Exotic and Invasive Species

Help Halt Golden Mussel Invasion

In October 2024, the California Department of Water Resources discovered non-native, highly-invasive golden mussels in the Bay-Delta near Stockton, California. Once established, golden mussels can spread rapidly, significantly damaging natural ecosystems, water infrastructure, agriculture, and economies. To combat this, we are asking the public to clean, drain and dry watercraft before and after launch, and to contact the waterbody they plan to visit before heading out.

Aquatic Invasive Species

All watercraft, including motorized and non-motorized vessels, must be inspected for aquatic invasive species and decontaminated prior to entering Lake Tahoe. Watercraft enthusiasts play an important role in preventing harmful aquatic invasive species from entering Lake Tahoe and the basin's other lakes and streams. Visit the Tahoe Boat Inspections website for more information on mandatory inspections and decontaminations. 

Western Pearlshell Mussels

Did you know there are native freshwater mussels in the Tahoe Basin? The Western Pearlshell is a freshwater mussel that should not be confused with aquatic invasive mussels. Western Pearlshell are extremely rare and have an average lifespan of 60 to 70 years with some individuals living more than one hundred years, making them one of the longest-lived animal species on Earth! If you find Western Pearlshell, please do not handle or disturb them due to their sensitivity and rarity. Follow the link to learn more about this important native species.