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With help from our supporters, Friends of Trione-Annadel is making significant strides!

Friends of Trione-Annadel, incorporated in 2017, is a 501c3 nonprofit dedicated to funding development and maintenance projects which enhance the value and accessibility of Trione-Annadel State Park. Why? Because we love this park! All of our board members are cyclists, runners, hikers, and nature lovers who volunteer their time to protect a community resource they use, appreciate and respect. Every project we engage in is planned and implemented in collaboration with Friends of Trione-Annadel's all-volunteer board of directors and the approval of California State Parks.


  • Installation of pedestrian traffic signs on Channel Drive: 2 signs guiding pedestrians to avoid bicycle or car collisions.
  • Purchased two new state park monument signs made of redwood engraved with a stone base to help increase public awareness of entering TASP land. The signs are located at the entrance to Rough-Go trail from Spring Lake and at the entrance from Lawndale Rd.
  • Provided transportation for every fourth grader in the Santa Rosa public schools to take a field trip to the park.

  • Organized stand up paddle board events and fly casting clinics at Lake Ilsanjo.


  • Upgraded and expanded all lighting in the Visitors Center to energy efficient LED fixtures.


  • Purchased chainsaw backpacks,  grip hoist, tree ladders, and Puller Bear tree/bush removers for the eradication of non-native plant species for use by volunteers and park maintenance staff.
  • Purchased a Kabota U17 excavator and flat-bed trailer for trail and road maintenance.
  • Provided a grant to Sonoma County Trails Council to be used for volunteer trail maintenance days in TASP.
  • Funded the rebuilding of the bridge at Spring Creek and Canyon trails.
  • Through a grant from the Empire Runners organization, purchased tools for park maintenance.
  • Purchased a waterproof chest to hold and protect supplies.
  • Purchased 2 new picnic tables.
  • Purchased fire fighting equipment.
  • Secured grant to purchase an all-terrain wheelchair to give visitors with disabilities the ability to access the trails in the park.


  • Purchased new uniforms for Park Volunteers. This includes vests, polo shirts, badges, hats, etc.
  • Funded the Volunteer Recognition dinner!


  • Funded a study to determine if Spotted Owls are present and living in Trione-Annadel State Park. The presence of Spotted Owls would affect the ability to use heavy equipment in the park for trail maintenance during the Spring and Summer.
  • Funded project submissions for 20 road and trail maintenance projects throughout the park. This included the hire of a Roads Engineer and Hydrologist to complete the development of several road and trail project improvement plans.
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