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New Mexico · Private foundation

Louise Arnold Maddux Environmental Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$46k
Granted FY2025(still arriving)
46
Grants FY2025
34
Organizations funded FY2024
21%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$1,000
Largest grant, FY2025
$1,000
Organizations funded a year
24 to 34
FY2018 to FY2024
States reached, FY2025
15
Total assets, FY2025
$1.0M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 21% of the organizations Louise Arnold Maddux Environmental Foundation funded were first-time grantees, receiving 21% of its grant dollars.

New vs renewed · share of each year

In FY2024, 79% of grant dollars renewed an existing relationship; $7k went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

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

’18’19’20’21’22’23’24
EnvironmentInternationalAnimalsHuman ServicesFood & NutritionOther
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 arriving46$46k33%
FY202434$34k21%
FY202332$32k16%
FY202233$33k18%
FY202125$25k8%
FY202024$24k8%
FY201931$31k13%
FY201828$28k7%
97% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Environment$152kAnimals$38kFood & Nutrition$29kInternational$21kHousing & Shelter$12kScience & Tech$9kPublic Benefit$5kHealth$4kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

NH
IL
NY
MA
PA
CA
CO
VA
MD
DE
NM
AR
NC
DC
HI
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 45 grantees
All grantees of Louise Arnold Maddux Environmental Foundation by total granted
GranteeTotal grantedYearsShare of their budget
The Food Depot$9,00090%
Conejos County Clean Water Inc$9,00091%
Solar Cookers International$9,00090%
The Student Conservation Association Inc$9,00090%
Ocean Conservancy$9,00090%
The Union of Concerned Scientists Inc$9,00090%
Rural Advancement Foundation Internation$9,00090%
Santa Fe Watershed Association$9,00091%
The Heart and Soul Animal Sanctuary$9,00090%
Los Alamos Study Group$9,00091%
Medecins Sans Frontieres USA Inc$9,00090%
New Mexico Land Conservancy$8,00080%
Earth Care International Earth Care New Mexico$7,00071%
Rocky Mountain Institute$7,00070%
Rocky Mountain Field Institute Inc$6,00060%
Hopeworks$6,00060%
American Rivers Inc$6,00060%
Trees for the Future Inc$6,00060%
Storehouse New Mexico$5,00050%
The Surfrider Foundation$5,00050%
New River Land Trust$4,00040%
Sea Turtle Conservancy$4,00040%
World Central Kitchen Inc$3,00030%
Project Street Vet$3,00030%
350org$3,00030%
Hope for Paws$2,00020%
Think New Mexico$2,00020%
Trout Unlimited$2,0002n/a
Roadrunner Food Bank Inc$2,00020%
Earth Conservation Corps$2,00020%
New Mexico Environmental Law Center$1,0001n/a
Sustainable Blacksburg Inc$1,0001n/a
RiverLink Inc$1,0001n/a
Nehemiah Group dba Chicago Eco House$1,00010%
The Manzano Conservation Foundation$1,0001n/a
Harlem Grown Inc$1,0001n/a
Land of Enchantment Wildlife Foundation$1,0001n/a
Hermits Peak Watershed Alliance$1,0001n/a
Reunity Resources$1,0001n/a
Kitchen Angels Inc$1,00010%
Urban Growers Collective Inc$1,0001n/a
Paw Warriors Inc$1,00011%
Rio Grande Community Farms$1,0001n/a
Tree New Mexico Inc$1,0001n/a
Natural Capitalism Solutions Inc$1,00010%

