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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
391222093185501 Marshall
Alluvial aquifers
Holocene Alluvium
Holocene Alluvium
LOCATION - Lat 39°12'21.6", long 93°18'55.0" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 SE 1/4 sec.16, T.51 N., R.22 W., Saline County, MO, Hydrologic Unit 10300101,
REVISIONS HISTORY - Revisions: Land-surface datum was updated to 694.91 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 697 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 694.91 ft above North American Vertical Datum of 1988. Measuring point: DNR DCP platform shelf, 1.9 ft above land-surface datum, Mar. 17, 2009 to present.
PERIOD OF RECORD - March 17, 2009 to present.
GAGE - DCP with telemetry capability, and float and encoder installed as the water level recording and measuring devices.
REMARKS - Data from 03/17/2009 to 01/10/2010 is good based on 6 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft.
The record from 01/11/2010 to 11/17/2010 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 record from 11/17/2010 to 09/26/2011 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 record from 09/27/2011 to 04/10/2012 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 04/11/2012 to 08/11/2013 is fair based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. Water levels on 05/13/2013 and 11/07/2013 could not be matched up to encoder readings in adaps on the day and time given. These water levels were not used to work the record.
The record from 08/12/2013 to 11/12/2014 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 11/13/2014 to 07/25/2016 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 07/26/2016 to 12/13/2016 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 record from 12/14/2016 to 12/18/2017 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 12/19/2017 to 07/10/2018 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 07/11/2018 to 02/04/2019 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 02/05/2019 to 10/07/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft.
All further remarks can be found in RMS as of 10/08/2019.
