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Linear Unit: Meter (1.000000)
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FGDC
ISO 19139 Metadata Implementation Specification
Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333
MiddleRiver_20201028_1
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-121.410379
-121.374199
37.887661
37.830368
Primary purpose is to quantify floating and submerged aquatic vegetation in the channel.
Survey Date and Time:
Data was collected on 10/28/2020 0930-1030 PST
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>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 Undine road to 1 mile downstream of Howard road. The field collection was controlled by a DJI Smart Controller running the DJI Pilot app.</SPAN></P><P><SPAN>Software Processing:Images were imported into ArcGIS Pro 2.6 using the Ortho Mapping workspace tool, block adjusted, and an Orthomosaic was generated. No external control points were used for this project.</SPAN></P><P><SPAN>Adjustment summary from ArcGIS Pro: Number of Adjusted Images 1398 Number of Tie Points 8368632 Number of Solution Points 2982802 Mean Reprojection Error (pixel) 0.20 Ground Resolution (m/pixel) 0.014 Adjustment TypeFrame Ground Control Points Involved in Adjustment No</SPAN></P><P><SPAN>DWR makes no warranties or guarantees —either expressed or implied— 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. This Image Service was published on 11/4/2020, by Gregory Twist of the DWR Division of Engineering, who may be contacted at 916-653-2700, or at gregory.twist@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official DWR point of contact as available and appropriate.</SPAN></P></DIV></DIV>
Michael Baldwin, P.E., California Department of Water Resources, NCRO
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>public domain</SPAN></P></DIV></DIV>
Middle River
Delta
California
orthomosaic
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dataset
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Band_2
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Band_3
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