Opportunities From: Volunteers for Outdoor Colorado

Where You’ll Be:

Centennial Gardens is a thoughtfully designed urban garden space near downtown Denver that blends horticulture, history, and community use. With a mix of garden beds and open space, it offers a welcoming and engaging environment for volunteers.

What You’ll Do:

This opportunity is in partnership with Civic Center Conservancy  (CCC) and their volunteer program, SPARKLES, which continues volunteerism efforts during Civic Center Park renovations with horticulture support for Denver Parks & Recreation in various parks around downtown.

Volunteers ages 12+ will help with horticulture tasks like planting flowers, mulching, debris clean up, native and annual bed care, and weeding!

Why It Matters:

As a volunteer, you will play a crucial role in maintaining Denver’s urban green spaces, making them more beautiful, welcoming, and ecologically healthy. Regular care supports plant health, improves habitat for pollinators and wildlife, and ensures these spaces remain enjoyable for the many people who use them.

Eligibility Requirements: 

Ages 12+   

Youth under 18 must be accompanied by an adult aged 21 or older.

Project Difficulty:

This project is considered easy, please check our difficulty rating criteria here for more details.

Physical Considerations: Volunteers can expect to be bending down and kneeling. There is significant sun exposure in this location. 

Access Factors: 

Vehicle Access: No vehicle restrictions - 2WD accessible

Other Notes: This project will be led on-site by Civic Center Conservancy staff.

If you like to volunteer on weekdays, you can view similar projects here.

Where You’ll Be: 

Boulder's Open Space and Mountain Parks form a buffer around the city, helping to establish its own identity from neighboring communities. This project will take place in the Boulder Valley Ranch area, which offers access to many popular trails, including Sage, Eagle, Cobalt, and Left Hand.

What You'll Do:

Volunteers will help with the construction of the Hidden Valley Trail reroute. Work will include clearing vegetation to make way for the trail, digging and removing dirt to reach the proper trail level, and fine-tuning to create a smooth trail tread and a surface that drains properly.

Please bring your own lunch for the day.

Why It Matters:

This trail reroute is part of a larger trail improvement plan for the western Boulder Valley Ranch area north of the city. These projects aim to improve outdoor experiences, increase trail sustainability, and increase bicycling trail access while protecting wildlife and plant habitats in the area.

Eligibility Requirements:

Ages 14+ 

Youth under 16 must be accompanied by an adult aged 21 or older.

Physical Difficulty:

This project includes tasks at varying levels of difficulty, from easy to moderate to difficult. Please check our difficulty rating criteria here for more details.

General physical considerations for participating on this project (Some or all may apply): moderate lifting and tool use; digging, shoveling, moving soil and rocks; repetitive bending, lifting, and walking; may require hiking to access work site while carrying tools; you can expect to bend, pick objects up, move rocks, carry tools, swing heavy tools, dig, and stretch.

Access Factors:

Vehicle Access: 2WD accessible

Other Notes: There will be about a half-mile hike from the parking lot to the work site. The worksite is sun-exposed.

Where You’ll Be: 

Boulder's Open Space and Mountain Parks form a buffer around the city, helping to establish its own identity from neighboring communities. This project will take place in the Boulder Valley Ranch area, which offers access to many popular trails, including Sage, Eagle, Cobalt, and Left Hand.

What You'll Do:

Volunteers will help with the construction of the Hidden Valley Trail reroute. Work will include clearing vegetation to make way for the trail, digging and removing dirt to reach the proper trail level, and fine-tuning to create a smooth trail tread and a surface that drains properly.

Please bring your own lunch for the day.

Why It Matters:

This trail reroute is part of a larger trail improvement plan for the western Boulder Valley Ranch area north of the city. These projects aim to improve outdoor experiences, increase trail sustainability, and increase bicycling trail access while protecting wildlife and plant habitats in the area.

Eligibility Requirements:

Ages 14+ 

Youth under 16 must be accompanied by an adult aged 21 or older.

Physical Difficulty:

This project includes tasks at varying levels of difficulty, from easy to moderate to difficult. Please check our difficulty rating criteria here for more details.

General physical considerations for participating on this project (Some or all may apply): moderate lifting and tool use; digging, shoveling, moving soil and rocks; repetitive bending, lifting, and walking; may require hiking to access work site while carrying tools; you can expect to bend, pick objects up, move rocks, carry tools, swing heavy tools, dig, and stretch.

Access Factors:

Vehicle Access: 2WD accessible

Other Notes: There will be about a half-mile hike from the parking lot to the work site. The worksite is sun-exposed.

Where You'll Be:

Pence Park is a beautiful, quiet respite just thirty minutes from Denver. Pence Park's wide variety of trails has become a popular destination for hikers and bikers along the Front Range. Mountain bikers flock from miles around to ride from Lair O' the Bear to Pence Park, a scenic 13 miles. Pence Park's unique array of wildlife includes bald eagles, Mexican spotted owls, the Preble's jumping mouse, and the Townsend's big-eared bat.

What You'll Do:

Volunteers will help with much-needed trail maintenance at the park, just a short trip from the Denver metro area. Tasks may include clearing the trail corridor by trimming overgrown vegetation to keep paths open and safe, maintaining drainage by removing debris and improving water flow to prevent erosion, and repairing the tread to smooth and reinforce the trail surface for a safer and more durable path. This is a great opportunity for new volunteers and anyone interested in learning more about trail restoration while enjoying a beautiful outdoor setting.

