USGS Water-Year Summary 2023

383302090420201 Wildwood

Ozark Plateaus aquifer system
Champlainian Series

LOCATION - Lat 38°33'01.8", long 90°42'02.0" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 sec.17, T.44 N., R.3 E., St. Louis County, MO, Hydrologic Unit 07140102,

REVISIONS HISTORY - Revisions: Land-surface datum was updated to 675.61 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 680 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 675.61 ft above North American Vertical Datum of 1988. Measuring point: unknown, 1.7 ft above land-surface datum, Jun. 17, 2008 to present.  

PERIOD OF RECORD - June 17, 2008 to present.

GAGE - June 17, 2008 to present; DCP with float, encoder, and telemetry capability were installed as the water level recording and measuring devices.

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

REMARKS - Data from June 17, 2008 to August 26, 2009 is good based on 10 water level measurements made during this period to verify recorded water levels. Data from August 26, 2009 to August 18, 2010 is rated good based on 5 water level measurements taken during the period to verify the water level record. Because of the numerous resets which appeared to negate each other, the data are accurate to +/- 0.1 ft. Data from 08/19/2010 to 08/17/2011 is rated good based on 6 water level measurements taken during the period to verify the water level record. Other than the gage reset on 02/22/2011 (+0.18 ft) which was negated by a gage reset on 04/18/2011 (-0.15 ft), the record is accurate to +/- 0.05 ft. Data from 08/17/2011 to 07/18/2012 is good based on 5 water level measurements taken during the period to verify the data is accurate to +/- 0.1 ft. The float during this period and previously would tend to stick and cause the live data on the graph to flat line. The record from 07/19/2012 to 07/15/2013 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 07/16/2013 to 01/02/2015 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 01/03/2015 to 07/11/2016 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 record from 07/12/2016 to 02/01/2017 is fair 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 02/02/2017 to 01/22/2018 is good based on 3 water level measurements made during the period for verify the recorded data is accurate to +/- 0.10 ft. The record from 01/23/2018 to 08/20/2018  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 08/21/2018 to 04/01/2019 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 04/02/2019 to 10/01/2019 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 correction notes and remarks can be found in RMS as of 10/02/2019.