Gibson Dam, Montana

I-90 Bridge
Canyon Ferry Cabin Sites
Going-to-the-Sun Road
Gibson Dam
DeBaugan Fuels Cadastral

Cascade Lake


Gibson Dam Survey
Client:  US Bureau of Reclamation - Great Plains Region     
Where:   Gibson Dam, Montana

Project Scope
The Bureau of Reclamation required detailed planimetric and topographic data of the foundation abutments of the dam with topography at a 2' contour interval.

Tasks performed by DJ&A:

  • Horizontal and Vertical control surveys using GPS and differential leveling
  • Tied existing local control marks
  • Established new control marks
  • High Definition Laser Scanner Survey over the entire dam (+/- 900' dam crest) facility and adjacent right and left abutment upland areas (+/- 10 acres)
  • Processed over 30 million laser scanner points (northing, easting, elevation)
  • Generated 100 scale and 60 scale planimetric and site mapping with two topographic contour mapping
  • Produced 3D structure modeling and facility animations


Project Photos
Scanning Gibson Dam Scanning Gibson Dam Laser Scan Image from Gibson Dam
  DJ&A, P.C. 
3203 Russell Street / Missoula, MT, 59801
P: 406/721-4320  F: 406/549-6371
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DJ&A, P.C.