20210818
09065500
1.0
FALSE
MiddleRiver_20210817_2_dom.crf
002
635739.006000
640371.522000
4193753.949000
4195124.115000
1
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_UTM_Zone_10N
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FALSE
RAW
3
Cache/RAW
TRUE
continuous
unsigned integer
20210819
15130100
20210819
15130100
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595
MiddleRiver_20210817_2_dom.crf
1
-121.456484
-121.403559
37.893519
37.880471
Purpose:
Primary purpose is to quantify floating and submerged aquatic vegetation in the channel.
Survey Date and Time:
Data was collected on 8/17/2021 1015-1100 PST
Imagery Acquisition:
The imagery was collected using a DJI Mavic 2 Pro UAS, operating at 300’ above ground level, along one single flight line following the center line of Middle River between 1 mile downstream of Howard road and Tract Blvd. 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 849
Number of Tie Points 4521677
Number of Solution Points 1581608
Mean Reprojection Error / Sigma Naught (pixel) 0.28 / 0.41
Ground Resolution (m/pixel) 0.023
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 8/19/2021, by Arina Ushakova of the DWR Division of Engineering, who may be contacted at 916-653-3639, or at arina.ushakova@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
Primary purpose is to quantify floating and submerged aquatic vegetation in the channel. Data was collected on 8/17/2021 1015-1100 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
635739.006000 4193753.949000
635739.006000 4195124.115000
640371.522000 4195124.115000
640371.522000 4193753.949000
638055.264000 4194439.032000
220596
0.021000
65246
0.021000
Band_1
255.000000
0.000000
8
Band_2
255.000000
0.000000
8
Band_3
255.000000
0.000000
8
20210819
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