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About Us



The 100th Meridian Initiative is a cooperative effort between local, state, provincial, regional, tribal, and federal agencies to prevent the westward spread of zebra/quagga mussels and other aquatic nuisance species in North America. The Columbia River Basin Team is comprised of 100th Meridian Initiative partners, primarily in Washington, Oregon, Montana, Idaho, Montana, Wyoming, and British Columbia.


Columbia River Basin (CRB) Team

Please save the date for the next meeting of the 100th Meridian CRB AIS Team, scheduled for Tuesday and Wednesday, June 4 & 5, 2024, at the Residence Inn Missoula Downtown in Missoula, MT. We anticipate starting at 10am on 06/04 and ending ~ 3pm on 06/05.


For future meeting questions, contact Amy Stark:

Meeting Minutes - Past CRB Meetings​

Missouri River Basin Team

Previous Meetings

Bill Zook Lewis & Clark Evaluation Presentation


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