BLACKSTOCK RANCH
BLACKSTOCK RANCH
The Chipmunk Grazing Association grew out of the old ranching country of Owyhee County, Idaho, where private ranches, federal grazing allotments, water rights, and scattered homestead parcels were closely interwoven. The association was created to solve a practical ranching problem: local stockmen needed to keep enough connected range together to make cattle operations viable in a landscape divided among private land, public land, and older sheep-company holdings.
The deeper history begins with the Blackstock family. The first Adam Blackstock came from Scotland, worked in mining and sheep operations, and eventually established the Blackstock Ranch in the Squaw Creek and Opaline area in the early 1900s. He helped build the family ranching base in Owyhee County, but he was not the organizer of the Chipmunk Grazing Association. He died on January 14, 1955.
The Chipmunk Grazing Association story belongs mainly to Adam H. Blackstock, the second Adam. He was born December 15, 1908, and carried the Blackstock ranching tradition into the next generation. Adam H. was active in both ranching and public service. He served as an Owyhee County Commissioner from 1943 to 1948 and as an Idaho State Senator from 1949 to 1958. He was also involved with irrigation, cattlemen’s organizations, the county fair, and local grazing affairs.
The key moment came when John Archabell of the Jump Creek Sheep Company wanted to retire. Archabell had accumulated small homestead acreages scattered throughout the Owyhee range. These lands were intermingled with Blackstock private ground and with range used by neighboring ranchers. No single ranch family could easily afford to buy and protect the whole land base alone.
Adam H. Blackstock recognized that if those lands were lost, divided, or sold outside the ranching community, the surrounding cattle operations would be weakened. He went to the Farmers Home Administration, often referred to as FHA, to seek financing. He then approached neighboring ranchers about forming a grazing association. That effort became the Chipmunk Grazing Association.
The association allowed ranchers to pool resources. Members bought grazing shares and memberships, and those payments helped make the land payments. In simple terms, Chipmunk was a cooperative way for local ranchers to hold important intermingled range together and preserve a working grazing base.
Henry Brandau also belongs in the broader Chipmunk story. His ranch acquisitions, grazing interests, and land connections in the Owyhee country helped shape the larger range network that Chipmunk and neighboring ranchers depended on. Families such as the Brandaus, Blackstocks, Jacas, Stanfords, Mullers, and others were part of the same ranching landscape.
Over time, the Chipmunk Grazing Association became part of the legal and practical infrastructure of Owyhee County ranching. Public records connect the association to private land parcels, grazing interests, and water-right claims in the Owyhee Mountains and related drainage areas.
Idaho water-right records list multiple Chipmunk Grazing Association claims, many of which received partial decrees in the late 1990s. These records show that Chipmunk was not only a ranchers’ organization on paper. It held a real place in the management of water, land, and grazing use.
Leadership changed as the association moved through the late twentieth century. Names connected with Chipmunk leadership include Adam H. Blackstock, Lee Stanford, Ed Muller, and later members of the Jaca family. Modern business listings have identified Martin Jaca as a principal or president of the association.
By the 2000s and 2010s, the association remained connected to a substantial private land base surrounded by public grazing lands. Reports have described the Jacas and neighboring ranchers associated with Chipmunk as connected to roughly 31 sections of private land within the larger public-land grazing landscape.
In the modern era, Chipmunk’s story became tied to federal grazing policy, sage-grouse habitat, wildfire recovery, and Bureau of Land Management decisions. The association was involved in grazing-management disputes and appeals connected to the Owyhee Mountains.
A major event was the Soda Fire of 2015, which burned about 280,000 acres in southwest Idaho and affected many Owyhee grazing allotments. Chipmunk Grazing Association and other permittees were part of a 2016 Interior Board of Land Appeals case involving BLM grazing decisions for Group 2 allotments in the Owyhee Mountains.
The issue was whether the Soda Fire had changed range conditions so much that earlier BLM grazing decisions should be considered moot. The Board held that the fire did not make the decisions moot and that BLM still had authority to issue emergency fire-related grazing orders while the appeals continued.
Chipmunk also appears in conservation and habitat work. The association has been connected to sage-grouse planning and collaborative land-management efforts in Owyhee County. It has also appeared in USDA Emergency Conservation Program records.
One recent conservation chapter is the Richards Chipmunk Grazing Association Project at Chipmunk Meadow, described in 2023 by U.S. Fish and Wildlife Service partners. The project focused on restoring mesic, or wet meadow, habitat in the Succor Creek area. This work reflects the long relationship between ranching, water, meadow systems, livestock forage, and wildlife habitat in the Owyhee uplands.
The legacy of the Chipmunk Grazing Association is the preservation of a working ranching land base in a difficult and divided landscape. It was formed because Owyhee ranchers needed to keep scattered, intermingled range together. Adam H. Blackstock, the second Adam, was central to that effort after the Archabell and Jump Creek Sheep Company lands became available.
Through grazing shares, memberships, financing, and cooperation among neighboring ranchers, the association helped protect access to land that was essential to local livestock operations. Over time, Chipmunk became part of the water-right, public-land, wildfire, grazing, and conservation history of Owyhee County.
In short, the Chipmunk Grazing Association is a story about ranch families adapting to the realities of Owyhee County: scattered land, scarce water, public-land regulation, wildfire, wildlife habitat, and the need to work together to keep ranching possible.