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Partition Hillslopes

Description

Separate subwatersheds into headwater and lateral hillslopes.

Usage

Separate subwatersheds into headwater and lateral hillslopes. Headwater hillslopes drain to stream inlets and lateral hillslopes are created by bisecting the relevant catchment area by the drainage line. Hillslope parts that are the size the user defined area threshold or smaller are deleted from the final output.

Parameters

Parameter Name	Type	Direction	Data Type	Dialog Reference
Input Catchments	Required	Input	Feature Layer	Input catchment feature layer following the Arc Hydro data model.
Input Flow Direction Raster	Required	Input	Raster Layer	Input flow direction raster following the Arc Hydro data model.
Input Flow Accumulation Raster	Required	Input	Raster Layer	Input flow accumulation raster following the Arc Hydro data model.
Input Drainage Lines	Required	Input	Feature Layer	Input drainage lines following the Arc Hydro data model.
Input Threshold	Required	Input	Double	Number of cells used as the flow accumulation threshold when creating the drainage lines. This number is used to identify stream inlets. See the user messages for the flow accumulation threshold used in terrain preprocessing steps.
Input Area Threshold	Required	Input	Double	Minimum hillslope area.
Output Hillslopes	Required	Output	Feature Layer	Output hillslope feature class. Any hillslope parts are the size of one cell or smaller are deleted.