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Washington, D.C. · Private foundation

Potomac River Swim Inc

$450
Granted FY2021
9
Grants FY2021
9
Organizations funded FY2021
11%
First-time grantees FY2021
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Median grant, FY2021
$50
Largest grant, FY2021
$50
Organizations funded a year
9 to 9
FY2020 to FY2021
States reached, FY2021
3

How open it is to new grantees

In FY2021, 11% of the organizations Potomac River Swim Inc funded were first-time grantees, receiving 11% of its grant dollars.

The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY20219$45011%
FY20209$450n/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2021.

Environment$750Public Safety & Disaster$100Community Improvement$50

Top grantees

Largest recipients by total granted, FY2020 to FY2021, and the share of each one’s budget the grants supplied at peak.

Plus 4 recipients with no EIN on record ($300), not named here.

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 set of overlaps that mostly run through this funder rather than between each other.

Amazonsmile FoundationWA3.3× affinity4 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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 Potomac River Swim Inc with peer funders

About Potomac River Swim Inc

How much does Potomac River Swim Inc give?
Potomac River Swim Inc reported 9 grants totaling $450 in its FY2021 IRS filing. It funded between 9 and 9 organizations a year over FY2020 to FY2021.
What does Potomac River Swim Inc fund?
By grant dollars over FY2020 to FY2021, its largest causes are Environment (83%), Public Safety & Disaster (11%), Community Improvement (6%).
Who are Potomac River Swim Inc's largest grantees?
By total granted over FY2020 to FY2021: West Virginia Rivers Coalition Inc ($100), St Mary's River Watershed Association Inc ($100), Chesapeake Bay Foundation Inc ($100).
Does Potomac River Swim Inc fund new organizations?
In FY2021, 11% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Potomac River Swim Inc?
Its strongest co-funders, measured against what their size predicts, include Amazonsmile Foundation.
Where is Potomac River Swim Inc based?
Potomac River Swim Inc is based in DC.

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 10 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 2021, released 2021. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2025) is on record and reports no grant expense, so the figures above are from FY2021, the most recent year this funder made grants.

Source object · view filing

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