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| Capay Hills | |
|---|---|
| Name | Capay Hills |
| Country | United States |
| State | California |
| Region | Yolo County |
| Range | Northern Inner Coast Ranges |
Capay Hills The Capay Hills are a low mountain range in northeastern Yolo County, California, forming part of the western foothills of the Pacific Coast Ranges and the Northern Inner California Coast Ranges. The hills lie near the Capay Valley and are situated within the watershed of the Putah Creek and the Sacramento River systems, adjacent to the Capay Valley AVA and north of the Diablo Range. The area is notable for its connections to regional California Department of Fish and Wildlife, United States Forest Service policy, and local Yolo County, California land-use planning.
The Capay Hills sit between the Capay Valley to the west and the Sacramento Valley to the east, bounded by Putah Creek and the Cache Creek watershed and intersected by county roads linking Guinda, California, Esparto, California, and Woodland, California. The topography features low ridgelines that transition into the Inner Coast Ranges (California) and the Central Valley (California), with elevations lower than the Mayacamas Mountains and the Vaca Mountains. Climate influences derive from proximity to the Pacific Ocean and inland temperature gradients that also affect California State Route 16 travel and regional Caltrans infrastructure planning.
Geologic formations in the Capay Hills reflect the tectonic history of the San Andreas Fault system and the broader Coast Ranges (California), with bedrock related to the Franciscan Complex, marine sedimentary rocks, and uplift episodes linked to the Pacific Plate and the North American Plate. Soils derive from weathering of shale, sandstone, and serpentine outcrops similar to those mapped in the Mendocino County, California and Sonoma County, California foothills, influencing erosion patterns studied by researchers at the University of California, Berkeley and the United States Geological Survey. Paleontological and stratigraphic work in nearby ranges has produced comparisons with findings from the Great Valley Sequence and the Sierra Nevada (United States), informing models of Late Cenozoic uplift and depositional environments.
Vegetation communities include mixed annual grassland, California oak woodland dominated by Quercus agrifolia and Quercus lobata, and patches of chaparral resembling assemblages in the California chaparral and woodlands ecoregion; floristic surveys connect species occurrences to inventories maintained by the California Natural Diversity Database and the Jepson Herbarium at the University of California, Berkeley. Wildlife documented in the hills overlaps with species lists from the Yolo Bypass Wildlife Area and the Putah Creek Wildlife Area, including populations of Odocoileus hemionus (mule deer), Lynx rufus (bobcat), Ursus americanus (black bear) reported regionally, and avifauna monitored by the National Audubon Society and the Yolo Basin Foundation. Sensitive habitats occur on serpentine soils that support rare plants tracked under the California Endangered Species Act and by researchers at the California Native Plant Society.
Indigenous occupation of the Capay Hills and surrounding valleys involved peoples associated with the Patwin and broader Wintun cultural groups, whose village sites and resource-use patterns are studied by archaeologists at the California State University, Sacramento and curated in collections at the California State University, Chico and the California State Parks system. Spanish and Mexican-era influences arrived via expeditions linked to Gaspar de Portolá and land tenure systems such as the Rancho grants that shaped settlement patterns seen in neighboring Rancho Capay histories and archives at the California Historical Society. Gold Rush-era and 19th-century agricultural expansion connected the hills to transportation routes used by the Central Pacific Railroad and to agricultural developments promoted by University of California Agriculture and Natural Resources cooperatives.
Present land use includes private ranching, grazing leases, and viticulture in the nearby Capay Valley AVA with agritourism tied to operators listed in Yolo County, California business registries; recreational activities include hiking, birdwatching, and seasonal hunting guided by California Department of Fish and Wildlife regulations and popularized through trail guides from the Sierra Club and local chapters of the Boy Scouts of America. Public access intersects with working landscapes managed consistent with Yolo County, California general plans and conservation easements held by organizations such as the The Nature Conservancy and local land trusts, and trails connect to regional networks mapped by the Bureau of Land Management and county parks departments.
Conservation initiatives involve coordination among the Yolo County Board of Supervisors, the California Department of Fish and Wildlife, and nonprofit groups such as the California Rangeland Trust and the The Nature Conservancy to protect riparian corridors along Putah Creek and serpentine habitats listed in inventories by the California Natural Diversity Database. Fire management and restoration efforts draw on research from the University of California, Davis, prescribed-burn guidelines from the California Department of Forestry and Fire Protection (CAL FIRE), and habitat connectivity planning informed by the California Wildlife Conservation Board. Land stewardship balances agricultural production with biodiversity goals through conservation easements, habitat mitigation agreements under California Environmental Quality Act review, and collaborative watershed-scale planning with stakeholders including regional water agencies like the Solano County Water Agency and local irrigation districts.
Category:Landforms of Yolo County, California Category:California Coast Ranges