Since 1974, CBTA’s mission has been to support the delivery of high quality educational and interpretive programs at Calaveras Big Trees State Park through raising and managing funds and financially assisting California State Parks in carrying out those activities. In this way we are enhancing the visitor’s experience and enjoyment for the cultural and recreational resources at Calaveras Big Trees State Park. These high-quality experiences enrich the lives of our park visitors.

Your donation to the CBTA will help fund the following:

  • Junior Cub and Ranger Programs
  • School Tours
  • Family Day
  • Winter Warming Hut
  • Winter Snowshoe Tours
  • Seminars and Workshops
  • Campfire Programs
  • Scholarships
  • Volunteer Training and Recognition
  • Interpretive Staffing
  • Internships
  • Publications
  • Visitor Center Store Management
  • Library

We are grateful for the support shown by our donors.  That support helps us continue our work to support Calaveras Big Trees State Park and all its programs. There are many ways you can help …

Make a single contribution

Use your credit/debit card online

… or by send your donation via mail:

PO Box 1196
Arnold, CA  95223

Recognize family or friends with a special gift

Would you like to make a donation to CBTA in memory of a special person? In honor or tribute to someone you love? CLICK HERE to make a commemorative donation.

Make a gift of stock or other real property

Decrease your tax liability without impacting your cash flow. Contact the CBTA office to make a gift that is easy on you and meets your philanthropic goals.

Make a planned gift

Did you know there are creative ways to support the Calaveras Big Trees State Park? Ways in which Calaveras Big Trees Association (CBTA), you and your loved ones all benefit at the same time? Such giving techniques are called “planned gifts”, because with thoughtful planning, you create win-win solutions for you and CBTA.  We will work with you to create a planned giving opportunity to help you meet your financial goals, while making a significant contribution to fund vital programs.

Please contact the CBTA office for more information.

Office Phone: 209-795-3840

Office email:

Volunteer at Calaveras Big Trees State Park by becoming a docent

Contact Wendy Harrison @ or call 209-795-7980 at the Park to learn how you can get involved.

Support CBTA through things you already do:



CBTA is proud to announce our partnership with SaveMart Supermarkets & Lucky Stores and their S.H.A.R.E.S. program. When you use your S.H.A.R.E.S. card please present before check out and the checker will swipe your card. S.H.A.R.E.S. will track the dollar amount spent by CBTA members and then, quarterly, will send CBTA a check for 3% of that amount. This ongoing Fundraising Event will help support our interpretative programs at the park.

Cards are available at the Visitor Center or call 209-795-3840 to have a card sent to you.

We appreciate your support of our efforts

CBTA was established as a 501(c)(3) nonprofit corporation in 1974. Therefore, your membership and contributions are tax deductible to the extent allowable by law.