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Invasive Mussels Found in Alameda Lake!
22 Sep
Summary
- Highly invasive golden mussels detected at Lake Del Valle.
- Boats launching at the lake face a mandatory 30-day quarantine.
- Mussels threaten local water sources and ecosystems statewide.
Highly invasive golden mussels have been detected at Lake Del Valle in Alameda County, initiating a quarantine for boats. The East Bay Regional Park District confirmed the presence of these mussels, which are native to coastal Asia and South America. Their ability to thrive in water with lower calcium levels presents a substantial risk to local water sources and ecosystems.
Effective immediately, boats launching from Lake Del Valle will undergo a 30-day quarantine period. This measure is designed to prevent further spread of the invasive species. Golden mussels were first identified in North America in 2024 at the Port of Stockton, believed to have arrived via an international ship.
Their proliferation has already led to reservoir closures and emergency declarations in other California counties. Contra Loma Reservoir in Antioch is another East Bay Park District waterbody under similar quarantine rules. All watercraft, including kayaks and canoes, are subject to inspection to detect invasive mussels.
