About:
This map illustrates the nitrate concentrations in production wells. The contents of this analysis overlays the map of the Northern Guam Lens Aquifer (NGLA).
Updates:
Last updated in 2021.
Desktop view:
https://werinch2018.maps.arcgis.com/apps/webappviewer/index.html?id=7c8d643f3b6f4e31bd03d236468ba484
Shape Files:
Basement topography | Elevation contours, meters, Vann, Bendixson, Habana 2018
Basement contours | Select contours 0, -20, -40 meters
Saltwater toe extracted from groundwater model | No pumping, 50% isochlor, Gingerich 2014
Aquifer basins 2021 | Basement and flow line delineation, from Gingerich 2013 model
Water table contours | No pumping condition, from Gingerich 2013 model
NGLA Map 2021 | Basic shapefiles package