WAKPOKER: Radio x (United Kingdom)

WAKPOKER Similar to a pool-and-weir system, except that each "dam" has a narrow slot in it near the channel wall. Recent studies suggest that navigation locks have a potential to be operated as vertical slot fishways to provide increased access for a range of biota, including poor swimmers. They are suitable for coarse fish as well as salmonids, and can be built large enough to be used by canoes. Both the weir and salmon ladder are there today and many subsequent salmon ladders built in Scotland were inspired by it. A version was patented in 1837 by Richard McFarlan of Bathurst, New Brunswick, Canada, who designed a fishway to bypass a dam at his water-powered lumber mill. At fixed intervals, the gate is closed, and water from the upper level fills the collecting pool and an inclined shaft, lifting the fish up to the upstream level. This innovative technology was developed by the company Fishcon.|Playoff dalam NASCAR