Mission
TO ASSIST WITH MAINTAINING AND INTERPRETING MOUNT DIABLO STATE PARK, AN ECOLOGICAL TREASURE OF THE SAN FRANCISCO BAY AREA.
Public Charity
MT DIABLO INTERPRETIVE ASSOCIATION
MT DIABLO INTERPRETIVE ASSOCIATION, of WALNUT CREEK, CA, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $394K in revenue, $326K in expenses, $1.3M in total assets. 8 publicly reported grants to this organization, totaling roughly $151K, appear in IRS filings.
EIN: 237444529
WALNUT CREEK, CA
Parks & Playgrounds
NTEE: N32
Latest filing: 2025
Total Revenue$394K
Total Expenses$326K
Total Assets$1.3M
Grant Records8
Funding Total$151K
Filing Years2021–2025
Sample Grants Received
MITCHELL CANYON VISITORS CENTER
$20,000
For grant recipient's exempt purposes
$10,550
MITCHELL CANYON VISITORS CENTER
$17,121
HUMAN SERVICES
$27,100
For grant recipient's exempt purposes
$26,650
Showing up to 5 of 8 total records — full history available with membership.
Officers & Directors
Director
Carol Lane
Treasurer
Daniel Fitzgerald
Secretary
Dan Sandri
Director
Dick Nicoll
Director
Julie Braun Martin
Director
Leslie Contreras
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $394K | $326K | $1.3M |
| 2024 | $457K | $197K | $1.2M |
| 2023 | $541K | $333K | $972K |
| 2022 | $284K | $77K | $764K |
| 2021 | $125K | $104K | $557K |
Between 2021 and 2025, reported annual revenue grew from $125K to $394K (+216%), with total assets most recently reported at $1.3M.
Interactive year-over-year charts and full filing details available with membership.