Douglas J E Barnes has an upcoming event that I think you should consider checking out. I saw him speak at the 2012 Permaculture convention in Ottawa and have worked on a design team during a forest gardeningworkshop and I must say, I like his style, delivery and he seems to really know his stuff! Here's what he sent me for a synopsis. I'll be attending and hope to see you there!
"For those in Ontario, Canada, there will be a water-harvesting earthworks workshop in Tweed on July 13th and 14th. The cost is $200 CDN, and a list of area accommodations is available on request. More information is available at Earthworks Workshop