Pulling Together at Cosumnes River Preserve

On a bright Sacramento County morning, BLM staff joined partners from American Conservation Experience (ACE) for a hands-on day at the Cosumnes River Preserve. The mission: rescue one of California’s most valuable landscapes from the threat of invasive, oxygen depleting hyacinth and primrose.

The Cosumnes River Preserve spans more than 50,000 acres of wetlands, riparian forests, grasslands, and farmland. Managed by BLM California in partnership with six other land-owning organizations, the preserve is a haven for migratory birds along the Pacific Flyway and a critical refuge for countless native species. Yet, even in such a vibrant setting, invasive plants pose a serious challenge.

Teams focused their efforts on removing water hyacinth and water primrose, two fast-spreading aquatic weeds that can quickly take over shallow wetlands and shorelines. Once established, they crowd out native plants, limit food and habitat for fish and wildlife, and reduce overall biodiversity. “These plants may look harmless,” said Stacie Smith, BLM California’s Aquatics Lead, “but if left unchecked, they form dense mats that choke waterways, disrupt the balance of the ecosystem, and even make it hard for people to paddle and enjoy the preserve. Clearing them helps restore habitat and ensures visitors can better access and explore larger parts of the Preserve.”

The day’s work was demanding but rewarding. Staff and volunteers pulled invasive plants by hand and removed them from sensitive wetland areas. This immediate action supports native vegetation and gives room for wetland habitats to recover. Every wheelbarrow filled was a step toward restoring healthier conditions for the diverse plants and animals that depend on the preserve.

Partnership was key. BLM California works closely with ACE and other preserve partners to ensure that invasive species management is strategic and effective. The collaboration combines staff expertise, volunteer power, and a shared commitment to long-term stewardship. “No single group can tackle this challenge alone,” a partner noted. “It takes all of us working together to protect the ecological integrity of the Cosumnes River Preserve.”

By the end of the day, participants left tired but inspired, knowing their efforts directly contributed to preserving a unique California landscape. “It’s been really inspiring to see how the community has had an active role in mitigating the spread — from decontaminating their boats to participating in volunteer removal efforts like this year’s upcoming National Public Lands Day on September 27,” said Leigh Karp, BLM California’s Partnership, Volunteer, and Youth Coordinator. The day’s work at Cosumnes was a reminder that restoring healthy wetlands takes both dedicated partners and an engaged community.

Want to help? Find a National Public Lands Day event near you: https://www.neefusa.org/npld-event-search