[2][3][4] Chileno Valley Ranch was purchased by Carlo Martinoiya, an immigrant from Cevio, Switzerland from Henry Halleck in 1862.

Carlo Martinoiya anglicized his name to Charles Martin and his great-great-granddaughter Sally Gale and her husband now run one of the ranches in the Chileno Valley.

[9] In the early 1900s, coho salmon (Oncorhynchus kisutch) were abundant in Walker Creek, but were nearly extirpated apparently due to severe erosion and siltation secondary to overgrazing and logging operations.

He found small numbers of steelhead young-of-the-year in all viable habitat areas in the watershed, but only eight coho near the confluence of Chileno and Walker Creek.

[13] Laguna Lake is used extensively by migrating and breeding waterfowl, including whistling swans (Cygnus columbianus) in winter.