LAS VEGAS (KLAS) — The battle against invasive quagga mussels at Lake Mead is continuing and two more types of the mollusks have been detected — one in western Colorado and another rapidly expanding into Southern California.

Zebra mussels were found in two lakes in western Colorado, and in the river near the Colorado-Utah border, according to information posted Sept. 15 by Colorado Parks and Wildlife.

In California, golden mussels were first found near Sacramento a year ago. Now they have spread to Southern California lakes. They have been found at Silverwood Lake, just south of where Interstate 15 descends into San Bernardino, but not yet at Lake Arrowhead.

The golden mussels haven't made it to the Colorado River or Lake Mead yet, but water managers are worried that boats could spread

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