HR: 09:00h
AN: H51L-05    [Abstracts]
TI: Composite Digital Terrain Models: Synthesizing Aerial and Terrestrial LiDAR with Conventional Survey Data to Monitor Sediment Transport Through the Sunol Dam Removal Site
AU: * Storesund, R
EM: rune@berkeley.edu
AF: University of California, Berkeley, 300 Wurster, Berkeley, CA 94720,
AU: Minear, T
AF: University of California, Berkeley, 300 Wurster, Berkeley, CA 94720,
AU: Saleh, R
EM: rohin@acpwa.org
AF: Alameda County Public Works Agency, Building Room- 216A 399 Elmhurst Street, Hayward, CA 94544,
AB: In 2006, the San Francisco Public Utilities Commission removed Sunol dam, located on Alameda Creek, near San Francisco California. The primary goals of the project were to improve fish passage, restore a self- sustaining population of steelhead to the watershed, and eliminate an existing public safety hazard. Approximately 28,300 cubic meters of sand and gravel-sized sediment had accumulated upstream of the dam and was left in place to move downstream naturally over a period of several decades. To create a baseline for future monitoring of sediment transport through the dam area, a combination of Aerial LiDAR, Terrestrial LiDAR, and conventional survey data was compiled and synthesized to generate a three dimensional digital model of the study area both upstream and downstream of the damsite. The primary survey method for characterization of above ground topography was Terrestrial LiDAR, with an approximate point spacing of centimeters. In submerged areas conventional survey techniques were used to augment the Aerial and Terrestrial LiDAR data sets. We found this approach to be effective in developing a high accuracy-high detail sediment volume model from which sediment transport can be monitored and modeled.
DE: 1808 Dams
DE: 1815 Erosion
DE: 1855 Remote sensing (1640)
DE: 1862 Sediment transport (4558)
DE: 1895 Instruments and techniques: monitoring
SC: Hydrology [H]
MN: 2007 Fall Meeting