USGS Water-Year Summary 2024

384713091474301 Reform

Cambrian-Ordovician aquifer system
Canadian Series

LOCATION - Lat 38°47'12.0", long 91°47'43.0" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 SW 1/4 sec.02, T.46 N., R.8 W., Callaway County, MO, Hydrologic Unit 10300102,

REVISIONS HISTORY - Revisions: Land-surface datum was updated to 804.77 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 795 ft NAVD88 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 804.77 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.5 ft above land-surface datum, May. 29, 2008 to present.  

PERIOD OF RECORD - May 29, 2008 to present.

GAGE - May 29, 2008 to present; DCP with telemetry capability. The water level recording device is a float and encoder.

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

REMARKS -

Data from May 29, 2008 to November 18, 2009 is good based on 7 water level measurements made during this period to verify recorded water levels.

Data from 11/19/2009 to 06/28/2010 is good except for the periods 07/18/2010 to 07/30/2010 and 08/23/2010 to 08/31/2010 which is fair (float was stuck preventing it from rising with the water levels). The good period is accurate to +/- 0.1 ft and the fair periods are accurate to +/- 0.2 ft based on 5 water level measurements made during the period. The record from 06/28/2010 to 08/23/2011 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 08/23/2011 to 07/26/2011 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 07/27/2012 to 08/08/2013 is good based on 4 water level measurements made during the period to verify the recorded data and are accurate to +/- 0.05 ft. The record from 08/09/2013 to 01/14/2015 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 01/15/2015 to 07/05/2016 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 07/06/2016 to 11/13/2016 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 11/14/2016 to 07/19/2017 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 07/20/2017 to 02/27/2018 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 02/28/2018 to 04/24/2018 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 04/25/2018 to 08/01/2018 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 08/02/2019 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 03/26/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 03/27/2019 to 09/24/2019 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.15 ft.

All later correction notes and remarks can be found in RMS as of 09/25/2019.