The present Regulation implements the Lakes and Rivers Improvement Act (Chapter L. 4). The Regulation contains at the outside the definition of “channelize”, “dam” and “water crossing”. Approval is required to: a) construct or make improvements to a dam; b) construct a water crossing draining an area greater than five square kilometres; c) channelize a river or stream that may harmfully alter fish habitat or impede the movement of fish in a river, stream or lake; d) enclose or cover a length of