The Pacific Northwest brings abundant rainfall to the Gifford Pinchot National Forest, feeding an extensive network of rivers. The forest has only one river currently designated as Wild and Scenic, the White Salmon River, fed from glaciers high on Mount Adams. The Gifford Pinchot National Forest recommends four rivers to be added to the Wild and Scenic System. They are the Lewis River, the Cispus River, the Clear Fork and the Muddy Fork of the Cowlitz River. There are an additional thirteen rivers in the forest being studied for consideration into the national Wild and Scenic River System.