This tool can be used to remove pits from a digital elevation model (DEM). Pits are single grid cells with no downslope neighbours. They are important because they impede overland flow-paths. This tool will remove any pit in the input DEM that can be resolved by lowering one of the eight neighbouring cells such that a flow-path can be created linking the pit to a second-order neighbour, i.e. a neighbouring cell of a neighbouring cell. Notice that this tool can be a useful pre-processing technique before running one of the more robust depression filling or breaching techniques, which are designed to remove larger depression features.
The following is an example of a Python script that uses this tool:
wd = pluginHost.getWorkingDirectory()
inputFile = wd + "DEM.dep"
outputFile = wd + "output.dep"
args = [inputFile, outputFile]
pluginHost.runPlugin("BreachPits", args, False)
This is a Groovy script also using this tool:
def wd = pluginHost.getWorkingDirectory()
def inputFile = wd + "DEM.dep"
def outputFile = wd + "output.dep"
String[] args = [inputFile, outputFile]
pluginHost.runPlugin("BreachPits", args, false)