Arizona · Nonprofit
TUBAC NATURE CENTER
TUBAC NATURE CENTER (Arizona) receives grants from 2 organizations whose IRS filings report $6,342 to it, the largest being SANTA CRUZ VALLEY HERITAGE ALLIANCE INC ($6,000). 1 of them have funded it in more than one year.
- Revenue FY2025
- $42k
- Funders on record
- 2
- Grants received
- $6k
- Net assets
- $148k
What Tubac Nature Center does
Mission
To provide education, appreciation and conservation of the natural environment with a focus on the Upper Santa Cruz River Valley of Arizona.
As stated on its FY2025 Form 990-EZ.
Programs
1. Santa Cruz River Habitat Conservation: In keeping with the 2023 Conceptual Master Plan for the Tubac Nature Preserve, conducted projects to protect and restore critical river habitats in the Santa Cruz River Floodplain in Tubac. These efforts are benefitting a minimum of 1500 people living in Tubac, plus others of unknown numbers visiting. The efforts will preserve habitats for birds and wildlife including several threatened species. a. Completed Wetland Restoration Plan under grant with Santa Cruz Valley National Heritage Area. b. Conducted four volunteer work events to restore habitats by removing invasive grasses in the river floodplain. Involved approximately 50 volunteers. c. Signed Memorandum of Understanding with landowner for wetland restoration including hydrological monitoring and engineering design of wetland restoration in the Tubac Borrow Pit, and to continue invasive plant control. d. Signed contract with Tucson Bird Alliance to conduct monitoring, and installed water flow meter and groundwater monitoring well. e. Applied for Arizona Department of Forestry and Fire Management Invasive Plant Grant to continue invasive plant control efforts.
$8,462 spent78% of program spending3. Nature Education 2025 a. The Tubac Nature Center has many activities that have the purpose of engaging people with an understanding of the natural environment. We have accomplished this by having learning activities such as bird walks, hikes, and nature walks that get people out in nature. We had over 800 attendees for these activities. b. We also have monthly lectures about various aspects of nature. For this time period, we had 150 people attend these informative lectures. c. We also have a program of outreach to the community by our presence in two festivals where we engage visitors to our booth with the natural environment through games and discussions about our upcoming activities. We have engaged over 1700 people at these events. d. We are also running specific activities for families to increase both adults and childrens awareness of the natural environment around them. These walks through the year and Family Day activities at the HawkWatch Festival involved over 120 children and adults.
$1,472 spent14% of program spending2. Conducted hawk watch in Ron Morriss Park, Tubac from February 15 to April 30, 2025, including 5-day hawk watch festival in March. a. The hawk watch is an annual event that provides valuable scientific data on populations of at least 15 species of raptors that migrate through Tubac each spring. b. The hawk watch festival raises awareness about the hawks and the conservation of the Santa Cruz River. Engaged 8 non-profit organizations in the festival. At least 2000 visitors attended the hawk watch and/or hawk watch festival.
$863 spent8% of program spending
The 3 programs described on its FY2025 Form 990-EZ. Program spending in total: $10,797.
Who funds it, year by year
2020 → 2023: the base held at 1 funder, grant income rose $27 → $76.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% 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 TUBAC NATURE CENTER’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
TUBAC NATURE CENTER leans on a few funders — its largest provides 95% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% 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 TUBAC NATURE CENTER.
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 100% · 2023 100% — broadly stable.
“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.
Where its funders are
100% of TUBAC NATURE CENTER's grant income comes from Arizona funders.
Funder states come from each funder’s own filing. $342 arriving through sponsors registered in 1 state 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.
Against its field
TUBAC NATURE CENTER runs a healthier operating margin than three-quarters of the 2,195 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,195 environment nonprofits under $100k, FY2025
Organizations like TUBAC NATURE CENTER
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 Arizona
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
100%
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 TUBAC NATURE CENTER: 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 TUBAC NATURE CENTER?
- TUBAC NATURE CENTER (Arizona) receives grants from 2 organizations whose IRS filings report $6,342 to it, the largest being SANTA CRUZ VALLEY HERITAGE ALLIANCE INC ($6,000). 1 of them have funded it in more than one year.
- How many funders does TUBAC NATURE CENTER have?
- IRS filings report 2 organizations giving $6,342 in grants to TUBAC NATURE CENTER, 1 of which have funded it in more than one year.
- Who is the largest funder of TUBAC NATURE CENTER?
- SANTA CRUZ VALLEY HERITAGE ALLIANCE INC is the largest funder on record, with $6,000 in grants. The full list of funders is on this page.
- How can an organization like TUBAC NATURE CENTER find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Arizona. 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 Tubac Nature Center →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2025–2025), and the filings of 2 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