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Service Description: Purpose:
Primary purpose is to quantify floating and submerged aquatic vegetation in the channel.
Survey Date and Time:
Data was collected on 4/22/2021 0945-1030 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 Undine road 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 2.7.3 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 1396
Number of Tie Points 6207493
Number of Solution Points 2333288
Mean Reprojection Error / Sigma Naught (pixel) 0.38 / 0.57
Ground Resolution (m/pixel) 0.014
Adjustment Type Frame
Ground Control Points Involved in Adjustment No
This is an official DWR Image Service, which meets all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.1, dated September 11, 2019.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 4/28/2021, 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.
Name: Aerial_Photography/MiddleRiver_20210422_1
Description: Purpose:
Primary purpose is to quantify floating and submerged aquatic vegetation in the channel.
Survey Date and Time:
Data was collected on 4/22/2021 0945-1030 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 Undine road 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 2.7.3 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 1396
Number of Tie Points 6207493
Number of Solution Points 2333288
Mean Reprojection Error / Sigma Naught (pixel) 0.38 / 0.57
Ground Resolution (m/pixel) 0.014
Adjustment Type Frame
Ground Control Points Involved in Adjustment No
This is an official DWR Image Service, which meets all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.1, dated September 11, 2019.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 4/28/2021, 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.
Single Fused Map Cache: false
Extent:
XMin: 640141.047
YMin: 4188229.5259999996
XMax: 642962.762
YMax: 4194542.066
Spatial Reference: 32610
(32610)
VCSWkid(115700)
LatestVCSWkid(115700)
Initial Extent:
XMin: 640141.047
YMin: 4188229.5259999996
XMax: 642962.762
YMax: 4194542.066
Spatial Reference: 32610
(32610)
VCSWkid(115700)
LatestVCSWkid(115700)
Full Extent:
XMin: 640141.047
YMin: 4188229.5259999996
XMax: 642962.762
YMax: 4194542.066
Spatial Reference: 32610
(32610)
VCSWkid(115700)
LatestVCSWkid(115700)
Pixel Size X: 0.01299999999999985
Pixel Size Y: 0.013000000000000077
Band Count: 3
Pixel Type: U8
RasterFunction Infos: {"rasterFunctionInfos": [{
"name": "None",
"description": "Make a Raster or Raster Dataset into a Function Raster Dataset.",
"help": ""
}]}
Mensuration Capabilities: Basic
Inspection Capabilities:
Has Histograms: true
Has Colormap: false
Has Multi Dimensions : false
Rendering Rule:
Min Scale: 0
Max Scale: 0
Resampling: false
Copyright Text: Michael Baldwin, P.E., California Department of Water Resources, NCRO
Service Data Type: esriImageServiceDataTypeRGB
Min Values: 0, 0, 0
Max Values: 255, 255, 255
Mean Values: 102.57143379923222, 103.70812328717116, 81.542830667524
Standard Deviation Values: 44.56597871028554, 39.16219470588963, 35.200204582369885
Object ID Field:
Fields:
None
Default Mosaic Method: Center
Allowed Mosaic Methods:
SortField:
SortValue: null
Mosaic Operator: First
Default Compression Quality: 75
Default Resampling Method: Bilinear
Max Record Count: null
Max Image Height: 4100
Max Image Width: 15000
Max Download Image Count: null
Max Mosaic Image Count: null
Allow Raster Function: true
Allow Copy: true
Allow Analysis: true
Allow Compute TiePoints: false
Supports Statistics: false
Supports Advanced Queries: false
Use StandardizedQueries: true
Raster Type Infos:
Name: Raster Dataset
Description: Supports all ArcGIS Raster Datasets
Help:
Has Raster Attribute Table: false
Edit Fields Info: null
Ownership Based AccessControl For Rasters: null
Child Resources:
Info
Histograms
Statistics
Key Properties
Legend
Raster Function Infos
Supported Operations:
Export Image
Identify
Measure
Compute Histograms
Compute Statistics Histograms
Get Samples
Compute Class Statistics
Query Boundary
Compute Pixel Location
Compute Angles
Validate
Project