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Tanaha Corridor highlighted as 'Reserve of the Month'; staff outlines habitat and acquisition work

RCA Board of Directors · December 1, 2025
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Summary

Senior Management Analyst Carol Thompson presented the Tanaha Corridor 'Reserve of the Month,' describing roughly 860 acres across 43 properties in the Southern Santa Ana Mountains that connect key conservation areas and support MSHCP-covered species; staff noted funding sources include MSHCP, mitigation fees, federal Section 6 grants and Nature Conservancy contributions.

Carol Thompson, senior management analyst for the RCA, presented the Tanaha Corridor as the authority's 'Reserve of the Month,' describing it as "an assemblage of reserved lands" and "a habitat linkage located in the Southern Santa Ana Mountains in unincorporated Riverside County." She said the corridor spans more than three miles, comprises roughly 860 acres across 43 properties, and fills connectivity gaps between nearby conserved lands.

Thompson identified species documented in the corridor including Engelmann oak, grasshopper sparrow, bobcat and the coast range newt, and noted that the corridor supports movement for wide-ranging species such as mountain lion. She told the board that acquisitions have been funded through a mix of MSHCP resources, local development mitigation fees, federal Section 6 grants, donations and contributions from The Nature Conservancy.

Board members asked about the provenance of species names and requested that staff add historical or naming context to future presentations; staff agreed to include that information in subsequent materials.

Next steps: staff will continue parcel acquisitions and grant applications to strengthen the corridor’s conservation value and will incorporate the naming/background information requested by the board into future presentations.