0.12 ft of the actual water level which may be a result of the precision of the transducer. The record from 09/19/2013 to 11/12/2014 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 11/13/2014 to 03/20/2016 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.15 ft. The record from 03/21/2016 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 +/- 0.10 ft. The record from 09/21/2016 to 03/21/2017 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 03/22/2017 to 10/11/2017 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 10/12/2017 to 04/30/2018 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 05/01/2018 to 08/08/2018 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 08/09/2018 to 12/18/2018 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 12/19/2018 to 04/22/2019 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 04/23/2019 to 06/04/2019 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 06/05/2019 to 11/13/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. 

All later remarks can be found in RMS as of 11/14/2019.