Sedimentation survey of Fena Reservoir, Guam, Mariana Islands, 1979

Water-Resources Investigations Report 84-4125



Fena Reservoir, in south-central Guam, was constructed in 1950-51 to provide a dependable water supply for the U.S. Navy. At the request of the U.S. Navy, the U.S. Geological Survey conducted a sedimentation survey of the Fena Reservoir during the months of November and December 1979. The sedimentation survey showed that at the spillway elevation, the reservoir has a surface area of 195 acres and a volume of 7,863 acre-ft. Data from a network of 30 triangulation stations and 32 cross sections indicated a decrease of 440 acre-feet in reservoir capacity since 1949 due to the accumulation of sediment. Area capacity curves for 1949, 1973, and 1979 and a bathymetric map of the reservoir were constructed. The combination of denser water due to lower temperature and suspended sediment load appears to create a density current within the reservoir. Particle size analyses and unit-weight computation are provided to define the physical characteristics of the accumulated sediment. (Author 's abstract)
Publication type Report
Publication Subtype USGS Numbered Series
Title Sedimentation survey of Fena Reservoir, Guam, Mariana Islands, 1979
Series title Water-Resources Investigations Report
Series number 84-4125
DOI 10.3133/wri844125
Edition -
Year Published 1984
Language ENGLISH
Publisher U.S. Geological Survey,
Description iv, 15 p. :ill., map ;28 cm.
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