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Rim of the Valley Corridor
Special Resource Study

Final Rim of the Valley Corridor Special Resource Study Transmitted to Congress

The National Park Service is pleased to announce the completion of the Rim of the Valley Corridor Special Resource Study. The Secretary of the Interior transmitted the final study to Congress on February 16, 2016.

The final study recommends a 170,000-acre addition to Santa Monica Mountains National Recreation Area.The selected alternative would add portions of the Los Angeles River and Arroyo Seco corridors, the Verdugo Mountains-San Rafael Hills, the San Gabriel Mountains foothills, the Simi Hills, the Santa Susana Mountains, and the Conejo Mountain area to the national recreation area. Within the expanded area are: habitat types that contribute to the high biodiversity of the Santa Monica Mountains; functioning wildlife corridors; highly scenic landscapes; historic and archeological sites; geologic and paleontological resources; thousands of acres of open space and recreation areas; and miles of trails, all of which provide exceptional public enjoyment opportunities. Expanding Santa Monica Mountains National Recreation Area would provide new recreational opportunities for one of the most densely populated areas in the United States.

Please click here to see the press release. Graphics are available for media. Please e-mail pwr_rimofthevalley@nps.gov to request media graphics. Final study documents are provided below.

Download Final Study Documents

We have also updated our "frequently asked questions" page to answer questions about the final study recommendations.

Hikers crossing Flint Wash Bridge in Pasadena

As directed by Congress through the Consolidated Natural Resources Act of 2008 (P.L. 110-229-May 2008) , the National Park Service (NPS) completed a “special resource study” of the area known as the Rim of the Valley Corridor, generally including the mountains encircling the San Fernando, La Crescenta, Santa Clarita, Simi, and Conejo Valleys in California.


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updated 2/16/16

updated 2/16/16