Numerous federal, state, tribal and academic institutions are actively monitoring for zebra and quagga mussels (i.e., invasive mussels) and other nonnative species in a variety of ways. The information and maps contained within this site are intended to provide an up to date synopsis of who is monitoring for what species, where, how and when. This information can help managers and researchers to determine if the current level of monitoring is sufficient, or whether efforts should be redirected to better fulfill various needs. 


Quagga and Zebra Mussel Monitoring in the Pacific Northwest States and Canadian Provinces


Click on the map below to access the online database:




Quagga/Zebra Mussel Sampling Methods Used by Western Organizations

Link to sampling methods

Procedures for conducting underwater searches for invasive mussels (Dreissena sp.) (US Dept Interior, US Geological Survey) 2010


Dreissenid Mussel Laboratories

Link to information on laboratories in the United States and Canada that process dreissenid samples


Quagga/Zebra Mussel Field and Laboratory Protocols


Amistad National Recreation Area


Bureau of Reclamation



Glen Canyon National Recreation Area





Research Associated with Zebra/Quagga Mussel Sampling