Become a Member or Donate.


Earlier this month, our beloved state park was impacted by wildfire for the second time in three years. The Glass Fire burned approximately 75% of Sugarloaf Ridge State Park, impacting trail infrastructure and the historic Red Barn. 

With the support of our community and partners, Sugarloaf Ridge State Park will recover and safely reopen to the public. 


Annual Pass – $49

Oak Membership – $100

Big Leaf Maple Membership – $250

Sequoia Membership – $500

Membership fees over $100 are tax-deductible, Federal EIN# 94-3136500.

Total Amount: $0.00

Annual Pass

At only $49, the Annual Pass is a great value. It is valid for passenger vehicle or motorcycle entry at Sugarloaf Ridge State Park and Jack London State Park. Pass holders get $10 off non-reservation camping during off-peak times.

Not valid for camping, extra vehicle fees, other supplemental fees. Park admittance is subject to available space. No commercial use. 

Oak Membership – $100

Annual Pass plus 50% off organized hikes (Excluding Fireworks Hike, Brunch on Bald, and Headwaters to Headwaters Hike).

Big Leaf Maple Membership – $250

Oak level benefits plus free 2 night Glamping Package, which includes a campsite, free tent rental, and tent set up.
(Choice of 4 or 6 person Marmot tent) and a S’mores kit (firewood and all the S’mores fixings).
Note: Glamping package available Sunday – Thursday nights during busy season and any day of the week Nov. – Feb. Holidays excluded.

Sequoia Membership – $500

Big Leaf Maple level benefits plus an invitation to an annual member appreciation event.

NOTE: You may use your email receipt to get into the park until your annual pass arrives in the mail.


Camp Butler Sunset


Donations support park operations that maintain the park’s beauty, accessibility, and amenities.


Designated Giving Options

 North Bay Black Bear Collaborative

Black bears have moved into the Mayacamas and are now our neighbors. Join us in supporting a study of these powerful and majestic creatures. How many are here? Where did they move from? How can we keep them wild and in our valley? Assist us in answering these questions by helping us fund the Black Bear Collaborative, enabling us to study the bears and educate the populace to keep the bears wild.

See some videos on our facebook page.  


Historical Ecology Research

As a result of the New Year’s Eve Storm of 2005-2006, a paleobotanical discovery was made within Sugarloaf Ridge State Park, on the headwaters of Sonoma Creek. The discovery provides an important perspective on the forests of the Mayacamas Mountains during the Late Pleistocene. Numerous specimens of partially carbonized wood were recovered, eroding from a deeply buried deposit.  

The six pine cones that were found on Sonoma Creek are thought to have significance in a world struggling with a changing climate. Future efforts to better date the six cones and to establish their genetic history are called for.  Please support this effort – costs to date the cones, genetic research and manage the project are approximately $5,000.  More info here: Pine Project Overview

Ecology Research

Your support will be used to deploy, maintain and monitor our very popular ‘critter-cams’.  The cameras have allowed us to track plant and animal recovery from the fires.  Our 16 cameras in this volunteer-led program have provided the best data ever on the creatures that inhabit this wild and wonderful place.  We are seeking funding to support our staff, replace old equipment and hire an intern to perform further analysis.  Donate $250 to sponsor a camera!  We will send you the best photos from your camera.

Animal Research Budget
Item Cost Notes
Equipment $1,500 Replace 1/3 of cameras, plus locks, etc.
Software $200
Staff Time $5,000 manage volunteers, meet with research partners, plan data analysis
Summer Intern $5,000 10-week intern to analyze data and compile findings.
Total $11,700

ParksRx and Outreach Fitness Programs

We operate one of the SF Bay Area’s most successful and vibrant ParksRx program, which aims to help improve the health and well-being of Sonoma County residents through regular exercise in Sonoma County parks and on Sonoma County trails. Our events attracting 1000’s of attendees per year.

To keep this program going, we need to raise $15,000 per annually.  To expand to a multiagency county-wide program would require an additional $30,000.



Other Ways to Give


This year those age 70 and older may want to consider making a meaningful, tax-efficient gift to Sonoma Ecology Center using funds from their traditional or Roth IRA. With this way of giving you can:

  • Make tax-free gifts each year from your IRA withdrawals by having a portion transferred directly to SEC (up to $100,000 per year for an individual; $200,000 per couple with separate IRAs).
  • Use your Required Minimum Distribution for you gift to avoid taxes on the transfer of funds.
  • Avoid increasing your adjusted gross income and potentially subjecting your Social Security income to a higher level of taxation by giving directly from your IRA.
  • Provide a generous gift to SEC.

Please contact if we can provide more information to you or your advisors.

How to Donate Stock

Each stock gift we handle strengthens our programmatic work while providing tax benefits for supporters.

Here are step-by-step instructions to help you take advantage of this gift planning opportunity:

Give your broker the following information to transfer a gift of stock to the Sonoma Ecology Center:

  1. The Sonoma Ecology Center’s brokerage account is with Charles Schwab Co. Inc.
  2. The Sonoma Ecology Center’s account number is 5655-2785.

Either you or your broker must contact us via email at or call 707-996-0712 ext. 103 with the name of the stock and the number of shares being transferred. This ensures the gift is properly credited and acknowledged.

When SEC receives a stock gift, our policy is to sell the stock as near as possible to the date of the gift.

If you have questions or if we can assist you in making a gift of stock, please contact