Located in the borders of Washington and Oregon states in the United States is the Umatilla National Forest. It covers a total land area of 1.4 million acres, three quarters of which are inside the state of Oregon.

Formerly the Heppner National Forest combined with some parts of the Blue Mountains National Forest, the Umatilla National Forest was established in 1908. It was expanded later on by adding the Wenaha National Forest in 1920. The site is quite historic with its relationship with the Lewis and Clark Expedition, as well as for having some areas mined in the mid 1800s which led to the formation of the North Fork John Day River settlement.

The Umatilla National Forest is best known for having a wide array of wildlife and having a number of recreational activities available to its visitors.