The Tuolumne River Preservation Trust

The Tuolumne River Preservation Trust, operating as Yosemite Rivers Alliance, is a California-based tax-exempt nonprofit organization that receives federal grant funding as a sub-recipient for river habitat restoration and environmental analysis work. The organization operates exclusively as a sub-recipient on federal grants; it holds no prime federal contracts or IDVs and does not serve as a prime grant recipient.

Yosemite Rivers Alliance's federal footprint centers on environmental restoration and scientific analysis for threatened salmon and steelhead populations in the lower Tuolumne River. Recent work includes three related sub-awards from the California Department of Fish and Wildlife (all dated April 21, 2026) to produce design plans and environmental analysis for geomorphic, hydrologic, and biologic habitat improvement benefiting fall-run Central Valley chinook salmon, Central Valley steelhead, and resident rainbow trout, alongside habitat assessment for northwestern pond turtle and Swainson's hawk. The organization also received a sub-award from the National Forest Foundation (October 1, 2025) to engage community volunteers in meadow restoration, including backlogged project completion and maintenance support.

Customer concentration is distributed across three distinct federal agencies: the National Oceanic and Atmospheric Administration (3 awards), the Environmental Protection Agency (2 awards), and the Department of Agriculture Forest Service Washington Office Acquisitions (1 award), accounting for 100% of the source-visible award portfolio. The combined obligated dollars across all six awards totals $374 thousand. Activity in the source data spans nearly two decades with sparse awards — one in 2007, one in 2015, then dormant until a single 2025 award, followed by three awards in 2026. The organization operates as a 67% sub-recipient profile with no prime role, positioning it as a specialized environmental services partner to state resource agencies and the National Forest Foundation rather than a direct federal contractor or prime grantee.