{ "currentVersion": 11.3, "serviceDescription": "Purpose:\n\tThe Primary purpose of this UAV mission is to delineate the remaining wetted channel following the high water (flood) events of Spring 2023. The Phantom 4-RTK was used for this specific mission plus additional ground control in order to create a high-quality DEM to reflect the post-flood existing ground surface within the Paradise Cut flood plain (Levee to Levee) and develop subsequent products (contours, orthophotos, etc.).\nSurvey Date and Time:\n\tData was collected on 8/9/2023 1015-1230 PST \nImagery Acquisition:\n\tThe imagery was collected using a Phantom 4 PRO RTK, operating at 250\u2019 above ground level, multiple flight lines criss-crossing the center line of Paradise Cut from the weir on the San Joaquin River to the confluence with Old River. The field collection was controlled by a DJI Smart Controller running the DJI Pilot app.\nSoftware Processing:\n\tImages were imported into AgiSoft using GCP\u2019s the precise RTK-GPS values, block adjusted, and an Orthomosaic was generated. \nAdjustment summary from AgiSoft\nNumber of Adjusted Images\t1473 \nNumber of Tie Points\t9467196 \nNumber of Solution Points\t3053413\nMean Reprojection Error / Sigma (cm/pixel)\t3.8cm \nGround Resolution GSD (cm/pixel)\t7.6cm\nAdjustment Type\tGCP\u2019s - Tragets\nGround Control Points Involved in Adjustment\t16 GCP\u2019s\n\n\nThis is an official DWR Image Service, which meets all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standards version 3.5, dated September2023.\n\n DWR makes no warranties or guarantees \u2014 either expressed or implied \u2014 as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data.\n\nThis Image Service was published on 1/8/2024, by the DWR Division of Engineering. Comments, problems, improvements, updates, or suggestions should be forwarded to the official DWR point of contact as available and appropriate at gis@water.ca.gov", "name": "Aerial_Photography/ParadiseCut_20230809", "description": "Purpose:\n\tThe Primary purpose of this UAV mission is to delineate the remaining wetted channel following the high water (flood) events of Spring 2023. The Phantom 4-RTK was used for this specific mission plus additional ground control in order to create a high-quality DEM to reflect the post-flood existing ground surface within the Paradise Cut flood plain (Levee to Levee) and develop subsequent products (contours, orthophotos, etc.).\nSurvey Date and Time:\n\tData was collected on 8/9/2023 1015-1230 PST \nImagery Acquisition:\n\tThe imagery was collected using a Phantom 4 PRO RTK, operating at 250\u2019 above ground level, multiple flight lines criss-crossing the center line of Paradise Cut from the weir on the San Joaquin River to the confluence with Old River. The field collection was controlled by a DJI Smart Controller running the DJI Pilot app.\nSoftware Processing:\n\tImages were imported into AgiSoft using GCP\u2019s the precise RTK-GPS values, block adjusted, and an Orthomosaic was generated. \nAdjustment summary from AgiSoft\nNumber of Adjusted Images\t1473 \nNumber of Tie Points\t9467196 \nNumber of Solution Points\t3053413\nMean Reprojection Error / Sigma (cm/pixel)\t3.8cm \nGround Resolution GSD (cm/pixel)\t7.6cm\nAdjustment Type\tGCP\u2019s - Tragets\nGround Control Points Involved in Adjustment\t16 GCP\u2019s\n\n\nThis is an official DWR Image Service, which meets all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standards version 3.5, dated September2023.\n\n DWR makes no warranties or guarantees \u2014 either expressed or implied \u2014 as to the completeness, accuracy, or correctness of the data. 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