· Private foundation
Tahoe Maritime Foundation
THE PRIMARY FUNCTION OF THE MUSEUM IS TO STIMULATE INTEREST IN, INCREASE KNOWLEDGE OF, AND MAINTAIN WATERCRAFT AND MARINE ARTIFACTS SIGNIFICANT IN LAKE TAHOE'S MARITIME HISTORY THROUGH HISTORIC PRESERVATION, INTERPRETATION AND PUBLIC EDUCATION.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2022–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k1 grant · $5k
- $10k–50k10 grants · $215k
| Recipient | Amount |
|---|---|
| THE MARINERS' MUSEUM | $30,000 |
| WESTERN FLYER FOUNDATION | $25,000 |
| BOYS & GIRLS CLUB OF LAKE TAHOE | $25,000 |
| ANTIQUE BOAT MUSEUM | $24,000 |
| CALL OF THE SEA | $23,000 |
| MINNESOTA LAKES MARITIME SOCIETY | $20,000 |
| WOODEN BOATS FOR VETERANS FOUNDATION | $20,000 |
| PENINSULA YOUTH SAILING FOUNDATION | $18,000 |
| LEAGUE TO SAVE LAKE TAHOE | $15,000 |
| NORTH LAKE TAHOE HISTORICAL SOCIETY | $15,000 |
| TAHOE COMMUNITY SAILING FOUNDATION INC | $5,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY22–25) land where the poverty rate runs at 11%, against an area that typically sits at 7%. 88% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
10 repeat relationships — 9 still active in FY2025, 1 since wound down; 2 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 82% of grant dollars renewed an existing relationship; $40k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- BGBoys & Girls Club of Lake Tahoe4× · 2022–2025 · $95k · revenue +32%
- TATHE ANTIQUE BOAT MUSEUM4× · 2022–2025 · $57k · revenue +136%
- BSBOY SCOUTS OF AMERICA 55 SILICON VALLEY MONTEREY BAY COUNCIL2× · 2022–2023 · $49k · revenue +82%
Funded once
- SYSOUTHBAY YOUTH MARITIME FOUNDATIONone grant, 2022 · $55k · revenue -19%
- SSSierra State Parks Foundationone grant, 2022 · $37k · revenue +8%
- CUCLEAN UP THE CAYES dba CLEAN UP THE LAKEone grant, 2024 · $25k · revenue 0%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Preserve and display New Jersey's rich boating history.
The museum seeks to maintain and preserve the history of the region around moosehead lake through cruises, tours, and charters of the restored, last working lake steamer on moosehead lake.
The Center for Wooden Boats promotes Northwest Maritime Heritage through education, interpretation and hands-on experience in building, maintaining and using historic small craft.
The California Surf Museum serves as an international repository and resource center on the lifestyle sport of surfing through capturing,preserving and chronicling its art, culture and heritage for the education and enjoyment of current…
Creating excellent exhibits and educational experiences that celebrate the santa barbara channel and illuminate our rich connections with the sea.
The stated purpose of the museum shall be:a.to preserve long island's maritime history and heritage for educational purposes.b.to purchase, collect, restore and preserve boats, vessels and related equipment having to do with the past and…
To celebrate, honor, experience, and share the story of Maine's maritime heritage.
To connect people to the past, present, and future of Maine's waterways and their global reach.
For reference, the grantee most central to the portfolio’s shape is Chesapeake Bay Maritime Museum Inc and the most unlike its peers is League to Save Lake Tahoe. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
17 grantees tracked through their own filings, 2017–2026.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2026, not grant rows in a single year — so this will not match the grant count on the cover. 17 of the 21 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds THE MARINERS' MUSEUM ↗
- Who funds Boys & Girls Club of Lake Tahoe ↗
- Who funds MINNESOTA LAKES MARITIME SOCIETY ↗
- Who funds THE ANTIQUE BOAT MUSEUM ↗
- Who funds SOUTHBAY YOUTH MARITIME FOUNDATION ↗
- Who funds NORTH LAKE TAHOE HISTORICAL SOCIETY ↗
- Who funds BOY SCOUTS OF AMERICA 55 SILICON VALLEY MONTEREY BAY COUNCIL ↗
- Who funds CALL OF THE SEA ↗
- Who funds Sierra State Parks Foundation ↗
- Who funds WESTERN FLYER FOUNDATION ↗
- Who funds CLEAN UP THE CAYES dba CLEAN UP THE LAKE ↗
- Who funds PENINSULA YOUTH SAILING FOUNDATION ↗
- Who funds CHESAPEAKE BAY MARITIME MUSEUM INC ↗
- Who funds TAHOE COMMUNITY SAILING FOUNDATION ↗
- Who funds The Spaulding Wooden Boat Center ↗
- Who funds LEAGUE TO SAVE LAKE TAHOE ↗
- Who funds PENOBSCOT MARINE MUSEUM ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Ibm International Foundation · Morgan Stanley Global Impact Funding Trust Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · American Online Giving Foundation Inc · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Tahoe Maritime Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
- Chesapeake Bay Maritime Museum Inc — 17% of income from government
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Tahoe Maritime Foundation?
Find your warmest path to Tahoe Maritime Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.