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MAppFx: Deep Observation Wells

January 9, 2025

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MW Zapata, DK Valerio, MC Snaer, NC Habana  View MAppFx Read Technical Report No. ### View MAppFx Summary Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo. Results Other MAppFx

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MAppFx: Chloride and Production

August 27, 2024

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Matt W. Zapata, Dannika Kate Valerio, Jovic A. Caasi, Mary Clare Snaer & Nathan C. Habana Technical Report (coming soon) View MAppFx Other MAppFx

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MAppFx: Saipan, CNMI – Production Well Chloride

June 13, 2024

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Matt W. Zapata, Dannika Kate U. Valerio, & Nathan C. Habana  Technical Report (coming soon) View MAppFx Other MAppFx

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MAppFx: Saipan, CNMI – Production Well Nitrates

June 12, 2024

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Matt W. Zapata, Dannika Kate U. Valerio, & Nathan C. Habana  Technical Report (coming soon) View MAppFx Other MAppFx

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MAppFx: Southern Guam – Ugum Watershed
Flow Duration Curves

July 11, 2023

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Flow Duration Curves

Nathan C. Habana, Leroy F. Heitz, & Dannika Kate U. Valerio  Read Technical Report No. 181 View MAppFx 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 Ugum Watershed, Southern Guam, are the first phase […]

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MAppFx: Northern Guam Lens Aquifer
Production Well Nitrates

February 28, 2023

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Production Well Nitrates

Dannika Kate U. Valerio, Matt W. Zapata, & Nathan C. Habana Read Technical Report No. 180 View MAppFx 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 Acknowledgements Table […]

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Dynamic Response of the Freshwater Lens to Natural Variations in Recharge Northern Guam Lens Aquifer, Yigo-Tumon Basin, Guam​

February 22, 2023

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Bekah Dougher, Nathan C. Habana, John W. Jenson, Mark A. Lander, and Kevin Ho September 2019 | Technical Report No. 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 […]

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Surface Hydrology of the Northern Guam Lens Aquifer

February 20, 2023

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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 […]

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