What it could do for these grantees

Plus 32 recipients with no EIN on record ($90k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Louise Arnold Maddux Environmental Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetThe Food Depot: $9,000 over 9y, 0.0% of budgetConejos County Clean Water Inc: $9,000 over 9y, 0.6% of budgetSolar Cookers International: $9,000 over 9y, 0.2% of budgetThe Student Conservation Association Inc: $9,000 over 9y, 0.0% of budgetOcean Conservancy: $9,000 over 9y, 0.0% of budgetThe Union of Concerned Scientists Inc: $9,000 over 9y, 0.0% of budgetRural Advancement Foundation Internation: $9,000 over 9y, 0.1% of budgetSanta Fe Watershed Association: $9,000 over 9y, 0.6% of budgetThe Heart and Soul Animal Sanctuary: $9,000 over 9y, 0.3% of budgetLos Alamos Study Group: $9,000 over 9y, 1.3% of budgetMedecins Sans Frontieres USA Inc: $9,000 over 9y, 0.0% of budgetNew Mexico Land Conservancy: $8,000 over 8y, 0.1% of budgetEarth Care International Earth Care New Mexico: $7,000 over 7y, 0.9% of budgetRocky Mountain Institute: $7,000 over 7y, 0.0% of budgetRocky Mountain Field Institute Inc: $6,000 over 6y, 0.1% of budgetHopeworks: $6,000 over 6y, 0.0% of budgetAmerican Rivers Inc: $6,000 over 6y, 0.0% of budgetTrees for the Future Inc: $6,000 over 6y, 0.0% of budgetStorehouse New Mexico: $5,000 over 5y, 0.0% of budgetThe Surfrider Foundation: $5,000 over 5y, 0.0% of budgetNew River Land Trust: $4,000 over 4y, 0.2% of budgetSea Turtle Conservancy: $4,000 over 4y, 0.0% of budgetWorld Central Kitchen Inc: $3,000 over 3y, 0.0% of budgetProject Street Vet: $3,000 over 3y, 0.1% of budget350org: $3,000 over 3y, 0.0% of budgetHope for Paws: $2,000 over 2y, 0.0% of budgetThink New Mexico: $2,000 over 2y, 0.0% of budgetRoadrunner Food Bank Inc: $2,000 over 2y, 0.0% of budgetEarth Conservation Corps: $2,000 over 2y, 0.2% of budgetNehemiah Group dba Chicago Eco House: $1,000 over 1y, 0.1% of budgetKitchen Angels Inc: $1,000 over 1y, 0.1% of budgetPaw Warriors Inc: $1,000 over 1y, 0.6% of budgetNatural Capitalism Solutions Inc: $1,000 over 1y, 0.0% 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 33.

Nonprofits that may fit its grantmaking

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.

Santa Fe Community FoundationNM25.3× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Santa Fe Community Foundation · Albuquerque Community Foundation · Patagoniaorg · Nusenda Foundation · Marshall L and Perrine D McCune Charitable Foundation Inc · Clif Family Foundation · Bolene Charitable Trust · Lannan Foundation · Carl C Anderson Sr and Marie Jo Anderson Charitable Foundation · National Fish and Wildlife Foundation · S B Foundation · The Abeles 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 Louise Arnold Maddux Environmental Foundation with peer funders

About Louise Arnold Maddux Environmental Foundation

How much does Louise Arnold Maddux Environmental Foundation give?
Louise Arnold Maddux Environmental Foundation reported 46 grants totaling $46,000 in its FY2025 IRS filing. It funded between 24 and 34 organizations a year over FY2018 to FY2024.
What does Louise Arnold Maddux Environmental Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Environment (52%), Animals (13%), Food & Nutrition (10%).
Who are Louise Arnold Maddux Environmental Foundation's largest grantees?
By total granted over FY2017 to FY2025: The Food Depot ($9k), Conejos County Clean Water Inc ($9k), Solar Cookers International ($9k).
Does Louise Arnold Maddux Environmental Foundation fund new organizations?
In FY2024, 21% of the organizations it funded were first-time grantees.
Does Louise Arnold Maddux Environmental 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 Louise Arnold Maddux Environmental Foundation?
Its strongest co-funders, measured against what their size predicts, include Santa Fe Community Foundation, Albuquerque Community Foundation, Patagoniaorg.
Where is Louise Arnold Maddux Environmental Foundation based?
Louise Arnold Maddux Environmental Foundation is based in NM.

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 78 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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