LIDAR-Derived DEM Differencing As An Approach To Identify Potential Stream Stabilization Projects In Suburban Philadelphia
Stream restoration has become an increasingly common strategy utilized by watershed restoration agencies to obtain nutrient and sediment reductions to comply with Municipal Separate Storm Sewer System (MS4) and Total Maximum Daily Load requirements. As such, practitioners are seeking more efficient methods to evaluate stream reaches where sediment delivery could be reduced, and to report credits for sediment and nutrient reductions. Traditional methods to estimate credit for streambank stabilization include monitoring and modeling approaches, such as the Bank and Nonpoint Source Consequences of Sediment (Rosgen, 2001) method used for MS4 crediting in the Chesapeake Bay watershed and in other parts [...]