The objective of this project is to research and develop a high-resolution subbottom profiling system for use in flood-control reservoirs. This system will have the capability of contrasting the pre-dam topography from the post-dam sediment accumulation. Model-based inversions will be applied for the purpose of sediment characterization. Research will also include acoustic techniques for the assessment of dam integrity. Nearly 11,000 flood control dams have been constructed by the United States Department of Agriculture nationwide in 2,000 watersheds since 1944. These watershed projects represent a $14,000,000,000 infrastructure, providing flood control, municipal water supply, recreation, and wildlife habitat enhancement. Some of these dams are exceeding their projected life expectancy of 50 years. Sedimentation within reservoir impoundments has reduced water-holding capacity, structural components have deteriorated, and safety regulations have become stricter.

SPONSOR: US Department of Agriculture Agricultural Research Service