20210426
07424200
1.0
FALSE
MiddleRiver_20210422_3_dom.crf
002
632751.561000
635841.333000
4193704.044000
4194690.381000
1
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_UTM_Zone_10N
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FALSE
RAW
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Cache/RAW
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continuous
unsigned integer
20210428
10401400
20210428
10401400
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
MiddleRiver_20210422_3_dom.crf
1
-121.490453
-121.455145
37.890051
37.880709
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 1115-1200 PST
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.
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 890
Number of Tie Points 4682840
Number of Solution Points 1574426
Mean Reprojection Error / Sigma Naught (pixel) 0.26 / 0.37
Ground Resolution (m/pixel) 0.028
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.
Middle River
Delta
California
orthomosaic
UAV
The primary purpose is to quantify floating and submerged aquatic vegetation in the channel. Data were collected on 4/22/2021 1115-1200 PST.
Michael Baldwin, P.E., California Department of Water Resources, NCRO
public domain
Raster Dataset
dataset
EPSG
2.1(3.0.1)
2
1
0
632751.561000 4193704.044000
632751.561000 4194690.381000
635841.333000 4194690.381000
635841.333000 4193704.044000
634296.447000 4194197.212500
114436
0.027000
36531
0.027000
Band_1
255.000000
0.000000
8
Band_2
255.000000
0.000000
8
Band_3
255.000000
0.000000
8
20210428
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