(Grass Valley, CA. July 30, 2025) You’ve likely been hearing about the highly invasive golden mussel that is threatening lakes across California. But don’t forget—quagga and zebra mussels (QZ) remain a serious and growing threat to California’s lakes, rivers, and reservoirs.

These aquatic invaders wreak havoc on ecosystems, clog vital water infrastructure, and can cost millions in damage control and maintenance. The Nevada Irrigation District (NID) is calling on all non-motorized watercraft users -- kayakers, canoers, paddleboarders -- to take simple but vital actions to prevent their spread.

After using your craft in any freshwater or brackish system, remember to:

1. CLEAN your watercraft, paddles, and all gear that has come in contact with the water.
2. DRAIN all water from your vessel and any compartments.
3. DRY everything thoroughly before using your craft in a new location.

Special Reminders:

• Inspect and clean all components of your craft, including rudders, skegs, and bungee cords
• Inflatable crafts must be completely dry before being rolled and stored
• Allow at least 5-7 days of drying time in warm, dry weather or longer in cool or humid condition

“Stopping the spread of quagga and zebra mussels starts with you. Every paddler plays a critical role in protecting the waters we all enjoy.” said Sierra Monroe, NID Hydroelectric Compliance Technician. “If we do nothing, we risk everything, from the survival of native aquatic species to the reliability of our water supplies.”

To learn more and access prevention guidelines, visit: https://www.nidwater.com/quagga-and-zebra-mussel-prevention-and-monitoring-program