Sink (Spatial Analyst)

License Level:BasicStandardAdvanced

Summary

Creates a raster identifying all sinks or areas of internal drainage.

Learn more about how Sink works

Usage

Syntax

Sink (in_flow_direction_raster)
ParameterExplanationData Type
in_flow_direction_raster

The input raster that shows the direction of flow out of each cell.

The flow direction raster can be created using the Flow Direction tool.

Raster Layer

Return Value

NameExplanationData Type
out_raster

The output raster that shows all the sinks (areas of internal drainage) on the input surface.

Raster

Code Sample

Sink example 1 (Python window)

This example identifies the sinks on an input flow direction GRID raster.

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outSink = Sink("flowdir")
outSink.save("C:/sapyexamples/output/outsink01")
Sink example 2 (stand-alone script)

This example identifies the sinks on an input flow direction GRID raster.

# Name: Sink_Ex_02.py
# Description: Creates a raster identifying all sinks or areas of internal drainage.
# Requirements: Spatial Analyst Extension

# Import system modules
import arcpy
from arcpy import env
from arcpy.sa import *

# Set environment settings
env.workspace = "C:/sapyexamples/data"

# Set local variables
inFlowDirectionRaster = "flowdir"

# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")

# Execute FlowDirection
outSink = Sink(inFlowDirectionRaster)

# Save the output 
outSink.save("C:/sapyexamples/output/outsink02")

Environments

Related Topics

Licensing Information

ArcGIS for Desktop Basic: Requires Spatial Analyst
ArcGIS for Desktop Standard: Requires Spatial Analyst
ArcGIS for Desktop Advanced: Requires Spatial Analyst
11/8/2012