4. Distance to Water Source Input - Derivation
Task 1: Convert NHD waterbodies to polyline (for distance to water input)
- Step 1: Use the “Polygon to Line” command:
Step 2: Use the “Merge” command to combine the resulting lakes polyline with the NHD perennial streams include streams outside your project area.
Task 2: Use the Euclidean Distance command to calculate distance to water sources
- Step 1: Load the input layer, generated in the previous task: NHD_Lakes_Perennial_Streams
- Step 2: Assign an output grid name
Step 3: Clip the output raster NHD_Lakes_Streams_For Euclidean_Distance.img by your area of interest.
Use “Extract by Mask”:
Step 4: Convert to an ASCII raster using the “Raster to ASCII” command.
Your euclidean distance should look something like the above.
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