Boating within the city limit of Camarillo is pretty difficult. There are few navigable waterways. With perhaps a few exceptions, all of the lakes and ponds in town are man-made. The Rivers are small and dry much of the year. In the winter when they are flowing, they become treacherous because of high speeds and lots of debris.
If you enjoy boating, your best bet is to head out of town, either to the Beaches or to some of the major Lakes near by. Or, if you enjoy model boating, Camarillo Regional Park has a model boat launch and pond for hobbyists.
Camarillians sometimes travel to get to lakes where they can enjoy the water. Here are some that people like.
BruceThomas offers some of his boating insights at these personal blog pages:
Bruce Thomas' Blog River map, driving directions, printed & online guidebooks for kayaking, rafting, innertubing & canoeing.
Bruce Thomas' Links for the Santa Clara River A Delicious.com collection of links to resources for the Santa Clara River watershed.