CONTINENTAL MAPPING Mapping from Earth, Sky and Spacewww.continentalmapping.com

Madison, WisconsinIndianapolis, IndianaKansas City, Kansas

St. Louis, Missouri

The Tualatin River National Wildlife Refuge is an urban paradise. There are only a few set asides in North America that are both in highly devel-oped areas and devoted to maintaining and managing resources and species. Since its establishment in 1992, the staff has worked diligently to rehab the land back to a natural state. To aide this continuing effort, Continental Mapping was commissioned to provide high accuracy mapping. The project was in support of ongoing inventory and monitor-ing activities, refuge management, landscape design, hydrogeomor-phological assessments and planned vegetation mapping efforts.

The Fish and Wildlife Service contracted with Continental Mapping to acquire lidar and imagery of a 10-square-mile area around the

Wapato Lake Unit and deliver a bare earth surface, a hydro-condi-tioned DEM, a vegetation canopy DEM and orthophotos.

As part of the processing, Continental Mapping completed hydro-enforcement, hydro-conditioning and hydro-flattening, and developed a vegetation canopy height model by extracting first return data from the point cloud.

LOCATION: Tualatin National Wildlife Refuge, OregonYEAR COMPLETED: 2012OBJECTIVE: Provide high accuracy mapping to support refuge projects

KEY POINTS: • New airborne imagery and lidar • Hybrid photogrammetric and lidar terrain model • Fast-track production schedule expediting 3D data to design team • Supported inventory management, as well provided hydrologic details in the form of a Digital Elevation Model

US Fish & Wildlife Lidar & Photogrammetry