- Purple martins have been observed in the vicinity of Willamette Park.
- There are 1,378 feet of open stream channels in this subwatershed.
- Thirty nine acres of the subwatershed are parks and open space, 46 acres are in public ownership.
- About half of this subwatershed is impervious area, mostly streets.
- Willamette Park provides stop-over habitat for osprey, hawks, herons, and neo-tropical migratory birds.
- Forty one acres of the subwatershed are forested.
- Thirty nine acres of the subwatershed have woodland type tree canopy.
- One perennial creek and several seasonal creeks originate in George Himes Park near Terwilliger Parkway and flow to a combined sanitary and stormwater pipe near Interstate 5.
- The forested areas and streams of the subwatershed provide an important link between the West Hills and the Ross Island-Oaks Bottom ecosystem complex to the east, and between Marquam Nature Park to the north and Tryon Creek State Natural Area to the south.
1120 SW 5th Avenue, Suite 1000, Portland, OR 97204