Why It Matters:

Trail maintenance matters from an ecological and environmental standpoint because it ensures a safe and sustainable route for people to use, which keeps the surrounding habitat safe and minimizes the human impacts on flora and fauna, especially in high-use areas like Pence Park.

Eligibility Requirements: Ages 16+

Project Difficulty:

This project is considered moderate to difficult; please check our difficulty rating criteria here for more details.

Physical Considerations:

Reaching the worksite requires a 1.1-mile hike with about 750 feet of elevation gain on a steep, rocky trail. Please be prepared for a moderate/strenuous hike before beginning the workday. You can expect to bend down, pick up objects, move rocks, carry tools, swing heavy tools, dig, and stretch.

Access Factors: 

Vehicle Access: No vehicle restrictions – 2WD accessible  Other Notes: Cell service may be spotty in this area. Port-a-potties will be available at the trailhead only; once on the trail, volunteers should follow Leave No Trace principles.

Where You’ll Be:  

You’ll be working at 1st Ave Pond, a quiet, behind the scenes natural area in the southernmost part of the City of Greeley. This site borders a small stretch of the South Platte River corridor and is currently closed to public access, allowing it to function as an important refuge for wildlife. With no formal trails or recreational use, the area provides undisturbed habitat for birds, small mammals, and other species that rely on intact riparian and wetland ecosystems.

What You’ll Do: 

Volunteers will help remove 10 to 15 foot Russian olive trees, an invasive species that threatens native vegetation and wildlife habitat along the South Platte River corridor. This project includes roles for both chainsaw certified volunteers and general volunteers. Chainsaw certified volunteers will cut Russian olive trees into manageable sections. Other volunteers will assist by moving cut material to a chipper staging area operated by the Forestry Division.

Only certified sawyers are permitted to operate chainsaws.

This project requires five B certified Chainsaw Sawyers. A certified Sawyers may participate under the supervision of B Sawyers.

If you are certified, please note this in the comments section during registration and email your certificate to the project manager.

All sawyers must hold a current First Aid and CPR certification in order to operate a chainsaw.

Interested in getting certified? Visit our Training Calendar to view upcoming training opportunities.

Why It Matters: 

Russian olive is designated as a List B species under the Colorado Noxious Weed Act, requiring active management to prevent its spread. These invasive trees displace native plants and wildlife and can consume up to 75 gallons of water per day, water that is critical for sustaining wetlands and the species that depend on them. Removing Russian olive at 1st Ave Pond helps restore native habitat, protect limited water resources, and strengthen the health of the South Platte River corridor. 

Eligibility Requirements: 

Ages 18+  

Project Difficulty: 

This project is considered difficult. Please check our difficulty rating criteria here for more details.  

Physical Considerations:

Expect physically demanding work, including moving heavy plant materials and working on uneven terrain. For volunteers not operating chainsaws, there may be lifting cut plant debris overhead at times, carrying logs, piling plant debris in one place, and using loppers. 

Access Factors:   

Vehicle Access: No vehicle restrictions – 2WD accessible

If you enjoy chainsaw projects, either as a certified sawyer or a support volunteer, you can view similar projects here.

Where You’ll Be:  

You’ll be working at 1st Ave Pond, a quiet, behind the scenes natural area in the southernmost part of the City of Greeley. This site borders a small stretch of the South Platte River corridor and is currently closed to public access, allowing it to function as an important refuge for wildlife. With no formal trails or recreational use, the area provides undisturbed habitat for birds, small mammals, and other species that rely on intact riparian and wetland ecosystems.

What You’ll Do: 

Volunteers will help remove 10 to 15 foot Russian olive trees, an invasive species that threatens native vegetation and wildlife habitat along the South Platte River corridor. This project includes roles for both chainsaw certified volunteers and general volunteers. Chainsaw certified volunteers will cut Russian olive trees into manageable sections. Other volunteers will assist by moving cut material to a chipper staging area operated by the Forestry Division.

Only certified sawyers are permitted to operate chainsaws.

This project requires five B certified Chainsaw Sawyers. A certified Sawyers may participate under the supervision of B Sawyers.

If you are certified, please note this in the comments section during registration and email your certificate to the project manager.

All sawyers must hold a current First Aid and CPR certification in order to operate a chainsaw.

Interested in getting certified? Visit our Training Calendar to view upcoming training opportunities.

Why It Matters: 

Russian olive is designated as a List B species under the Colorado Noxious Weed Act, requiring active management to prevent its spread. These invasive trees displace native plants and wildlife and can consume up to 75 gallons of water per day, water that is critical for sustaining wetlands and the species that depend on them. Removing Russian olive at 1st Ave Pond helps restore native habitat, protect limited water resources, and strengthen the health of the South Platte River corridor. 

Eligibility Requirements: 

Ages 18+  

Project Difficulty: 

This project is considered difficult. Please check our difficulty rating criteria here for more details.  

Physical Considerations:

Expect physically demanding work, including moving heavy plant materials and working on uneven terrain. For volunteers not operating chainsaws, there may be lifting cut plant debris overhead at times, carrying logs, piling plant debris in one place, and using loppers. 

Access Factors:   

Vehicle Access: No vehicle restrictions – 2WD accessible

If you enjoy chainsaw projects, either as a certified sawyer or a support volunteer, you can view similar projects here.