Nature Reserves

Oaks Bottom Wildlife Refuge Map

Location: 45.478267, -122.6559391 Oaks Bottom Wildlife Refuge is Portland’s first official wildlife refuge and a critical wetland ecosystem located along the east bank of the Willamette River. It features a mosaic of habitats -marshes,...

Lower Powell Butte Floodplain Map

Location: 45.4815867, -122.5005247 Lower Powell Butte Floodplain is a natural area situated near the base of Powell Butte Nature Park. This zone includes wetlands, meadows, and seasonal streams, providing vital flood control and wildlife...

Big Four Corners Natural Area Map

Location: 45.5534989, -122.485806 Big Four Corners is one of the largest undeveloped tracts of wetland and riparian habitat in the city. Located in Northeast Portland, the area is important for flood mitigation and supports...

Columbia Slough Natural Area Map

Location: 45.5572723, -122.5104545 The Columbia Slough Natural Area is part of a vital waterway system that runs parallel to the Columbia River in North and Northeast Portland. This network of wetlands, channels, and floodplains...

Ridgeveiw Open Space Map

Location: 45.5367648, -122.7610294 Tags: – leisure: nature_reserve – name: Ridgeveiw Open Space – operator: Ridgeview HOA – type: multipolygon

Government Island State Recreation Area Map

Location: 45.5795883, -122.5141035 Government Island is a 1,760-acre island in the Columbia River accessible only by boat. It features shoreline campsites, walking paths, and wildlife observation areas. While relatively undeveloped, it’s popular among kayakers...

Blue Pointe Open Space Map

Location: 45.532146, -122.7582786 Tags: – leisure: nature_reserve – name: Blue Pointe Open Space – operator: Blue Pointe HOA – type: multipolygon

Forest Park Map

Location: 45.5822964, -122.7796758 Forest Park is a crown jewel of Portland’s natural reserves and one of the largest urban forests in the United States, spanning over 5,200 acres. The park boasts more than 80...

Alder Ridge Open Space Map

Location: 45.5517467, -122.7795422 Alder Ridge Open Space is a quiet natural enclave nestled in the hills of northwest Portland. Known for its stands of alder and fir trees, this open space offers simple walking...

Forest Heights Open Space Map

Location: 45.5410148, -122.7730112 Forest Heights Open Space is a network of green corridors and wooded trails within the Forest Heights residential area. While modest in size compared to larger reserves, it provides essential wildlife...