Ecan has just released the Canterbury Water Strategy ). You can get a free CD-ROM with a 145 page Acrobat file on it. There is nothing too threatening for canoeing, unless developers target the Hurunui above the Mandamus River confluence, and the Rangitata above Klondyke. Tha Clarence is another river to watch out for. The guts is that all the small Canterbury rivers are over allocated and future water for irrigation will have to come from "harvesting" the bigger rivers and storing water.