Orthoimagery and Topographic Mapping, Wyoming
Tetra Tech collected 4-band digital orthoimagery and Light Detection and Ranging (LiDAR) data, and created derived topographic products for the City of Cheyenne and Laramie County, Wyoming. The data will benefit the Cheyenne and Laramie County Cooperative (CLC) Geographic Information System (GIS) Program and augment the GIS needs of various city and county departments.
What a pleasure it was working with the Tetra Tech team. Your professionalism and attention to detail created a great working environment. The products were excellent and exceeded our expectations. I would definitely consider working with Tetra Tech on future projects.Joyce Gilligan, GIS Program Coordinator, Cheyenne and Laramie County
Our team acquired and processed 6-inch resolution, 4-band imagery for 547 square miles, and 1-foot resolution, 4-band imagery for 2,686 square miles. High-resolution airborne LiDAR was acquired for 307 square miles at 0.7 nominal point spacing (NPS). Tetra Tech created derived products of hydroflattened and hydroenforced breaklines, 1-foot contours, a bare earth digital terrain model, and feature-extracted datasets.
Tetra Tech provided classified LiDAR data that included classes for ground, low, medium, and high vegetation; buildings; water; and roads.
In addition to benefitting CLC GIS Program members, the project was also a priority for the National Geospatial-Intelligence Agency and the National Spatial Data Infrastructure and supported the U.S. Geological Survey’s efforts related to The National Map and National Elevation Dataset programs.