Oregon · Nonprofit
Friends of South Slough Reserve Inc
Friends of South Slough Reserve Inc (Oregon) receives grants from 4 organizations whose IRS filings report $38,649 to it, the largest being The Pew Charitable Trusts ($36,800). 1 of them have funded it in more than one year.
- Revenue FY2025
- $43k
- Funders on record
- 4
- Grants received
- $39k
- Net assets
- $1.0M
What Friends of South Slough Reserve Inc does
Mission
To support protection and stewardship of estuaries by being a trusted voice on estuary policy and by enhancing the work of South Slough Reserve.
As stated on its FY2025 Form 990.
Programs
Science Research. The Organization is committed to protecting and enhancing the ecological health, functions, and natural processes of estuaries while advancing the mission of the South Slough National Estuarine Research Reserve. Through collaborative science and conservation initiatives, the Organization supports projects such as upland forest restoration, habitat enhancement, water quality monitoring, and the collection of environmental samples for environmental DNA (eDNA) analysis. These efforts contribute to a greater scientific understanding of coastal ecosystems and help preserve the Reserves diverse habitats and native species for future generations.
$17,584 spent44% of program spendingInternship Program & Public Involvement. The Organization provides meaningful opportunities for students, interns, volunteers, and community members to actively participate in coastal science, stewardship, and environmental education. Interns assist with field research, ecological monitoring, data collection, habitat restoration, and public outreach activities while gaining valuable hands-on experience in environmental science and conservation. Public involvement initiatives foster community engagement, promote environmental awareness, and strengthen connections between people and the unique natural resources of the South Slough Reserve.
$16,548 spent41% of program spendingEducation & Interpretive Programs. The Organization sponsors and supports a wide variety of educational and interpretive programs designed to inspire appreciation, understanding, and stewardship of coastal ecosystems. Programs include classes and guided experiences focused on topics such as estuaries, tides, clamming, birding, bat habitats, mushroom identification, and other aspects of the Reserves natural and cultural history. The Organization also supports summer camps, hiking and nature walks, kayaking and paddling excursions, and other outdoor learning opportunities that encourage visitors of all ages to explore and experience the South Slough Reserve firsthand.
$3,658 spent9% of program spendingReserve Enhancement. The Organization supports projects and improvements that enhance visitor access, safety, and enjoyment of the South Slough National Estuarine Research Reserve while protecting its natural resources. Efforts may include trail and facility improvements, accessibility enhancements, interpretive signage, habitat restoration, and infrastructure projects that improve public access to educational and recreational opportunities. These enhancements help ensure the Reserve remains an accessible, welcoming, and sustainable destination for research, learning, and outdoor recreation.
$2,386 spent6% of program spending
The 4 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $40,176.
The organization over time
Each line starts at 100 in 2018, so what you read is the shape rather than the size: 150 means half as much again as 2018, 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 2020 to 2021, from $159k to $1.1M (+613%).
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.
Government-grant reliance: 2023 50% · 2024 20% · 2025 45%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 8 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
2017 → 2023: the base held at 1 funder, grant income fell $1k → $35.
1 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 0% 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 Friends of South Slough Reserve Inc’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
Friends of South Slough Reserve Inc leans on a few funders — its largest provides 95% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 100% · 2020 97% · 2021 100% · 2022 100% · 2023 100% — broadly stable.
“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.
Where its funders are
Friends of South Slough Reserve Inc draws 98% of its grant income from funders outside Oregon, across 3 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $149 arriving through sponsors registered in 1 state 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.
Government funding Friends of South Slough Reserve Inc receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $265 on record.
- OTHER SERVICES$120
- OTHER SUPPLIES$83
- OFFICE SUPPLIES$50
- FACILITIES SUPPLIES$12
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like Friends of South Slough Reserve Inc
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 Oregon
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Friends of South Slough Reserve Inc: 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 Friends of South Slough Reserve Inc?
- Friends of South Slough Reserve Inc (Oregon) receives grants from 4 organizations whose IRS filings report $38,649 to it, the largest being The Pew Charitable Trusts ($36,800). 1 of them have funded it in more than one year.
- How many funders does Friends of South Slough Reserve Inc have?
- IRS filings report 4 organizations giving $38,649 in grants to Friends of South Slough Reserve Inc, 1 of which have funded it in more than one year.
- Who is the largest funder of Friends of South Slough Reserve Inc?
- The Pew Charitable Trusts is the largest funder on record, with $36,800 in grants. The full list of funders is on this page.
- How can an organization like Friends of South Slough Reserve Inc find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Oregon. 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 Friends of South Slough Reserve →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2018–2025), and the filings of 4 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