Zebra Mussels

TPWD Executive Order 12-003:
Zebra Mussels in the Elm Fork tributary of the Trinity River.

The Executive Director of the Texas Parks and Wildlife Department finds that zebraZebra Mussels mussels ("Dreissena polymorpha") present an immediate danger to aquatic species regulated by the department and hereby ORDERS the adoption of emergency rules to contain zebra mussels in all impounded and tributary waters of the Elm Fork of the Trinity River upstream from the Lewisville dam. The Executive Director authorizes the immediate submission of Notice of Emergency Rulemaking in the "Texas Register".

PDF FileExecutive Order No. 12-003
PDF FileNotice of Emergency Rulemaking
PDF FileZebra Mussels - Fact Sheet
External WebsiteZebra Mussels -
External WebsiteReport Zebra Mussels -
PDF FileZebra Mussels - Tri-Fold Brochure
PDF FileZebra Mussels - Wallet Card
PDF FileZebra Mussel Resource Document - Trinity River Basin, Texas