Directions to Fix a DEM That Has
"No Data" Values of 32767, -9999 ...:

1. Import the DEM into ArcView as a grid. When the color elevation theme appears, it will show a maximum elevation of 32767.

2. Make the grid active, then choose Analysis/Map Calculator, and enter:

([GridName]<32767)

Then press the "Evaluate" button and close the Map Calculator box. It should create a "Map Calculation 1" theme.

3. Choose Analysis/Map Calculator again, this time enter:

([Map Calculation 1].Not.SetNull([GridName]))

Then press the "Evaluate" button and close the Map Calculator box. It should create a "Map Calculation 2" theme. This is the one you want.

4. Delete the original grid and the "Map Calculation 1" theme and rename the "Map Calculation 2" to your grid name.