High Quality Content by WIKIPEDIA articles! Ranier National Forest was established in Washington on March 2, 1907 when its name was changed from Mount Rainier Forest Reserve. On October 13, 1933 Rainer was divided between Columbia, Snoqualmie and Wenatchee National Forests. Its lands exists presently as portions of Mount Baker-Snoqualmie, Wenatchee and Gifford Pinchot National Forests.