Guam Hydrologic Survey

Nathan C. Habana, Leroy F. Heitz, Dannika Kate U. Valerio July 2023  Technical Report No. 181 WERI MAppFx: Southern Guam – Ugum Watershed Flow Duration Curves Summary Guam hydrologic information, of streamflow duration curves, is the second WERI online data visualization interface, a MAppFx product. The streamflow duration curves of the Ugum River in the […]

Dannika Kate U. Valerio, Matt W. Zapata, Nathan C. Habana February 2023 Technical Report 180WERI MAppFx: Production Well Nitrates Map of Guam’s Production Wells (active and inactive) Above shows all the located production wells with Nitrate-N concentration records. Marker colors refer to well owner blue (US Military), green (GWA), gray (private). Table of Contents Select […]

Bekah Dougher, Nathan C. Habana, John W. Jenson, Mark A. Lander, and Kevin Ho September 2019 Technical Report 168 Abstract The limestone aquifer of northern Guam supplies more than 75% of the island’s drinking water. As Guam prepares for more economic growth, demand for water is a major concern. The quantity of groundwater available for […]

Nathan C. Habana, Leroy F. Heitz, Dannika Kate U. Valerio March  21, 2022 Technical Report 175Hydrologic Web MApps Table of Contents Abstract & IntroductionBackgroundMethodsResultsWeb MAppsConclusion Acknowledgements Guam Hydrologic Survey (GHS) Program, DOI USGS WERI-RCUOG, Kumisión I Na’an Lugåt Guahan GHS interagency partners: GWA, GBSP, GDLM, and Maria Kottermair Abstract The mapping of the surface hydrology […]