California · Nonprofit
REDWOOD TRAILS ALLIANCE
REDWOOD TRAILS ALLIANCE (California) receives grants from 9 organizations whose IRS filings report $129,963 to it, the largest being GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC ($30,000). 3 of them have funded it in more than one year.
- Revenue FY2025
- $522k
- Funders on record
- 9
- Grants received
- $130k
- Net assets
- $93k
What Redwood Trails Alliance does
Mission
The Redwood Trails Alliance is an advocate for our diverse community of trail users. We teach responsible trail stewardship and offer volunteer trail work opportunities along with planning and construction services for trails for all to enjoy.
As stated on its FY2025 Form 990.
Programs
Construction project: our construction efforts also focused on enhancing the user experience and long-term durability of existing trail systems. At monte rio redwoods, the organization executed system-wide enhancements, including the installation of professional wayfinding and navigation signage to improve visitor safety and accessibility. These projects represent our commitment to not only building trails but ensuring they are managed as high-quality, navigable recreational assets for the diverse communities they serve. To combat environmental degradation and ensure climate resiliency, the organization performed high-level technical masonry and hydrologic work across several sonoma county regional parks. We implemented drainage lens installations and extensive rock armoring at helen putnam, shiloh ranch, hood mountain, and taylor mountain. These specialized engineering techniques stabilize trail treads against heavy seasonal runoff, preventing sedimentation in local watersheds.
$188,093 spent$349,838 earned by the program44% of program spendingGeneral programs: our primary program focuses on the vital maintenance, restoration, and preservation of public parks and multi-use trail systems throughout northern california. This year, the organization successfully coordinated 44 comprehensive volunteer service days, mobilizing community members to perform essential labor and public outreach. By partnering with local, regional, and state park systems, we ensured that thousands of acres of open space remained accessible, safe, and ecologically resilient for the general public. The core of our impact was driven by intensive "work days" focused on technical trail repair and environmental conservation. Significant efforts were concentrated at trione-annadel state park (15 work days) and helen putnam regional park (7 work days), where volunteers performed erosion control, brush clearing, and tread repair. Our stewardship extended to a diverse array of locations, including taylor mountain, moore creek park, lawson peak trail, and monte rio redwoods, totaling over 39 dedicated work days of manual field labor across more than a dozen unique sites with 1,600 hours of service. Beyond physical maintenance, the organization prioritized…
$103,349 spent24% of program spendingConstruction overhead: the organization significantly expanded its footprint in specialized trail infrastructure through comprehensive planning and technical construction projects. A primary focus was directed toward mt. Konocti county park in lake county, where our team spearheaded the critical pre-construction phase. This involved meticulous trail planning and route flagging to ensure sustainable alignment and ecological protection, setting the foundation for future public access on this iconic volcanic peak. Simultaneously, we initiated the planning phase for a new trail system at moore creek park in napa, ensuring regional connectivity within the local park network. Furthermore, we served as a strategic consultant for marin water, successfully launching a new trail stewardship program to coordinate monthly maintenance days on mt. Tamalpais, effectively scaling our model of community-driven land management to neighboring jurisdictions.
$64,840 spentof which $260 as grants$24,000 earned by the program15% of program spendingOther programs: advocacy, education, fiscal sponsorship, volunteer days.
$68,568 spent$56,863 earned by the program16% of program spending
The 4 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $424,850.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2017 to 2018, from $26k to $91k (+256%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 5 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2020 → 2023: the base broadened from 2 funders to 5 funders, grant income rose $626 → $46k.
4 of 9 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 40% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of REDWOOD TRAILS ALLIANCE’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
REDWOOD TRAILS ALLIANCE has a broad base — no single funder exceeds 23% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 funders to its left
67% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund REDWOOD TRAILS ALLIANCE.
Largest funder’s share by year: 2020 80% · 2021 84% · 2022 54% · 2023 54% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
75% of REDWOOD TRAILS ALLIANCE's funders are still giving 1 year after their first grant; 33% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
100% of REDWOOD TRAILS ALLIANCE's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $52k arriving through sponsors registered in 4 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like REDWOOD TRAILS ALLIANCE
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Public support
89%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for REDWOOD TRAILS ALLIANCE: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds REDWOOD TRAILS ALLIANCE?
- REDWOOD TRAILS ALLIANCE (California) receives grants from 9 organizations whose IRS filings report $129,963 to it, the largest being GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC ($30,000). 3 of them have funded it in more than one year.
- How many funders does REDWOOD TRAILS ALLIANCE have?
- IRS filings report 9 organizations giving $129,963 in grants to REDWOOD TRAILS ALLIANCE, 3 of which have funded it in more than one year.
- Who is the largest funder of REDWOOD TRAILS ALLIANCE?
- GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC is the largest funder on record, with $30,000 in grants. The full list of funders is on this page.
- How can an organization like REDWOOD TRAILS ALLIANCE find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Redwood Trails Alliance →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 9 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing