Region 3 Designation

After careful evaluation of public comments, the Marin County Open Space District approved the Region 3 proposed conditional designation maps in late fall 2016.

The Region 3 Designation Map shows designated roads and trails for Region 3: Ignacio Valley, Indian Valley, Loma Verde, Lucas Valley, and Pacheco Valle Preserves.

The Region 3 Use Map shows designated use for hikers, cyclists, and equestrians on roads and trails in Region 3 preserves.

Region 3 is located in the middle of Marin County, west of the Ignacio and Marinwood communities. This region consists of five preserves totaling 3,537 acres. It includes the Lucas Valley, Indian Valley, Ignacio Valley, Pacheco Valle, and Loma Verde Preserves. Lucas Valley is the largest preserve in this region (1,271 acres), followed by Ignacio Valley (991 acres), Indian Valley (558 acres) and Loma Verde (320 acres). Region 3 contains approximately 30 miles of roads and trails.

This region is surrounded by varying land uses, including large private ranches to the west of the region, and between the Lucas Valley and Indian Valley Preserves. Lands managed by the Marinwood Community Service District are located to the east of the Lucas Valley Preserve and to the south of the Ignacio Valley and Pacheco Valle Preserves. Indian Valley College is located to the northeast of the Indian Valley Preserve. Residences are located to the north of the Ignacio Valley, Pacheco Valle, and Loma Verde Preserves, and to the south of the Lucas Valley Preserve.

This project was funded by Parks Measure A.

Proposed road and trail project list:

• Public Proposals List pdf

The public may participate in identifying potential road and trail projects. New project proposals must be submitted on this form:

• Road and Trail Management Plan Project Proposal Form pdf

Individuals, organizations, trail user groups, and others interested in submitting a proposal should read the Road and Trail Management Plan (RTMP):

• Road and Trail Management Plan pdf

Road and trail projects proposed by the public are screened and evaluated based on these primary objectives of the RTMP:

• Reduct the environmental impacts associated with the road and trail network.
• Enhance visitor experience and safety for all users.
• Establish and maintain a sustainable system of roads and trails.

Decision making is conducted in a transparent and collaborative manner, subject to the laws, policies, and goals outlined in the RTMP. RTMP chapter 5 describes the decision-making process the MCOSD uses to determine designation, management, and maintenance of the road and trail system.

In general, Parks staff review all public proposals for completeness. When a proposal is complete it then becomes part of the annual progressive screening and evaluation of all road and trail projects. The highest priority road and trail projects that emerge must then complete for approval and funding in the MCOSD and Measure A budget development processes for the coming fiscal year.