BRBNA Regional Maps

In 1999, the Blue Ridge-Berryessa Partnership began development of an environmental database to help identify and evaluate lands and resources in the region for conservation and stewardship opportunities. With this data, maps have been created to highlight the region’s unique features and resources. Below is an archive of our regional maps.

Immediately below are two zoom-able maps of the Berryessa regions. Following the zoom-able maps are additional maps that can be viewed full-size.

BRBNA Regional Map
Discover BRBNA

BRBNA Biodiversity Maps

The maps illustrated below are a product of the Blue Ridge-Berryessa Natural Area (BRBNA) Conservation Framework. In order to provide a scientific foundation for its planning and stewardship initiatives, the Partnership developed a “framework” to guide conservation of the BRBNA’s biodiversity, working ranches, and nature-based recreation. This Conservation Framework, includes an analysis of the resources within the BRBNA, tools for identifying conservation priorities, and strategies and opportunities for interested parties to participate in conservation activities. Using these data, Universal Model Builder (UMB) combined many layers of information related to each of the three conservation elements – biodiversity, working ranches and recreation – to identify conservation priorities.
Users can weigh different conservation values based upon the relative importance of those values to the user. UMB promotes informed decisions about conservation projects, enables the Partnership to support proactive regional conservation, and allows partners to prioritize their efforts and get the most conservation value for their dollar. Clear priorities backed up by solid data provide momentum and leverage for activities on the ground.

Click on the images to open and download a full-size PDF map.

Preserving Biodiversity

This map illustrates key biodiversity conservation areas in dark red. These areas include from north to south: Walker Ridge, Wilson Valley, McLaughlin Reserve, Knoxville Recreation Area, Knoxville Wildlife Area and Cedar Roughs. Some of these areas are already in public ownership or have been permanently protected as part of the UC Natural Reserve System or by land trusts.

Biodiversity Priorities Map

Enhancing Recreation

Regional recreation experts developed the trails and recreation data and priorities during a May 2004 workshop. Participants identified existing and potential recreation destinations (natural, scenic, cultural, and historic), trailheads or access points, camping areas, and connections. This map indicates key recreation priorities in the darkest red. Additional recreation priorities include public lands that are not open for public recreation such as Berryessa Peak, BLM lands with constrained access, and Lake Curry. As some of these lands border existing recreation areas, they present potential priority areas for building recreational connectivity within the BRBNA.

Recreation Priorities Map

Sustaining Working Ranches

The working ranch suitability analysis was prepared specifically for cattle grazing. This map illustrates in dark red those areas of the BRBNA that are most suitable for ranching. Some of these areas are currently in ranching operations while others may not be. Areas in the BRBNA most suitable for ranching are, from north to south: Bear Valley, Cortina Ridge, the eastern slope of the Blue Ridge in Yolo County, and the east side of Lake Berryessa.

Working Ranch Priorities Map

Other BRBNA Maps

The maps below were created to help identify key biodiversity conservation areas.

Click on the images to open and download a full-size PDF map.

Vertebrate Species Habitat

Vertebrate Species Habitat Suitability Map

Priority Vegetation

Priority Vegetation Map

Rare Species Occurrence

Rare Species Occurrence Map