|Westward Spread of Quagga and Zebra Mussels
Quagga and zebra mussels are among the most economically and ecologically damaging aquatic invasive species and are spreading into the West. They are a critical issue for western entities. Quagga mussels were discovered in Lake Mead in 2007, and their numbers have grown dramatically since then. To address the spread of these mussels into the West, the Western Regional Panel of the Aquatic Nuisance Species Task Force (ANSTF) developed the Quagga-Zebra Mussel Action Plan for Western U.S. Waters (QZAP). QZAP was approved by the ANSTF in 2009 and was adopted as Department of the Interior's roadmap for addressing the western spread of quagga and zebra mussels. This page includes links to QZAP, projects that support QZAP priorities, and other information related to the westward spread of these invasive mussels.