New York · Nonprofit
LEFFERTS TIDE MILL & PRESERVE INC
LEFFERTS TIDE MILL & PRESERVE INC (New York) receives grants from 6 organizations whose IRS filings report $248,000 to it, the largest being THE NATURE CONSERVANCY ($200,000). 2 of them have funded it in more than one year, and 91% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $61k
- Funders on record
- 6
- Grants received
- $248k
- Net assets
- $222k
What Lefferts Tide Mill & Preserve Inc does
Mission
Preserve van wyck lefferts tide mill
As stated on its FY2025 Form 990-EZ.
Program
Repaired physical & structural integrity of the dam as a protective barrier;created & preserved sanctuary for native & migratory waterfowl
$45,038 spent100% of program spending
The program described on its FY2025 Form 990-EZ. Program spending in total: $45,038.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 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.
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 $366k to $170k (−54%).
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.
97% of LEFFERTS TIDE MILL & PRESERVE INC’s revenue is contributions — more donation-reliant than the typical peer (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 7 reported years ran a deficit.
reserve
Who funds it, year by year
2019 → 2023: the base narrowed from 2 funders to 1 funder, grant income fell $205k → $5k.
3 of 6 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 91% 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 LEFFERTS TIDE MILL & PRESERVE 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
LEFFERTS TIDE MILL & PRESERVE INC leans on a few funders — its largest provides 81% of grant income and the top three 97%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
91% 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 LEFFERTS TIDE MILL & PRESERVE INC.
Largest funder’s share by year: 2019 98% · 2020 100% · 2021 87% · 2022 70% · 2023 100% — 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.
Where its funders are
91% of LEFFERTS TIDE MILL & PRESERVE INC's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $22k that is directly attributable, 93% of it comes from funders outside New York, across 2 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $227k arriving through sponsors registered in 3 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.
Against its field
LEFFERTS TIDE MILL & PRESERVE INC runs a healthier operating margin than half of the 2,195 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,195 environment nonprofits under $100k, FY2025
Organizations like LEFFERTS TIDE MILL & PRESERVE 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 New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
99%
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 LEFFERTS TIDE MILL & PRESERVE 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 LEFFERTS TIDE MILL & PRESERVE INC?
- LEFFERTS TIDE MILL & PRESERVE INC (New York) receives grants from 6 organizations whose IRS filings report $248,000 to it, the largest being THE NATURE CONSERVANCY ($200,000). 2 of them have funded it in more than one year, and 91% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does LEFFERTS TIDE MILL & PRESERVE INC have?
- IRS filings report 6 organizations giving $248,000 in grants to LEFFERTS TIDE MILL & PRESERVE INC, 2 of which have funded it in more than one year.
- Who is the largest funder of LEFFERTS TIDE MILL & PRESERVE INC?
- THE NATURE CONSERVANCY is the largest funder on record, with $200,000 in grants. The full list of funders is on this page.
- How can an organization like LEFFERTS TIDE MILL & PRESERVE INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. 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 Lefferts Tide Mill & Preserve →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 6 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