Tides and Currents in the NorthwestThe following is taken from a handout KIX uses when teaching tides and currents.
Goals and Objectives - understand the reason why currents occur and how to handle them as a kayaker. Learn to predict tides and currents and to understand the hydrolics of local currents.
Tides - Vertical movement of water due to the rotation of the
earth and gravitational pull of the moon (and other factors
Kayakers paddle at 3 knots when on an average tour.
In this area, current floods eastwardly into the Puget Sound region through the Straits of Juan de Fuca, and down the inside fo Vancouver Island. The ebb is the opposite! (See charts and whiteboard).
How tides and currents affect the kayaker:Trip planning - easiest to go with the current
Hydrolics - learning to enter and exit eddies (eddies are areas behind rocks and outcroppings where the flow is going the opposite way of the main current - it is filling a vacuum).
(See whiteboard drawing of a rock in river). - learning to use large eddies behind islands and friction near shore to your advantage
How to determine tides and currents:
Primary and secondary current stations.
Question for the group - on a certain day should we paddle from Anacortes to Friday Harbor or the opposite? Notice we have to read primary stations from both San Juan Channel and Rosario Strait.