Title:

Structure-from-motion-derived digital elevation models and topographic changes detected following removal of the Lake George Diversion Dam

Author(s):

Bransky, Nathaniel D.; Sankey, Temuulen Ts.; Lewis, Rayni P.; LaSala, Blase; Tatum, Julia C.; Tenny, Johnathan T.; Valentine, George P.; Shobe, Charles M.

Publication Year:

2026

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Bransky, Nathaniel D.; Sankey, Temuulen Ts.; Lewis, Rayni P.; LaSala, Blase; Tatum, Julia C.; Tenny, Johnathan T.; Valentine, George P.; Shobe, Charles M. 2026. Structure-from-motion-derived digital elevation models and topographic changes detected following removal of the Lake George Diversion Dam. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2026-0048

Abstract:

These data were collected for the U.S. Forest Service to monitor topographic changes following the removal of the Lake George Diversion Dam at the mouth of Eleven Mile Canyon in Colorado. Data were collected by Northern Arizona University using a Sensefly eBee X drone (AgEagle, Lausanne, Switzerland) equipped with a Duet M multispectral sensor and modelled using a Structure From Motion (SfM) algorithm in Pix4D Mapper. The data are registered to a concurrently collected LiDAR dataset which was georeferenced using real time kinematic (RTK) global positioning system (GPS) data. They are published here as digital elevation model (DEM) rasters representing the surface elevation before dam removal (2023), after dam removal (2025), and a raster representing topographic changes between surveys detected in meters.

Keywords:

elevation; environment; geoscientificInformation; inlandWaters; structure; Natural Resource Management & Use; Restoration; natural resource management; dam; dam removal; digital elevation model; geomorphic change detection; structure from motion; remote sensing; topography; Colorado; Eleven Mile Canyon; Lake George; South Platte River; Park County

Related publications:

• Tatum, Julia C.; Sankey, Temuulen Ts.; Bransky, Nathaniel D.; Lewis, Rayni P.; LaSala, Blase; Valentine, George P.; Shobe, Charles M. Unknown. Detecting geomorphic change in river corridors: Comparison of simultaneous localization and mapping (SLAM) mobile Lidar and uncrewed aerial vehicle structure-from-motion at a dam removal site. River Research and Applications. [In review].
• Bransky, Nathaniel D.; Sankey, Temuulen Ts.; Lewis, Rayni P.; LaSala, Blase; Tatum, Julia C.; Tenny, Johnathan T.; Valentine, George P.; Shobe, Charles M. 2026. LiDAR-derived digital elevation models and topographic changes detected following removal of the Lake George Diversion Dam. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2026-0047

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