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California · 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. Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited…

$220k
Granted FY2025(still arriving)
11
Grants FY2025
13
Organizations funded FY2024
62%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$20,000
Largest grant, FY2025
$30,000
Organizations funded a year
8 to 13
FY2022 to FY2024
States reached, FY2025
5
Total assets, FY2025
$4.3M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 62% of the organizations Tahoe Maritime Foundation funded were first-time grantees, receiving 68% of its grant dollars.

New vs renewed · share of each year

In FY2024, 33% of grant dollars renewed an existing relationship; $135k went to new ones.

50%100%’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’23’24
Arts & CultureYouth DevelopmentEnvironmentRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving11$220k18%
FY202413$200k62%
FY20239$201k33%
FY20228$215kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2022 to 2025.

Arts & Culture$354kYouth Development$242kEnvironment$89kRecreation & Sports$60kEducation$46kHuman Services$25kPhilanthropy$20k

Top grantees

Largest recipients by total granted, FY2022 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 17 grantees

What it could do for these grantees

Plus 4 recipients with no EIN on record ($120k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Tahoe Maritime Foundation supplied at peak.

25%50%75%100%$1.0M$10Mgrantee revenue →↑ funder's share of their budgetThe Mariners' Museum: $112,300 over 3y, 0.5% of budgetBoys & Girls Club of Lake Tahoe: $95,000 over 4y, 0.9% of budgetMinnesota Lakes Maritime Society: $70,000 over 4y, 3.5% of budgetThe Antique Boat Museum: $57,350 over 4y, 0.8% of budgetSouthbay Youth Maritime Foundation: $55,000 over 1y, 20% of budgetNorth Lake Tahoe Historical Society: $49,500 over 2y, 12% of budgetBoy Scouts of America 55 Silicon Valley Monterey Bay Council: $49,250 over 2y, 0.4% of budgetCall of the Sea: $43,000 over 2y, 1.5% of budgetSierra State Parks Foundation: $37,000 over 1y, 4.0% of budgetWestern Flyer Foundation: $25,000 over 1y, 1.8% of budgetCLEAN UP THE CAYES dba CLEAN UP THE LAKE: $25,000 over 1y, 3.1% of budgetPeninsula Youth Sailing Foundation: $23,000 over 2y, 0.5% of budgetChesapeake Bay Maritime Museum Inc: $20,000 over 1y, 0.3% of budgetTahoe Community Sailing Foundation: $20,000 over 4y, 9.0% of budgetThe Spaulding Wooden Boat Center: $15,000 over 1y, 0.9% of budgetPenobscot Marine Museum: $5,000 over 1y, 0.5% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 16.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Ibm International FoundationNY12.2× affinity4 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Tahoe Maritime Foundation with peer funders

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.

About Tahoe Maritime Foundation

How much does Tahoe Maritime Foundation give?
Tahoe Maritime Foundation reported 11 grants totaling $220,000 in its FY2025 IRS filing. It funded between 8 and 13 organizations a year over FY2022 to FY2024.
What does Tahoe Maritime Foundation fund?
By grant dollars over FY2022 to FY2025, its largest causes are Arts & Culture (42%), Youth Development (29%), Environment (11%).
Who are Tahoe Maritime Foundation's largest grantees?
By total granted over FY2022 to FY2025: The Mariners' Museum ($112k), Boys & Girls Club of Lake Tahoe ($95k), Minnesota Lakes Maritime Society ($70k).
Does Tahoe Maritime Foundation fund new organizations?
In FY2024, 62% of the organizations it funded were first-time grantees.
Does Tahoe Maritime Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Tahoe Maritime Foundation?
Its strongest co-funders, measured against what their size predicts, include Ibm International Foundation, Morgan Stanley Global Impact Funding Trust Inc, Vanguard Charitable Endowment Program.
Where is Tahoe Maritime Foundation based?
Tahoe Maritime Foundation is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 21 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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