xii, 60 p. : ill. (some col.) / Exurban growth is prevalent in watersheds nationwide and of special concern in areas important for their undeveloped qualities. The McKenzie River, Oregon, is a natural amenity of great public, aesthetic and recreational value and provides drinking water for much of the southern Willamette Valley. These qualities also make the basin an attractive place to live, and their preservation is often in conflict with the rights and gains of private landowners. However, current containment strategies of development can be arbitrary from a hydrological perspective, especially when adapted from urban contexts. This study introduces a spatially-explicit and physically-based approach for identifying hydrologically sensitive lands in periurban watersheds and then applies that model as a framework for assessing current risk to municipal drinking water sources from exurban residential development. / Committee in charge: Robert Parker, Chair; David Hulse, Member; Scott Bridgham, Member