Browse Map

Explore away

Explore Map Collection

Check out our basemaps

Print a Map Plus

Generate a high-quality PDF

Field Guide

Discover local flora, fauna, geology, and more

Local Flora & Fauna

Learn the ecology of your area

Local Geology

Learn the geologic formation at your feet

Get Started or Sign In

Welcome

Continue with Apple

Already have an account? Sign In

MAP

Topo

Measure

Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Okanogan Highland Dry Forest

Ecoregion in WA

Print Map

Generate High-Quality PDF

The Okanogan Highland Dry Forest ecoregion covers the mid-elevation Okanogan Highlands between the Okanogan River Valley and the Columbia River Valley. It lies at lower elevations than the High Northern Rockies (15h) and at higher elevations than the Okanogan-Colville Xeric Valleys and Foothills (15r) and Western Okanagon Semiarid Foothills (15g). Mountains and hills in The Okanogan Highland Dry Forest ecoregion have broad rounded profiles caused by the scouring action of continental ice flows during the Pleistocene. Bedrock often lies close to the surface, which controls topographic expression and vegetation patterns. Loess and volcanic ash deposits are widespread. Soils have a xeric moisture regime. The Okanogan Highland Dry Forest ecoregion lies in the rain shadow of the Cascade Mountains; dry conditions result in a forest low in species diversity with Douglas-fir and subalpine fir dominating. Land uses include woodland grazing and timber production.

— EPA

Taxonomy

Classified As

Ecoregion