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Service Description: This raster represents measurements of vertical ground surface displacement in more than 200 of the high-use and populated groundwater basins across the State of California between December of 2022 and December of 2023. Image resolution (X,Y) is 0.0011335842, 0.00089982004 degrees, or approximately 100 meters. Vertical ground surface displacement estimates are derived from Interferometric Synthetic Aperture Radar (InSAR) data that are collected by the European Space Agency (ESA) Sentinel-1A satellite and processed by TRE ALTAMIRA, under contract with to the California Department of Water Resources (DWR) as part of DWR’s SGMA technical assistance to provide important SGMA-relevant data to GSAs for GSP development and implementation. Sentinel-1A InSAR data coverage for the entire study area began in June 13, 2015. The Department of Water Resources makes no warranties, representations or guarantees, either expressed or implied, as to the accuracy, completeness, correctness, or timeliness of the information in this dataset, nor accepts or assumes any liability arising from use of these data. Neither the Department nor any of the sources of this information shall be responsible for any errors or omissions, or for the use or results obtained from the use of this information. A Groundwater Sustainability Agency is not required to use these data, and their use does not guarantee the adequacy of a Groundwater Sustainability Plan that relies on such data. This is an official DWR Image Service, published on 6/10/2024 by Nate Cheshier of the DWR Geomatics Office, who may be contacted at Nathan.cheshier@water.ca.gov or (916) 603-6576. Date of acquisition: Between January of 2015 and April of 2024. Date of production: 2024. Date of delivery of product: Delivered from TRE ALTAMIRA to DWR in June of 2024. Processing steps: See Technical Report: InSAR land surveying and mapping services to DWR supporting SGMA - January 2024 Update, TRE ALTAMIRA, 2024. Pixel value definitions: Vertical ground surface displacement in feet for time period specified above. Positional accuracy: See: InSAR Data Accuracy for California Groundwater Basins - CPGS Data Comparative Analysis - January 2015 to September 2019, Towill Inc., 2020.
Name: SAR/Vertical_Displacement_TRE_ALTAMIRA_Annual_Rate_20221201_20231201
Description:
Single Fused Map Cache: false
Extent:
XMin: -124.4223368919088
YMin: 32.31752728112403
XMax: -115.40694204863348
YMax: 42.25513975862853
Spatial Reference: 4326
(4326)
Initial Extent:
XMin: -124.4223368919088
YMin: 32.31752728112403
XMax: -115.40694204863348
YMax: 42.25513975862853
Spatial Reference: 4326
(4326)
Full Extent:
XMin: -124.4223368919088
YMin: 32.31752728112403
XMax: -115.40694204863348
YMax: 42.25513975862853
Spatial Reference: 4326
(4326)
Pixel Size X: 0.001133584162363299
Pixel Size Y: 8.998200359928017E-4
Band Count: 1
Pixel Type: F32
RasterFunction Infos: {"rasterFunctionInfos": [
{
"name": "Annual_Classification_8classes",
"description": "A raster function template.",
"help": ""
},
{
"name": "None",
"description": "",
"help": ""
}
]}
Mensuration Capabilities: Basic
Inspection Capabilities:
Has Histograms: true
Has Colormap: false
Has Multi Dimensions : false
Rendering Rule:
Min Scale: 0
Max Scale: 0
Copyright Text: California Department of Water Resources
Service Data Type: esriImageServiceDataTypeGeneric
Min Values: -0.47285088896751404
Max Values: 0.5755164623260498
Mean Values: -0.0010119059477332825
Standard Deviation Values: 0.05338202126362982
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
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Project