One-Guam Water Resources Information Program (OGWRIP) is an understanding and agreement of shared responsibilities between the Department of Defense (DOD) and the Government of Guam on the management of the island’s most valuable utility water source. DOD has been expanding its operations and facilities with the Marine Corps realignment, which raised concerns about utility water demand and the Island’s Sole Source Aquifer (FR-43), the Northern Guam Lens Aquifer (NGLA). The NGLA contains groundwater, a freshwater lens that supplies 90% of the Island’s utility water. In 2020, Guam Waterworks Authority’s (GWA) General Manager…

About The United States Geological Survey (USGS) has monitored our island’s water resources since 1951. Unfortunately, during the 1990s they were forced to downsize this program because matching support from the Government of Guam was discontinued. This resulted in the abandonment of all deep monitoring wells needed to monitor saltwater intrusion in the north, and most of the stream gages in the south by the mid-1990s. In 1995, the USGS closed its field office at Naval Station, but continued to run a limited monitoring program (out of its Saipan and Honolulu offices).August,…

Mission The Guam Hydrologic Survey Program (GHS) was mandated by the 24th Guam Legislature in October, 1997. Under the program, WERI has been charged with the responsibility to consolidate, inventory, and evaluate all of the current and historical hydrologic data pertaining to Guam. WERI is also responsible for establishing and maintaining a permanent data library for instant data access and retrieval.Between October and the end of December, 1997, WERI identified research assistants to support the program, set up laboratory space, and procured equipment. From January through May, 1998, GHS research assistants visited…