Massachusetts · Nonprofit
MYSTIC RIVER WATERSHED ASSOCIATION INC
MYSTIC RIVER WATERSHED ASSOCIATION INC (Massachusetts) receives grants from 69 organizations whose IRS filings report $14,583,098 to it, the largest being BARR FOUNDATION ($7,517,950). 46 of them have funded it in more than one year.
Against its field
MYSTIC RIVER WATERSHED ASSOCIATION INC has grown faster than half of the 881 environment nonprofits its size.
this organization peer median middle 50% of peers· 881 environment nonprofits $1M–$10M, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Anna B Stearns Charitable Foundation Incshared funderslocal
- Restore America's Estuariesportfolio match
- Waterkeeper Alliance Incportfolio match
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. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
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: 2017 23% · 2018 33% · 2019 12% · 2020 21% · 2021 17% · 2022 13% · 2023 18% · 2024 43% · 2025 26%. Grants only. Government contracts and fees sit inside program revenue.
73% of MYSTIC RIVER WATERSHED ASSOCIATION INC’s revenue is contributions — about as donation-reliant as the typical peer (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 9 reported years ran a deficit.
reserve
Who funds it, year by year
2017 → 2023: the base broadened from 13 funders to 31 funders, grant income rose $133k → $4.1M.
15 of 69 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 9% 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 MYSTIC RIVER WATERSHED ASSOCIATION INC’s funders (the co-funder graph). Top 30 of 69 funders by total. 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
MYSTIC RIVER WATERSHED ASSOCIATION INC leans on a few funders — its largest provides 52% of grant income and the top three 74%; 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 26% · 2018 29% · 2019 19% · 2020 77% · 2021 44% · 2022 82% · 2023 53% — growing more concentrated.
“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
49% of MYSTIC RIVER WATERSHED ASSOCIATION INC's funders are still giving 3 years after their first grant; 67% 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
91% of MYSTIC RIVER WATERSHED ASSOCIATION INC's grant income comes from Massachusetts funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.4M arriving through sponsors registered in 12 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.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 69 funders put you under-funded among the 400 organizations that share them.
- Anna B Stearns Charitable Foundation Incshared funderslocalMA · backs 48 organizations that share your funders · funds 68 organizations near you
- Restore America's Estuariesportfolio matchits grantees resemble your mission
- Waterkeeper Alliance Incportfolio matchits grantees resemble your mission
- The Watershed Institute Incportfolio matchits grantees resemble your mission
- Watersheds United Vermont Incportfolio matchits grantees resemble your mission
- Great Lakes Aquatic Habitat Network and Fund Incportfolio matchits grantees resemble your mission
- The Norcross Wildlife Foundation Incportfolio matchits grantees resemble your mission
- River Networkportfolio matchits grantees resemble your mission
- American Rivers Incportfolio matchits grantees resemble your mission
- The Echo Charitable Foundationportfolio matchits grantees resemble your mission
- Wellington Management Foundationshared fundersMA · backs 57 organizations that share your funders
- Bushrod H Campbell & Adah F Hall Charity Fundshared funderslocalMA · backs 128 organizations that share your funders · funds 233 organizations near you
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Government funding MYSTIC RIVER WATERSHED ASSOCIATION INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $4.4M on record — $3.4M federal, $984k state.
- Environmental Protection Agency$1.6M
- Department of the Interior$1.4M
- Department of Agriculture$411k
- (PP) STATE AID/POL SUB$981k
- (HH) CONSULTANT SVCS (TO DEPTS)$3k
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 MYSTIC RIVER WATERSHED ASSOCIATION INC
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Massachusetts
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
89% of spending goes to programs.
Governance
Public support
55%
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 MYSTIC RIVER WATERSHED ASSOCIATION 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds MYSTIC RIVER WATERSHED ASSOCIATION INC?
- MYSTIC RIVER WATERSHED ASSOCIATION INC (Massachusetts) receives grants from 69 organizations whose IRS filings report $14,583,098 to it, the largest being BARR FOUNDATION ($7,517,950). 46 of them have funded it in more than one year.
- How many funders does MYSTIC RIVER WATERSHED ASSOCIATION INC have?
- IRS filings report 69 organizations giving $14,583,098 in grants to MYSTIC RIVER WATERSHED ASSOCIATION INC, 46 of which have funded it in more than one year.
- Who is the largest funder of MYSTIC RIVER WATERSHED ASSOCIATION INC?
- BARR FOUNDATION is the largest funder on record, with $7,517,950 in grants. The full list of funders is on this page.
- How can an organization like MYSTIC RIVER WATERSHED ASSOCIATION INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Massachusetts. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
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 69funders 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 August 27, 2026. What this page cannot tell you · view filing