Protecting Our Wetlands
Preserving our futureDedicated to the stewardship, restoration, and expansion of wetlands and associated wildlife habitats by preserving our future through classroom and field education that inspires youngsters to become stewards of our wetlands.
Petaluma Wetlands Alliance
We support Shollenberger Park, Alman Marsh, Ellis Creek Wastewater Treatment property, and future wetland sites in the Petaluma River watershed. We work with local governments, environmental organizations, and other groups to educate the public about the ecology and value of wetlands.
Photography courtesy of Bob Dyer, Tim Fleming, Gerald Moore, Len Nelson, Thomas Reynolds and Ron Storey
About Petaluma Wetlands Alliance

What is PWA?
Petaluma Wetlands Alliance (PWA) was formed by a concerned group of citizens who banded together in the late 1990’s during the planning and construction of a new wastewater treatment plant in Petaluma, California. We work with schools, government agencies and environmental organizations to help preserve wetlands habitat.

What are Wetlands?
Wetlands are among the world’s most productive ecosystems, providing critical habitat for many plant and animal species. In essence, wetlands are the zones between the land and large bodies of water such as rivers, lakes, or oceans, where water tends to stand for prolonged periods of time. Swamps, marshes and bogs are all examples of wetlands.

How Can I Help?
We’re glad you asked! There are a number of ways you can support the PWA. Financial contributions are always welcome. Since we are a 501(c)(3) organization, your donation may be tax-deductible. If you like to meet and talk with people, check out our our docent program. Or, pick up a shovel and come help us remove invasive weeds as a volunteer.
Latest News
From the Editors at Petaluma Wetland Alliance
New Geology and Wetland Poster on PWA kiosk
A new Wetland Poster was attached to the parking lot kiosk. This is a special print of UV protected inks on an aluminum surface. Below is a new Geology of Petaluma Poster in the PWA Kiosk near the entrance. It is printed with UV protected inks on paper and then...
3 days of Earth Day Cleanup at Shollenberger Park Central Pond
Twelve people showed up today to help pick up the litter that came with the river dredging. PWA showed up in force as well as some FOPR folks and Sunrise Rotary. This is the first of a 3 day event. Again, like each of the previous days in the last cleanup we filled my...
Barn Owls under web cam at ECWRF have 5 eggs
On 3-22-21, Len Nelson recorded the nesting barn owl under the webcam at ECWRF changing position and 5 eggs came into view. We will be watching for hatching expected very soon.
How You Can Help Right Now
