The research studies the spread of common reed, Phragmites australis using remote sensing techniques at the Bear River Migratory Bird Refuge wetlands. These wetlands are the largest freshwater component of the Great Salt Lake ecosystem. Phragmites, an invasive species, is out-competing more beneficial native plants and damaging migratory bird habitat. In May 2010, airborne multispectral imagery of the Refuge was acquired with the USU airborne multispectral digital system to produce maps of the current vegetation cover in the Refuge. The resulting product is a classified image of the Refuge, which allowed calculating the area of the different vegetation (native and invasive) species and water surfaces in the management units. We compare the 2010 classified imagery to airborne imagery obtained in 1992 to study the spread of Phragmites over time and identify the native species that have been replaced.