Topographic Analysis using the National Elevation Dataset
This site contains topographical research obtained from the analysis of digital data provided by the National Elevation Dataset in 2011.
The National Elevation Dataset has been absorbed into the latest USGS elevation dataset called 3DEP. Data can be obtained
from The National Map.
Analysis of summit steepness for peaks in the western US states will be of use for hikers and climbers looking for overlooked, potentially
challenging peaks to climb, or areas with rugged terrain to visit.
The three ranking criteria at distance outward from summit at 100m/800m:
1. Maximum vertical angle of steepness in any direction. This measures the steepest single line at the given distance.
2. Highest vertical minimal angle of steepness in any direction outward from summit. Every other direction will have a more severe
drop than this figure. At 100m this measure favors sharp spires, at 800m, uniform cones.
3. Average angle of steepness in all directions. Best measure for all around steepenss of a summit at the given distance interval.
At 100m, sharp spires are identified, 800m favors larger mountains with significant drops in all directions.
For an old version of this website, click here
This site is the result of independent research and is not affiliated with the USGS or supported by public funds.
Tim Worth Copyright 2011-2017. Some rights reserved. To contact the author, email tworth87 at yahoo dot com .