Watershed Tool Instructions Figure 2. Watershed delineation

Snapshot showing the steps for watershed delineation in the NHD Watershed Tool

Detailed Description

Figure 2. From left to right and top to bottom: Box 1. Select the point of interest; Box 2. Up-stream navigation is performed on the centerline network and the program calls drainage catchments that have a 1:1 relation to the NHD reaches; Box 3. The catchment where the selected point of interest falls in is split in two and the sub area upstream is isolated from the remaining area; Box 4. The sub-catchment is combined with all up-stream catchments and internal boundaries are dissolved. 

Details

Image Dimensions: 600 x 537

Location Taken: US