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
Alman Marsh Kiosk Refurbished
Kiosk next to Adobe Creek in Alman Marsh has been refurbished. Work crew came a week ago to clean out the insect homes and spider webs and then we put in new windows and then it got several coats of Rosewood Oil and Arborcoat to give it a fresh clean look. This would...
Mowing of Pickleweed at Shollenberger Oct 14-18.
The Shollenberger Marsh Management, Maintenance and Monitoring Plan was approved by USFWS in 2014 and requires annual maintenance of pickleweed in the Shollenberger dredge disposal site. This maintenance is to ensure the safety of the Salt Marsh Harvest Mouse during...
Monthly Bird Survey at Ellis Creek: September 2019
Thursday, September 19, was the bimonthly bird survey at Ellis Creek for the Petaluma Wetlands Alliance (PWA). The sun rising over the wetlands at 7 AM was a sight to behold! The group observed no less than five Yellow Warblers along the walk, including this one lit...
Author Presentation of Petaluma Wetlands Field Guide at Copperfield’s Books in Petaluma
Friday September 27 at 7pm Copperfield's Book Store, Petaluma Copperfields flyer The Petaluma Wetlands Field Guide identifies and describes 200 common species of plants and animals observable from the Petaluma Wetlands public trails with beautiful photos of each...
Monthly Bird Survey at Shollenberger: August 2019
Tuesday, August 20, was the bimonthly bird survey at Shollenberger Park. The team set out at 7 AM into a cool and cloudy morning. One of the first birds spotted was this Common Gallinule with its brightly colored shield, bill, and legs. Though this species is easier...
AQUS CAFE book signing and presentation of Field Guide
Marian Parker and John Shribbs will be at Aqus Cafe Tues August 27th at 7 pm to present their new Petaluma Wetlands Field Guide and sign books. Come join us for a fun event. Books will be on sale at $21.99.
How You Can Help Right Now
