Irrigation Reservoirs - Green River Basin (2001)

This data set is a polygon coverage. It only contains those reservoirs for which active irrigation is shown in the Green River Irrigated Lands Coverage of 2000. This entails all lands in the vicinity of Rock Springs and Baggs, Wyoming in the Green River Basin. The information was collected by Frank Carr of Water Rights Services, Inc. from the permit applications on file with the Wyoming State Engineer's Office. The data structure for this data set is based on graph theory, in which a two-dimensional diagram is expressed as a set of spatial objects in a manner that explicitly expresses logical relationships. Applied to a map, this concept is used to encode the spatial relationships between the objects, including such concepts as adjacency and connectivity between objects. A topologically structured data file can support graphic applications, as well as computations and analyses involving the spatial objects and their spatial relationships.