Sedimentation survey of Fena reservoir, Guam, Mariana Islands, 1979
Fena Reservoir, in south-central Guam, was constructed in 1950-51 to provide a dependable water supply for the US Navy. At the request of the US Navy, the US Geological Survey conducted a sedimentation survey of 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 7863 acre-feet. 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. 5 refs., 8 figs., 1 tab.
- Research Organization:
- Geological Survey, Honolulu, HI (USA). Water Resources Div.
- OSTI ID:
- 5516584
- Report Number(s):
- USGS/WRI-84-4125; ON: TI85901797
- Country of Publication:
- United States
- Language:
- English
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