The area south of the historic core campus and the entries into Princeton and the campus from the south once were characterized by natural woodlands that extended along tributaries draining into Carnegie Lake (originally the confluence of Stony Brook and the Millstone River). Restoration is strengthening the health of the woodlands and enhancing their presence on campus and in the stream valleys. As they mature, woodlands will become self-sustaining and link the campus to the larger natural habitat along the lake.
Existing woodlands south and west of the Frick Chemistry Laboratory have been strengthened by removing invasive species and planting new trees and shrubs. Between Washington Road and the Frick Chemistry Laboratory, the Washington Road stream has been restored. New plantings at the Streicker Bridge abutments and the approach walks are ensuring that woodlands will continue north, and plantings along both sides of the road are helping re-establish the woodlands that once filled this stream valley.
Another tributary also follows Elm Drive, the main campus entrance drive, and the woodlands there have been restored and supplemented. Both sides of Elm Drive have been replanted, linking to woodlands to the south and joining new woodlands to the north that wrap the south and west sides of Whitman College.