Slumgullion Landslide, Colorado

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OT Collection ID: OT.062017.26913.1
OT Collection Name: Slumgullion Landslide, Colorado
Short Name: CO15_Lee_184, CO15_Lee_188, CO15_Lee_191
Collection Platform: Airborne Lidar
Download and Access Products:

Point Cloud (July 3)   Bulk Download     opentopoID: OTLAS.062017.26913.1

Point Cloud (July 7)   Bulk Download     opentopoID: OTLAS.062017.26913.2

Point Cloud (July 10)   Bulk Download     opentopoID: OTLAS.062017.26913.3

Raster (July 3)   Bulk Download     opentopoID: OTSDEM.062017.26913.1

Raster (July 7)   Bulk Download     opentopoID: OTSDEM.062017.26913.2

Raster (July 10)   Bulk Download     opentopoID: OTSDEM.062017.26913.3
Collection Overview: NCALM logo Airborne lidar was collected by NCALM for PI Dr. Hyongki Lee (University of Houston) over the Slumgullion Landslide, Colorado. This dataset includes data from survey one of three in the collection. Three surveys were conducted on July 3, 7, 10, 2015 (DOY 184, 188, 191).

The Slumgullion Earthflow, a slow moving landslide, crawled down the valley about 700 years ago creating the 4 miles (6.4 km) long and 2,000 feet (610 m) wide mass. The earthflow lies a few miles south east of Lake City. The landmark site covers 1,291 acres (522 ha) and is owned by the US Forest Service and the Bureau of Land Management. It is "a striking example of mass wasting (the movement of large masses of earth material)." Lake San Cristobal was dammed by the earthflow. The earthflow has been moving continuously for about 300 years over older stable rock. It moves at a rate of about 7 meters (23 feet) per year.
Slumgullion Earthflow. (2017, April 12). In Wikipedia, The Free Encyclopedia. Retrieved 16:39, June 29, 2017, from

Publications associated with this dataset can be found at NCALM's Data Tracking Center

Dataset Acknowledgement: Lidar data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051.

Dataset Citation: Lee, H. (2015): Slumgullion Landslide, Colorado airborne lidar survey. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. Accessed: 2024-07-13       Copied to Clipboard

Use License: CC BY 4.0

Dataset Keywords: ncalm, earthflow, landslide, geomorphology, colorado, hinsdale county, lidar

Survey Date: 07/03/2015

Publication Date: 06/30/2017
Total number of points:
CO15_Lee_184:   264,163,159 pts
CO15_Lee_188:   274,577,662 pts
CO15_Lee_191:   261,683,169 pts

Area: 15.25 km2

Point Density:
CO15_Lee_184:   17.32 pts/m2
CO15_Lee_188:   15.83 pts/m2
CO15_Lee_191:   15.82 pts/m2

Class 1 - Unclassified216,027,448218,542,257209,264,871
Class 2 - Ground48,135,71156,032,58452,418,298
Class 10 - Rail02,8210

Raster Resolution: 0.5 meter

Coordinate System:
Horizontal: NAD83 (2011) / UTM Zone 13N Meters [EPSG: 26913]
Vertical: NAVD88 (GEOID 12A) [EPSG: 5703]

Units: meter

Survey Report: Reports

LAS Validation Data Report:
Tile index in shapefile format:

Dataset Extent in GeoJSON format:
Point Cloud: CO15_Lee_184.geojson
Point Cloud: CO15_Lee_188.geojson
Point Cloud: CO15_Lee_191.geojson
Raster: CO15_Lee_184.geojson
Raster: CO15_Lee_188.geojson
Raster: CO15_Lee_191.geojson

Dataset Spatial Bounds: North: 38.0167847470336°     South: 37.9741944826579°     East: -107.209741436164°     West: -107.289209317084°
CO15_Lee_191       CO15_Lee_188       CO15_Lee_184