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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Development Patterns

Most of this subwatershed consists of residential neighborhoods originally developed in the 1950s and 1960s. Through the late 1800s the area was forested with a few small farms scattered about. Construction of the interurban rail system in the early 1900s spurred development, and some neighborhood subdivisions date back nearly 100 years. More significant growth occurred during the post World War II housing boom and continued through the 1970s.

Commercial development is concentrated along Barbur Boulevard, and a shopping center was built on fill that buried Stephens Creek near the intersection of Bertha and Barbur Boulevards. Portions of Riverview Cemetary occupy part of the subwatershed and account for a significant area of open space.

The construction of Interstate 5 in the early 1960s added a large impervious area and effectively split the subwatershed into two sections. While development had been constrained in the area south of Interstate 5 because of steep slopes and unstable soils, demand for housing has resulted in new construction that may increase the potential for erosion.

1850 - 1945 451.0
1946 - 1965 741.0
1966 - 1985 231.0
1986 - 2003 135.0
No Data 339.0
Maps & Files

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