Stream and Watershed Delineation(ArcView Watershed Delineation Tool)
Acquire Digital Elevation Model (DEM) of study area
Fill in the pits, compute flow direction and flow accumulation
Delineate the streams and watersheds
- threshold = 250 cells = 62.5 km2
Process the stream coverage
- identify head and outlet sections
- remove splits
Process the watershed coverage
- dissolve “extra” corner polygons
Compute additional attributes using TXDOT scripts
- flow length
- slope of flow path
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