Common use of Other Techniques Clause in Contracts

Other Techniques. No appropriate data are available for the Mashel watershed study area to attempt an NAIP Stereo or aerial IfSAR assessment approaches. Due to the high stand density and poor ground visibility in the riparian areas the manual stream digitization from aerial orthophotography by a technician were not attempted. Moreover, the accuracy of such manually approaches is also unknown and not believed to exceed accuracies feasible form LiDAR, with similar field data needs required to test the accuracies. Unfortunately, because of the issue of shadows in optical imagery, the utility of such data to manually clean up or improve on the features such as culvert locations in LiDAR data is unfeasible.