Tres Hermanos

Volunteer Sign Up


About You

Volunteering

Tres Hermanos from Grand Ave

Volunteer Opportunities

The team attempting to save Tres Hermanos and the rest of Tonner Canyon is comprised entirely of volunteers. Donations of time and dollars are very much needed and appreciated. 100% of every donation goes to this important cause.

We need help with virtually everything, including our website, QuickBooks, community outreach, volunteer coordination, media outreach, fundraising and habitat restoration programs when we can arrange them, so you will have no trouble finding ways to help.

Please take a look at our list of volunteer opportunities in our signup form. If there is anything we missed that you’d like to do, please let us know. We’ve left room for you to write in your particular interest(s), if not included.

Thank you for considering the Save Tres Hermanos cause for your volunteer efforts. Your time and energy are precious and we appreciate every minute you share with us!

If you’re not yet involved, but interested in helping to save Tres Hermanos and the rest of Tonner Canyon, the largest natural,undeveloped open space in the Los Angeles area, and you like having a direct impact on the outcome of your efforts, you’ve come to the right place—and we need you! Please use this page to explore our opportunities. We would love you to join us!

Please Join Us

Click to Join us on Facebook: Facebook


Click to Join our mailing List: Mailing List

Make Your Voice Heard

Please write to the media and your elected representatives. Make public comments at the Diamond Bar and Chino Hills City Council meetings

Media Contacts:

Chino Hills City Council:

Diamond Bar City Council:

LA County Supervisor:

San Bernardino County Supervisor 4th District