Rancho Arroyo Seco was a 16,523-acre (66.87 km2) Mexican land grant in the Salinas Valley, in present-day Monterey County, California.
[1] The grant extended along the west bank of the Salinas River at Arroyo Seco Creek, and encompassed present-day Greenfield.
[4] In 1845, Joaquin de la Torre and a detachment of fifty-six armed and mounted volunteers, was sent by Alvarado to capture Los Angeles.
With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.
[12] John S. Clark founded the California Home Extension Association which in 1902, purchased of 4,000 acres (16 km2) of Rancho Arroyo Seco.