10 Lake Tahoe boats found with invasive Golden Mussels

Boat inspectors at Lake Tahoe identified ten vessels carrying invasive Golden Mussels during the 2026 boating season. The Tahoe Regional Planning Agency (TRPA) reported the interceptions as part of 5,200 total inspections conducted for the season. Officials state that the Golden Mussels present a danger to the regional water system.

The mussels were first detected in the Sacramento-San Joaquin Delta in 2024. That discovery led to stricter inspection standards for the area. TRPA notes that the species is highly invasive and continues to spread in waters ranging from San Diego to Sacramento.

Chris Kilian, the aquatic invasive species program manager at Tahoe Regional Water Quality Control Board, addressed the findings. He said the increase in interceptions was not unexpected given the rapid expansion of the species. Kilian stated that the discoveries underscore the importance of continued vigilance. He added that his team of trained inspectors is dedicated and meticulous.

Despite the interceptions, the majority of boats passed without issue. TRPA data shows that 70 percent of visiting boats arrived clean this year. That figure is up from 60 percent in previous years. The agency attributes the change to better behavior among boaters.

Thomas Boos, the aquatic invasive species prevention program manager at TRPA, emphasized the role of individual actions. He said arriving clean, draining, and drying is the most impactful step boaters can take. Boos expressed gratitude for the shift in behavior, which helps protect Lake Tahoe, Fallen Leaf Lake, and Echo Lake. He noted that these efforts also safeguard waterways across the United States.

The inspections covered the primary water access points in the region. The ten intercepted boats were processed according to agency protocols. The data reflects the current season's activity through the end of the boating period.