California water managers have ended mandatory boat inspections for golden mussels at Lake Oroville, a major reservoir, based on a new risk assessment that says the cold, nutrient-poor waters reduce the threat. Experts are divided, with some warning the move increases the risk of spreading the invasive species to other lakes via boats.
- The Department of Water Resources ended inspections and decontamination at Lake Oroville and nearby reservoirs, saving $6.5 million annually. - The decision follows a risk assessment that found the mussels cannot reproduce in deep, cold water, but experts note adult mussels can survive cold and hitch rides on boats.
- Invasive species have already caused emergencies in San Joaquin and Kern Counties, clogging infrastructure. - Other Northern California lakes, including Folsom and Tahoe, will continue their inspection programs.
The state now relies on boaters to voluntarily clean and dry their vessels, but critics say this is insufficient to prevent a wider infestation.