Orinda-Moraga Trail

Orinda-Moraga Trail
Name	Orinda–Moraga Trail
Location	Contra Costa County, California, United States
Length	~7 miles
Use	Hiking, Biking, Horseback
Surface	Asphalt, gravel, dirt
Managed by	East Bay Regional Park District, City of Orinda, County of Contra Costa

Orinda-Moraga Trail The Orinda–Moraga Trail is a multi-use regional corridor in Contra Costa County, California that links the communities of Orinda and Moraga across the northern flank of the Diablo Range. The trail traverses urban edges, riparian corridors, and ridge-top grasslands, providing connections to regional networks such as the Iron Horse Regional Trail, Lafayette-Moraga Regional Trail, and the Contra Costa County bicycle infrastructure. It serves commuters, recreational users, and habitat linkages between East Bay parks and preserves including Briones, Sibley, and Las Trampas.

History

The corridor follows historic alignments used during the Mexican Rancho period and later 19th-century settlement patterns associated with the Rancho Laguna de los Palos Colorados and Rancho San Ramon. During the late 1800s and early 1900s, railroad and wagon routes shaped regional access linked to San Francisco Bay shipping and the growth of Oakland, California and San Francisco. The postwar suburban expansion of the 1950s and 1960s, involving planning by the Contra Costa County Board of Supervisors and the City of Orinda government, prompted acquisition and conversion efforts similar to projects led by the East Bay Regional Park District and advocacy groups like the Rails-to-Trails Conservancy. Community campaigns paralleled regional initiatives such as the creation of the East Bay Greenway and improvements funded through California measures including Proposition 1B (2006) and local redevelopment plans. Environmental review processes invoked statutes such as the California Environmental Quality Act and coordination with agencies like the California Department of Fish and Wildlife.

Route and Description

The route begins near transit nodes associated with Orinda BART station and links to arterial corridors such as Moraga Way and Moraga Road. It follows a mix of paved and unpaved segments, crossing tributaries to San Leandro Creek and connecting to greenways that reach San Pablo Reservoir and the East Bay Regional Park District trail system. Significant waypoints include crossings near Saint Mary's College of California and intersections with neighborhood streets in Moraga, California and Orinda, California. The corridor's topography includes lowland riparian sections, moderate ascents to ridgelines in the Diablo Range, and viewpoints toward Mount Diablo and the San Francisco Bay National Wildlife Refuge. Infrastructure elements comprise boardwalks, culverts, bridges, and trailheads with signage calibrated to standards used by the National Recreation and Park Association.

Access and Facilities

Trailheads provide parking, bicycle racks, bench seating, and informational kiosks maintained through collaborations among the City of Orinda, the Town of Moraga, and the Contra Costa County Public Works Department. Public transit connections include Bay Area Rapid Transit at Orinda and bus routes operated by County Connection (Lima Ortega Transit) and regional shuttles serving Saint Mary's College. Wayfinding signage references regional maps produced with support from the Association of Bay Area Governments and integrates accessibility features guided by the Americans with Disabilities Act of 1990. Nearby amenities and services are located in commercial districts such as Moraga Center and Orinda Theatre Square.

Ecology and Environment

The trail corridor traverses habitats characteristic of the northern California coastal prairie and California oak woodland, featuring species such as coast live oak, California bay laurel, and native bunchgrasses akin to those in East Bay Regional Park District preserves. Riparian zones along tributaries support steelhead and other native fish species monitored by the California Department of Fish and Wildlife and restoration projects coordinated with the U.S. Fish and Wildlife Service. Invasive plant management has targeted species comparable to Arundo donax and French broom through programs often modeled on efforts by the California Invasive Plant Council. Wildlife sightings include mammals and birds common to the region, with migratory patterns linked to conservation planning by entities like the California Department of Fish and Wildlife and the Audubon Society chapters in the Bay Area.

Recreation and Activities

Users engage in hiking, trail running, cycling, horseback riding, birdwatching, and commuter bicycling that integrates with broader regional networks such as the Iron Horse Trail and Lafayette-Moraga Regional Trail. Organized events occasionally leverage the corridor with permits coordinated via the East Bay Regional Park District and municipal parks departments; recreational programming parallels activities seen in nearby parks like Briones Regional Park and Las Trampas Regional Wilderness. Educational outings and volunteer stewardship days are often run in partnership with Friends of the Parks groups, local schools including Campolindo High School and community colleges such as Diablo Valley College.

Management and Conservation

Multiple jurisdictions share responsibility, including the City of Orinda, the Town of Moraga, Contra Costa County, and the East Bay Regional Park District, with coordination akin to regional plans developed by the Metropolitan Transportation Commission and the Association of Bay Area Governments. Conservation strategies emphasize habitat connectivity, stormwater management consistent with San Francisco Bay Regional Water Quality Control Board permits, and wildfire resilience aligned with guidance from the California Department of Forestry and Fire Protection. Funding mechanisms have combined municipal budgets, regional grants, and federal programs administered through agencies like the National Park Service and state grants from the California Natural Resources Agency.

Category:Trails in Contra Costa County, California