About Us


2020 Annual Meeting

The 2020 Annual Meeting will held in Anchorage, Alaska. For more information emailĀ mason@stopais.org


Threats to the West Brochure is now available.


The Quagga/Zebra Mussel Action Plan (QZAP) summarizes current strategies to address the invasion of zebra and quagga mussels in the West.

Tsunami Marine Debris

Learn about the regional coordinated response to preventing the introduction of marine invasive species associated with tsunami marine debris.

Western Regional Panel


Western Region

Area Covered by WRP

The Western Regional Panel on Aquatic Nuisance Species was formed in 1997 to help limit the introduction, spread and impacts of aquatic nuisance species into the Western Region of North America. This panel of public and private entities was formed by a provision in the National Invasive Species Act of 1996 (P.L. 101-636), the amendment to the 1990 Act. The spread of nonindigenous aquatic species is causing significant economic and ecological problems throughout North America. Invasive, non-native species are one of the leading threats to the ecological integrity of forests, grasslands, and waterways. Recognizing the threat to western aquatic ecosystems and water delivery systems caused by nuisance exotics has raised concerns with representatives from State, Provincial, and Federal agencies as well as Private water interests. The purpose of these pages is to provide an information network for the various interests involved with management of aquatic nuisance species as well as to educate the public.

The public and private sectors working together to protect western water resources from aquatic nuisance species.

Stop Aquatic Hitchhikers!

Have you seen anything unusual?
If so, we want to hear from you.

An Aquatic Nuisance Species reporting system sponsored by the U.S. Geological Survey is available to report ANS online, or may call your state wildlife agency directly for questions and reports.


This web site is maintained by the U.S. Fish & Wildlife Service under direction from the Western Regional Panel