Layers:

Layer: Channel Subject to Migration (0)

Name: Channel Subject to Migration

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: This dataset represents segments of water courses in Snohomish County that are associated with channel migration zones (CMZ). The CMZ-Rivers layer identifies the rivers and streams in Snohomish County where there is a possibility for channel migration to occur due to the forces of erosion and deposition (also referred to as the erosion hazard area). The areas adjacent to these rivers are potentially at a high risk of occupation by a river channel within next 100 years. The layer does not show the lateral extent of the channel migration zone, only the linear geographic extent where significant channel migration could occur. The detailed methodology for determining the lateral extent of the CMZ is contained in Section 2 of the Washington DNR Forest Practices Board Manual [WAC 222], adopted by reference in Section 30.62B.330(2)(a) SCC.

Service Item Id: 020efd8552e7463286767fe4b1f90419

Copyright Text: GIS Division, Dept. of Information Services. Unfortunately, documentation outlining the original methodology, specific author, or creation date is currently unavailable.

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MaxRecordCount: 2000

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Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

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Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
XMin: 1264324.0559135526
YMin: 284490.5006978959
XMax: 1504016.0020536333
YMax: 539402.3278154731
Spatial Reference: 102748  (2285)  LatestVCSWkid(0)



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Supports Percentile Statistics: true
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Layer: Littoral Drift (1)

Name: Littoral Drift

Display Field: WS_LLID_NR

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Littoral drift, or shore drift, is the process by which beach sediment is moved along the shoreline. Drift results primarily from the oblique approach of wind-generated waves and can therefore change in response to short-term (daily, weekly, or seasonally) shifts in wind direction. Over the long term, however, many shorelines exhibit a single direction of net shore drift. Net shore-drift is determined through geomorphologic analysis of beach sediment patterns and of coastal landforms. Many shorelines can be divided into discrete littoral, or drift, cells, which are independent of one another and for which distinct sediment sources and sinks can be identified. This coverage denotes the extent of individual littoral cells and the direction of net shore-drift within each.

Service Item Id: 020efd8552e7463286767fe4b1f90419

Copyright Text: Washington State Department of Ecology, Shorelands and Environmental Assistance Program

Default Visibility: true

MaxRecordCount: 2000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
XMin: 688445.409444809
YMin: -261758.82182753086
XMax: 1308980.1526248008
YMax: 769350.8987573087
Spatial Reference: 102748  (2285)  LatestVCSWkid(0)



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Layer: Soil Erosion Hazard (2)

Name: Soil Erosion Hazard

Display Field: MUNAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: SSURGO was acquired by Snohomish County DIS in April 2000. The data is a replacement for the county's original soils data set DNRsoils.SSURGO is a part of a national soils database known as Soil Survey Geographic. SSURGO is the most detailed level of soil mapping done by the Natural Resources Conservation Service (NRCS), a branch of the USDA. SSURGO digitizing duplicates the original soil survey maps. This level of mapping is designed for use by landowners, townships, and county natural resource planning and management. The user should be knowledgeable of soils data and their characteristics.NRCS documentation: \\snoco\gis\dis\gis\proj\metadata\ssurgo_soils

Service Item Id: 020efd8552e7463286767fe4b1f90419

Copyright Text: Snohomish County Information Technology

Default Visibility: true

MaxRecordCount: 2000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

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Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

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Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

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YMin: 284411.46148589253
XMax: 1482432.2233708948
YMax: 477544.2694452256
Spatial Reference: 102748  (2285)  LatestVCSWkid(0)



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