ArcGIS REST Services Directory

Layer: Topographic Position (ID: 4)

Name: Topographic Position

Display Field:

Type: Raster Layer

Geometry Type: null

Description: The topographic moisture potential for the conterminous United States was derived to help contribute substrate moisture regimes into the ecosystems model (Cress and others, 2009c). The method used to produce these topographic moisture potential classes was based on the derivation of ground moisture potential using a combination of computed topographic characteristics (CTI, slope, and aspect) and mapped National Wetland Inventory boundaries. This method does not use climate or soil attributes to calculate relative topographic moisture potential since these characteristics are incorporated into the ecosystem model though other input layers. All of the topographic data used for this assessment was derived from the USGS 30-meter NED including the National Compound Topographic Index.

Definition Expression: N/A

Copyright Text: USGS, NatureServe

Default Visibility: false

MaxRecordCount: 0

Supported Query Formats: JSON, AMF, geoJSON

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Supports Advanced Queries: false

Supports Statistics: false

Has Labels: false

Can Modify Layer: false

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Use Standardized Queries: true

Drawing Info: Advanced Query Capabilities:
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Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: null

Fields: None

Supported Operations:   Query   Generate Renderer   Return Updates