2023 Map of Elochoman Pass

About this map

The Chehalis River and its numerous tributaries dominate this high-elevation landscape where Pacific, Lewis, and Wahkiakum counties meet. This 2023 survey highlights a complex network of headwaters, including the East Fork Chehalis River and the West Fork Chehalis River, which drain the timbered heights of the Willapa Hills. The central landmark, Elochoman Pass, serves as a critical geographic divide between the Chehalis watershed and the drainages that flow south toward the Columbia. Notable for its lack of established settlements, the area is defined by industrial forestry infrastructure like the 500 Rd and named topographical features such as Long Ridge and Huckleberry Ridge. For those tracking the hydrology of Southwest Washington, the map provides precise locations for the sources of the East Fork Grays River and North Fork Elochoman River.