At the 2025 University of Guam’s (UOG) Conference on Island Sustainability, held at the Hyatt Regency Guam, Ms. Dannika Kate Valerio, Research Assistant and Information Manager at UOG’s Water and Environmental Research Institute (WERI), presented “MAppFx: Bringing Guam’s Data into the Future” during the Thriving Natural Resources – Terrestrial Session 1.
In today’s era of Big Data, Ms. Valerio emphasized the growing importance of accessible and centralized water resource data to support researchers, water managers, and agencies responsible for protecting and producing Guam’s water.
She introduced MAppFx, an interactive and innovative web-based mapping platform designed for hydrologic data visualization, integrating key datasets—including nitrate, chloride, and production data from Guam Waterworks Authority (GWA) production wells, chloride data from Saipan, and freshwater lens thickness from Guam’s deep observation wells.
Designed with accessibility and collaboration in mind, MAppFx empowers local agencies and the broader community with easy-to-use tools for visualizing and understanding Guam’s water resources. All data are accessible through the Guam Hydrologic Survey (GHS) website.
Looking ahead, Ms. Valerio previewed the exciting future of MAppFx, including the development of GeoGal (Geology Gallery)—a visual database of geologic field samples across Guam that aims to enhance geoscience education.
MAppFx isn’t just a platform—it’s a leap forward in making Guam’s hydrologic data more connected, more useful, and more impactful for the future of water sustainability in the Marianas.
WERI research assistant, Ms. Dannika Valerio, presents MAppFx at the UOG Center for Island Sustainability 2025 Conference during the “Thriving Natural Resources” section on Apr. 10, 2025. Photo by WERI.
