Description: This polygon feature class was created to model the flight coverage of geo-rectified aerial photography for the State Water Project for each flight group. The coordinate system utilized for this feature class is NAD1983_CaTM. The purpose for the creation of this dataset is to help classify the various flight groups according to the corresponding project ID and supply relevant spatial data information. To create the photo centers, archived aerial photography was first scanned and converted to .tiff file format that would be later geo-referenced to NAIP 2016. The photo centers at the ends of each fight line would be marked using the polygon drawing tool by creating an "X" from the vertex of each corner fiducial. The flight line would then be created using these photo center for end points with a line feature class. The photo centers were then created by constructing points using the editor tool. To develop the coverage extent, the photo scale was inputted into an excel flight plan distance calculator to formulate coverage distance. Next, the buffer tool under the geo-processing tab was utilized to input the coverage distance found previously to create the flight coverage area.
Copyright Text: State of California Department of Water Resources.