Global Surface Delineation

Title  Global Surface Delineation

Summary

Batch stormwater watershed delineation.


Usage

Syntax

Parameter Explanation
Input_Batch_Point

Input Batch Point features being processed. The tool will work on a selected set or on all input points if there is no selected set.
Snap_Distance (Optional)

Snap Distance used to determine whether the input point is located on a Junction or on a Open Channel feature.

If a snap distance is specified and the point is within the snap distance of a Junction or an Open Channel (if not Junction has been found), then point will be snapped to the Junction or to the closest point on an Open Channel features.
Input_Catalog_Layer

Input Catalog Layer
Input_Delineation_Type

The tool supports 3 types of delineation:

  • Full Delineation

  1. If the point is on a junction, trace upstream and find the Sink Watershed features associated to each upstream junction as well as to the initial junction.

  2. If the point is on a stream, perform a local overland watershed delineation and perform an upstream trace and return the Sink Watershed features associated to the upstream junctions.

  3. If the point is on a closed pipe, it is considered as being within the pipe, trace upstream and find the Sink Watershed features associated to each upstream junction

  4. In all other cases (land), returns the locally delineated watershed.

  • Direct Surface Contribution

  1. If the point is on a junction, return the SinkWatershed feature associated to the junction only.

  2. If the point is on a stream, perform a local overland watershed delineation only.

  3. If the point is on a closed pipe, it is considered as being on the surface outside of the pipe, perform a local overland watershed delineation only.

  4. In all other cases (land), returns the locally delineated watershed.

  • Simulated Inlet Delineation

  1. If the point is on a junction, trace upstream and find the Sink Watershed features associated to each upstream junction as well as to the initial junction.

  2. If the point is on a stream, perform a local overland watershed delineation and perform an upstream trace and return the Sink Watershed features associated to the upstream junctions.

  3. If the point is on a closed pipe, it is considered to be a new inlet, perform a local overland delineation and trace upstream and find the Sink Watershed features associated to each upstream junction

  4. In all other cases (land), returns the locally delineated watershed.
Output_Watershed

Output Watershed polygon feature class.
Output_Watershed_Point

Output Watershed Point point feature class.

Code Samples

Tags

Arc Hydro; Storm water;Watershed;Delineation

Credits

Use limitations