Hi
I live on
San Juan Island, have for 26 years. What you want for the
current is a booklet called Washburns. The book itself is about $20. than you need another smaller yearly book that cost around $6.. The large book is page after page of currents, their direction and velocity. The smaller book you look up the date and the hour and it gives you the corresponding page to see what is happening right now. It is what all sailors use when sailing the san juans.