| snippet:
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First of two Old River Drone Orthomosaic from missions performed on 1/14/2021. Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. |
| summary:
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First of two Old River Drone Orthomosaic from missions performed on 1/14/2021. 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 1/14/2021 1115-1200 PST </SPAN></P><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 Old River from Doughty Cut to 1.5 miles downstream of Tracy 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 2.7 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 1259 Number of Tie Points 2643785 Number of Solution Points 1036051 Mean Reprojection Error / Sigma Naught (pixel) 0.37 / 0.57 Ground Resolution (m/pixel) 0.014 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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OldRiver_20210114_1 |
| type:
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Image Service |
| url:
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https://parcgis.water.ca.gov/arcgisimgpublicmngr/admin/Aerial_Photography/OldRiver_20210114_1/ImageServer |
| tags:
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["Old River","south Delta","temporary barriers","drone","orthoimagery","natural color"] |
| culture:
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en-US |
| name:
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OldRiver_20210114_1 |
| guid:
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|
| MaxScale:
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5000.0 |
| spatialReference:
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WGS_1984_UTM_Zone_10N |