| snippet:
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Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. Data was collected on 3/8/2023 1015-1100 PST. |
| summary:
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Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. Data was collected on 3/8/2023 1015-1100 PST. |
| accessInformation:
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Michael Baldwin, P.E., California Department of Water Resources, NCRO |
| thumbnail:
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| typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"] |
| description:
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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
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| licenseInfo:
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public domain |
| catalogPath:
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| title:
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MiddleRiver_20230308_1 |
| type:
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Image Service |
| url:
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https://parcgis.water.ca.gov/arcgisimgpublicmngr/admin/Aerial_Photography/MiddleRiver_20230308_1/ImageServer |
| tags:
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["Middle River","Delta","California","orthomosaic","UAV"] |
| culture:
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en-US |
| name:
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MiddleRiver_20230308_1 |
| guid:
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| spatialReference:
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WGS_1984_UTM_Zone_10N |