California · Nonprofit
ANZA-BORREGO FOUNDATION
ANZA-BORREGO FOUNDATION (California) receives grants from 26 organizations whose IRS filings report $1,246,221 to it, the largest being RESOURCES LEGACY FUND ($648,760). 16 of them have funded it in more than one year.
- Revenue FY2025
- $1.5M
- Funders on record
- 26
- Grants received
- $1.2M
- Net assets
- $14M
What Anza-Borrego Foundation does
Mission
Our mission is to protect and preserve the natural landscapes, wildlife habitat and cultural heritage of anza-borrego desert state park and its surrounding region for the benefit and enjoyment of present and future generations.
As stated on its FY2025 Form 990.
Programs
INTERPRETIVE SALES: ABF operates two retail locations, one inside the Park Visitor Center and one in Borrego Springs. Both retail locations sell interpretive merchandise such as books, apparel, and maps, and staff help visitors discover and remember the wonders of the Park. Proceeds from the sales directly support education and interpretation programs.
$694,822 spent47% of program spendingEDUCATION PROGRAMS: Anza-Borrego Foundation offers environmental education programs, including in-field activities, virtual and in-person lectures and workshops, guided hikes and drives for adults and children. Topics include climate science, photography, archaeology, paleontology, geology, hiking, botany, quiet and astronomy.
$539,818 spentof which $5,000 as grants$111,441 earned by the program36% of program spendingLAND ACQUISITION: Anza-Borrego Foundation conserves lands through outright purchase or donation from willing sellers. Purchased properties are transferred to Anza-Borrego Desert State Park for perpetual stewardship and management. ABF funds the purchases through grants and private donations. Since 2006, the Resources Legacy Fund has provided more than $3 million for land conservation under its Preserving Wild California Program and Wilderness Acquisition Programs. Over 55,000 acres have been preserved, and approximately 14,000 acres of inholdings remain. With funding from grants and dedicated donors, ABF continues the land conservation program to make the Park whole.
$144,671 spent$2,408 earned by the program10% of program spendingPARK SUPPORT: As the official park partner, ABF is the fiscal agent, supporting the needs of the park superintendent, botany, Archaeology, Paleontology, and the Visitors Center. ABF also provides resources for special projects for the Park.
$114,247 spent8% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $1,493,558.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $2.8M to $12M (+319%).
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.
Government-grant reliance: 2017 9% · 2018 3% · 2019 0% · 2022 4% · 2023 2%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2017 → 2023: the base broadened from 7 funders to 13 funders, grant income fell $430k → $125k.
7 of 26 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 22% 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 ANZA-BORREGO FOUNDATION’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
ANZA-BORREGO FOUNDATION leans on a few funders — its largest provides 52% of grant income and the top three 70%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
76% 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 ANZA-BORREGO FOUNDATION.
Largest funder’s share by year: 2017 93% · 2018 48% · 2019 23% · 2020 78% · 2021 31% · 2022 32% · 2023 24% — diversifying over time.
“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.
How long its funders stay
31% of ANZA-BORREGO FOUNDATION's funders are still giving 3 years after their first grant; 62% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
78% of ANZA-BORREGO FOUNDATION's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $274k arriving through sponsors registered in 6 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.
Government funding ANZA-BORREGO FOUNDATION receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $500k on record.
- Environmental Protection Agency$500k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like ANZA-BORREGO FOUNDATION
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 California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
74% of spending goes to programs.
Governance
Public support
63%
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 ANZA-BORREGO FOUNDATION: 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 ANZA-BORREGO FOUNDATION?
- ANZA-BORREGO FOUNDATION (California) receives grants from 26 organizations whose IRS filings report $1,246,221 to it, the largest being RESOURCES LEGACY FUND ($648,760). 16 of them have funded it in more than one year.
- How many funders does ANZA-BORREGO FOUNDATION have?
- IRS filings report 26 organizations giving $1,246,221 in grants to ANZA-BORREGO FOUNDATION, 16 of which have funded it in more than one year.
- Who is the largest funder of ANZA-BORREGO FOUNDATION?
- RESOURCES LEGACY FUND is the largest funder on record, with $648,760 in grants. The full list of funders is on this page.
- How can an organization like ANZA-BORREGO FOUNDATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Anza-Borrego →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 26 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