Lake Combie Association Quagga & Zebra Mussel Information   California Fish & Game site on Quagga and Zebra Mussels - site contains a wealth of information on where where they have been found in California and how to prevent spreading the mussels.  There are several training videos and courses on how to prevent spreading mussels.  The training video on mussels is available for check-out from the LCA Lending Library. Protect Your Waters - site sponsored by the US Fish & Wildlife Services and the Coast Guard.  To prevent spreading aquatic nuisance species, they advocate the following: Simple Procedure Remove any visible mud, plants, fish or animals before transporting equipment Eliminate water from equipment before transporting Clean and dry anything that came in contact with water (Boats, trailers, equipment, clothing, dogs, etc.) Never release See their site for more information. Tahoe Boat Inspections - If you are planning on bringing a boat to Tahoe, starting in 2010 there is a mandatory boat inspection and sticker program in effect.  Refer to this site to get details.