LiDAR/BareEarthDTM2021_DNR (ImageServer)

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Service Description: The hydroflattened bare earth digital elevation model (DEM) represents the earth's surface with all vegetation and anthropogenic features removed. It is derived from NIR lidar data using TIN processing of the ground point returns. All rivers greater than 30 meters in width and lakes at least 150 square meters in size have been flattened to consistent elevations. Water boundary polygons were developed using an algorithm which weights Lidar-derived slopes, intensities, and return densities to detect the water's edge. Elevation values were then assigned to the water's edge from the Lidar data creating 3D breaklines enforced during model creation to flatten water bodies. Some elevation values have been interpolated across areas in the ground model where there is no elevation data (e.g. under dense vegetation). Data was processed in reference to NAD83 (CORS96), however the horizontal datum for this dataset is defined as NAD83 (HARN) as the difference is generally small and allows for greater ease of use with data in different datums. The vertical datum is NAVD88, Geoid 03, and the data is projected in Washington State Plane South. Units are in US Survey Feet. NV5 Geospatial collected the Thurston County Lidar data for Washington Department of Natural Resources between 03/27/2021 and 04/03/2021.

Name: LiDAR/BareEarthDTM2021_DNR

Description: The hydroflattened bare earth digital elevation model (DEM) represents the earth's surface with all vegetation and anthropogenic features removed. It is derived from NIR lidar data using TIN processing of the ground point returns. All rivers greater than 30 meters in width and lakes at least 150 square meters in size have been flattened to consistent elevations. Water boundary polygons were developed using an algorithm which weights Lidar-derived slopes, intensities, and return densities to detect the water's edge. Elevation values were then assigned to the water's edge from the Lidar data creating 3D breaklines enforced during model creation to flatten water bodies. Some elevation values have been interpolated across areas in the ground model where there is no elevation data (e.g. under dense vegetation). Data was processed in reference to NAD83 (CORS96), however the horizontal datum for this dataset is defined as NAD83 (HARN) as the difference is generally small and allows for greater ease of use with data in different datums. The vertical datum is NAVD88, Geoid 03, and the data is projected in Washington State Plane South. Units are in US Survey Feet. NV5 Geospatial collected the Thurston County Lidar data for Washington Department of Natural Resources between 03/27/2021 and 04/03/2021.

Single Fused Map Cache: false

Extent:

Initial Extent:

Full Extent:

Pixel Size X: 1.5

Pixel Size Y: 1.5

Band Count: 1

Pixel Type: F32

RasterFunction Infos: {"rasterFunctionInfos": [{ "name": "None", "description": "A No-Op Function.", "help": "" }]}

Mensuration Capabilities: None

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text: Washington Department of Natural Resources

Service Data Type: esriImageServiceDataTypeGeneric

Min Values: 5.768269062042236

Max Values: 2942.95703125

Mean Values: 538.5852991954935

Standard Deviation Values: 507.0253269922129

Object ID Field: OBJECTID

Fields:

OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
Shape ( type: esriFieldTypeGeometry, alias: Shape )
Name ( type: esriFieldTypeString, alias: Name, length: 200 )
Category ( type: esriFieldTypeInteger, alias: Category , Coded Values: [0: Unknown] , [1: Primary] , [2: Overview] , ...6 more... )
CenterX ( type: esriFieldTypeDouble, alias: CenterX )
CenterY ( type: esriFieldTypeDouble, alias: CenterY )

Default Mosaic Method: Northwest

Allowed Mosaic Methods: NorthWest,Center,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bilinear

Max Record Count: 1000

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: 20

Max Mosaic Image Count: 20

Allow Raster Function: true

Allow Copy: null

Allow Analysis: null

Allow Compute TiePoints: false

Supports Statistics: true

Supports Advanced Queries: true

Use StandardizedQueries: true

Raster Type Infos:

Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources: Info Histograms Key Properties Legend Raster Function Infos

Supported Operations: Export Image Query Identify Compute Histograms Compute Statistics Histograms Get Samples Compute Class Statistics Query Boundary Compute Pixel Location Validate Project