Topo Tools--A Collection of Topographic Modeling Tools for ArcInfo

Author: David Colridge Hatfield
Organization: USDA Forest Service

333 SW 1st Ave.
Portland, OR 97208
USA

Phone: 503-808-2878
Fax: 503-808-2586
dchatfield@fs.fed.us

Topo Tools is a collection of five AML/Java tools related to topographic modeling. ENFORCE minimizes the contour biasing (i.e., terracing) that is present in some DEMs. SLOPEPOSITION calculates slope position from 0 (valley floors) to 100 (ridge tops). STREAMLINE2 generates streams from an elevation grid. It uses a process similar to that described in GRID, but allows for flow in any direction (by approximation), not just the eight cardinal directions. VISIBILITY2 is similar to GRID VISIBILITY, but has a magnitude option. ZONALGEOMORPH calculates geomorphic statistics, such as slope, aspect, and curvature, for the zones in a grid.