Bureau of Reclamation: This map shows where invasive mussels have infested or been detected in our reservoirs or facilities

This map shows where invasive mussels have infested or been detected in our reservoirs or facilities #InvasiveSpecies pic.twitter.com/OfLRA9J8Px

— Bureau of Reclamation (@usbr) February 24, 2015

More invasive species coverage here.