2025 Gad Valley Rock Glacier UAV Lidar Data

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Dataset Information

As part of an ongoing USGS StateMap funded research project on rock glaciers in Utah, the Utah Geological Survey (UGS) collected point cloud data of a small rock glacier in September 2025. This is the third data acquisition for this project, with the others being in September 2023 and 2024. The project area is located within Snowbird Ski Resort in Little Cottonwood Canyon, Salt Lake County, Utah. The goal of this project is to perform yearly repeat flights of the area and conduct topographic differencing to detect changes and movement in the body of the rock glacier.

opentopoID: OTDS.102025.32612.3
DOI: https://doi.org/10.5069/G98W3BJT
Platform: Airborne Lidar
Data Format: Point Cloud, Raster
Dataset Acknowledgement: We would like to acknowledge Snowbird Ski Resort for providing access to fly this area and collect data.
Dataset Citation: Hiscock, A. (2025). 2025 Gad Valley Rock Glacier UAV Lidar Data. Distributed by OpenTopography. https://doi.org/10.5069/G98W3BJT. Accessed: 2025-12-25
Survey Date: 09/23/2025
Survey Area: 0.37 km2
Publication Date: 10/22/2025
Total Number of Points: 339,729,584 pts
Point Density: 911.23 pts/m2
Coordinates System:
Horizontal: WGS 84 / UTM zone 12N [EPSG: 32612]
Vertical: NAVD88 [EPSG: 5703]

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3D Point Cloud Viewer


Spatial Extent
Point Cloud Extent Raster Extent

Show Data Files

    Point Cloud
  File Name Size Points Area (m2) Density  
1     GadValley_PtCld_2025_pt1.laz     1.30 GB     175,082,351     214,618     815.79         File Metadata    
SpatialReference: 
COMPD_CS["WGS 84 / UTM zone 12N + NAVD88 heights",PROJCS["WGS 84 / UTM zone 12N",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.25722356049,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32612"]],VERT_CS["NAVD88 height",VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5703"]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (40.55727987434823, -111.65756000706727, 3300.898)
South-West (Lat, Lon, Elevation): (40.5514784753574, -111.66285557844357, 3080.907)

Projected Coordinates (X, Y) - EPSG:32612
North-East (X, Y): (444329.6307, 4489820.536)
South-West (X, Y): (443876.4497, 4489179.928)

Classifications:
Class 2 (Ground)175,082,351
2     GadValley_PtCld_2025_pt2.laz     1.28 GB     164,647,233     158,208     1,040.7         File Metadata    
SpatialReference: 
COMPD_CS["WGS 84 / UTM zone 12N + NAVD88 heights",PROJCS["WGS 84 / UTM zone 12N",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.25722356049,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32612"]],VERT_CS["NAVD88 height",VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5703"]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (40.560275615384576, -111.65540772870392, 3100.933)
South-West (Lat, Lon, Elevation): (40.55672561060183, -111.66116118724558, 2928.186)

Projected Coordinates (X, Y) - EPSG:32612
North-East (X, Y): (444514.3217, 4490151.712)
South-West (X, Y): (444024.2837, 4489761.293)

Classifications:
Class 2 (Ground)164,647,233
  Summary 2.59 GB     339,729,584     372,826     911.23      
    Raster Data
  File Name Size Resolution Dimensions Layer Type  
1     GadValleyRG_50cmDEM_2025.tif     10.48 MB     0.5 meter     1341 x 2046     Digital Surface Model (DSM)             File Metadata    
SpatialReference 
PROJCRS["WGS 84 / UTM zone 12N",             BASEGEOGCRS["WGS 84",                 DATUM["World Geodetic System 1984",                     ELLIPSOID["WGS 84",6378137,298.25722356049,                         LENGTHUNIT["metre",1]]],                 PRIMEM["Greenwich",0,                     ANGLEUNIT["degree",0.0174532925199433]],                 ID["EPSG",4326]],             CONVERSION["UTM zone 12N",                 METHOD["Transverse Mercator",                     ID["EPSG",9807]],                 PARAMETER["Latitude of natural origin",0,                     ANGLEUNIT["degree",0.0174532925199433],                     ID["EPSG",8801]],                 PARAMETER["Longitude of natural origin",-111,                     ANGLEUNIT["degree",0.0174532925199433],                     ID["EPSG",8802]],                 PARAMETER["Scale factor at natural origin",0.9996,                     SCALEUNIT["unity",1],                     ID["EPSG",8805]],                 PARAMETER["False easting",500000,                     LENGTHUNIT["metre",1],                     ID["EPSG",8806]],                 PARAMETER["False northing",0,                     LENGTHUNIT["metre",1],                     ID["EPSG",8807]]],             CS[Cartesian,2],                 AXIS["easting",east,                     ORDER[1],                     LENGTHUNIT["metre",1]],                 AXIS["northing",north,                     ORDER[2],                     LENGTHUNIT["metre",1]],             ID["EPSG",32612]]

Geographic Coordinates (Lat, Lon) - EPSG:4326
North-East (Lat, Lon): (40.560599674516666, -111.6551944985978)
South-West (Lat, Lon): (40.55133896648604, -111.66302319626604)

Projected Coordinates (X, Y) - EPSG:32612
North-East (X, Y): (444532.641, 4490187.549)
South-West (X, Y): (443862.141, 4489164.549)
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