1 text/xml image/tiff image/png image/png24 image/png32 image/bmp image/gif image/jpeg image/svg image/bil XML INIMAGE BLANK MiddleRiver_20230308_1 Purpose: Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. Survey Date and Time: Data was collected on 3/8/2023 1015-1100 PST Imagery Acquisition: The imagery was collected using a DJI Mavic 2 Pro UAS, operating at 200’ above ground level, along one single flight line following the center line of Middle River from Old River to 1 mile downstream of Howard road. The field collection was controlled by a DJI Smart Controller running the DJI Pilot app. Software Processing: Images were imported into ArcGIS Pro 2.8.0 using the Ortho Mapping workspace tool, block adjusted, and an Orthomosaic was generated. No external control points were used for this project. Adjustment summary from ArcGIS Pro: Number of Adjusted Images 1603 Number of Tie Points 6148293 Number of Solution Points 2305569 Mean Reprojection Error / Sigma Naught (pixel) 0.29 / 0.44 Ground Resolution (m/pixel) 0.014 Adjustment Type Frame Ground Control Points Involved in Adjustment No CRS:84 EPSG:4326 EPSG:32610 -121.407712-121.37289537.82149537.887551