The Pathfinder to Guernsey subbasin is the second largest of the seven Platte River Basin subbasins that are located in Wyoming. The total area of this subbasin is approximately 5,600 square miles. Most of the subbasin is located within Natrona, Converse, and Platte Counties. The main stem of the North Platte River flows through this subbasin. Communities located within this subbasin include Casper, Glenrock, Douglas, and Guernsey. Alcova Reservoir, Glendo Reservoir, and Guernsey Reservoir are major North Platte River federal reservoirs that are located within this subbasin.

Additional information and maps of the Pathfinder to Guernsey subbasin can be accessed by using the menu displayed on the left or the navigational menu displayed on the top of this page.