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Aquifer plume delineation of mixed population nitrate data using ArcGIS (PDF)

  • Author(s): Tyagi, Avdhesh K.; Johnson, Nicholas M.
  • Publications: Journal - American Water Works Association
  • Issue Date: September 2013
  • Volume / Number: 105, Number 9
  • Page(s): E517-E523
  • DOI: http://dx.doi.org/10.5942/jawwa.2013.105.0111
  • Product Number: JAW_0078642
Full Text: pdf

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Abstract

The city of Enid collects most of its water for public distribution from groundwater. This groundwater is supplied from five wellfields - Enid, Drummond, Cleo Springs, Ringwood, and Ames - covering the Enid Terrace Aquifer, the Drummond Confined Aquifer, and the Cimarron Terrace Aquifer. This research explores nitrate distribution in the aquifer by analyzing trend graphs for the wells and estimating nitrate plumes for the wellfields. The US Environmental Protection Agency (USEPA) requires that public water systems not exceed a nitrate concentration that is less than or equal to 10 mg/L because nitrate above this level causes Blue Baby Syndrome in infants. Information for this study was provided in the form of sampling data compiled by the city of Enid. This raw data was then analyzed and distilled to determine nitrate existence and extent using USEPA standards. This article presents a methodology to delineate the high nitrate plumes in five wellfields.

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