Hydrologic Applications of LiDAR Data, Lecture 3 

Topographic Position Index (TPI) -- Collecting data from the surface (not just seeing it).
From the "Conservation Applications of LiDAR Data" series. Additional lectures, exercises and other training materials are at z.umn.edu/lidar.
Time points: 0:00 - Intro to TPI; 1:10 - definition of TPI; 2:00 - availability of TPI; 2:23 - examples of using the TPI; [3:47 - exercise logistics [delete this] 4:14 - Additional calculations needed to prepare for hydrologic conditioning (watershed delineation and sinks); 4:48 - the problem of "digital dams"; 8:00 - About topographic depressions (sinks) and filling them.

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