Three-Dimensional Mapping of Mammal Burrow Networks in California Levees
At three locations in the Sacramento, California area, the USGS Western Remote Sensing and Visualization Center (WRSVC) has utilized tripod-mounted lidar to map the three-dimensional (3D) extent of mammal burrows and tree-root casts, which can substantially compromise the structural integrity of flood-control levees. The burrows and casts were filled with grout and/or polyurethane and then carefully excavated, exposing the network of interconnected voids. An incremental sequence of excavations followed by lidar scans enabled 3D mapping of the burrow and cast networks.