| snippet:
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Third of three Middle River Drone Orthomosaic from missions performed on 1/13/2021. Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. |
| summary:
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Third of three Middle River Drone Orthomosaic from missions performed on 1/13/2021. Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. |
| accessInformation:
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Michael Baldwin, P.E., California Department of Water Resources, NCRO |
| thumbnail:
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thumbnail/thumbnail.JPEG |
| typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"] |
| MinScale:
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1.5E8 |
| description:
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Survey Date and Time: Data was collected on 1/13/2021 1145-1245 PST </SPAN></P><P><SPAN>Imagery Acquisition: The imagery was collected using a DJI Mavic 2 Pro UAS, operating at 400’ above ground level, along two passes to fully cover the channel of Middle River from Tracy Blvd to Victoria Canal. 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 2.7 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 896 Number of Tie Points 6378446 Number of Solution Points 1957966 Mean Reprojection Error / Sigma Naught (pixel) 0.27 / 0.37 Ground Resolution (m/pixel) 0.028 Adjustment Type Frame 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 1/21/2021, by Joel Dudas of the DWR Division of Engineering, who may be contacted at 916-651-7002, or at joel.dudas@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> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>public domain</SPAN></P></DIV></DIV> |
| catalogPath:
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|
| title:
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MiddleRiver_20210113_3 |
| type:
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Image Service |
| url:
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https://parcgis.water.ca.gov/arcgisimgpublicmngr/admin/Aerial_Photography/MiddleRiver_20210113_3/ImageServer |
| tags:
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["Middle River","south Delta","temporary barriers","drone","orthoimagery","natural color"] |
| culture:
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en-US |
| name:
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MiddleRiver_20210113_3 |
| guid:
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|
| MaxScale:
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5000.0 |
| spatialReference:
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WGS_1984_UTM_Zone_10N |