The H.J. Andrews Experimental Forest (map) Program is dedicated to long-term study of complex forest and stream ecosystems of the Pacific Northwest, development of innovative and collaborative approaches to management of forests and watersheds, and communication of findings to land managers, researchers, policymakers, teachers, students, and the public.

The 16,000 acre Andrews Forest is home to magnificent old-growth Douglas-fir/western hemlock forests, young Douglas-fir forests, and rushing mountain streams. Established in 1948, the Andrews Forest is administered cooperatively by the US Forest Service Pacific Northwest Research Station, OSU, and the Willamette National Forest.