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Western Air Maps (WAM) combined high-definition terrestrial LiDAR surveying and aerial
photogrammetry to provide the USACE-Kansas City District with accurate topographic mapping
of the Eagle Bluffs wetlands area near the town of McBaine in Boone County, Missouri.
USACE-Kansas City District required accuracy consistent with ASPRS Class I standards for a 0.5'
foot contour interval.
LiDAR was the primary method of measuring the elevations of the terrain surface. WAM used a
land-based Optech ILRIS tripod unit to conduct overlapping LiDAR scans of the target area.
A raw point cloud, generated by the LiDAR scans, was processed to produce a 'bald earth'
surface model.
Aerial photogrammetry was used to locate all manmade features; roads, levees, power poles,
fences, buildings, and other manmade features.
The 'bald earth' surface data was then combined with the aerial photogrammetry to
produce the final project Digital Terrain Model.
Western Air Maps provided USACE-Kansas City with one set of three-dimensional topographic
and planimetric vector data in MicroStation file format, compliant with the A/E/C CADD
Standard; one digital terrain model electronic file (DTM format); a Surveyor's report;
and an Aerial Photography Mission Report.
