Riffle Diagram
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Dickson Brook Restoration, Fundy National Park

The original plank walls of the channelized stream then wire gabion baskets all collapsed as the bed eroded in the narrowed channel. By 2008 they had been replaced with a natural width pool and riffle stepped channel throughout the main stem of the river by the Fundy Park "stream team" supervised by Warden Jane Watts (see Courses and Materials for a riffle construction video). The golf course course portion of the Dickson Brook project was completed in 2009. For further information contact Jane.Watts@pc.gc.ca .

first try: a wooden stream 1950's

second try: a wire basket stream 1990's

 

last try: natural steam dimensions with a reduced gradient

Okanagan River Dyke Setback and Re-Meandering

The Okanagan River was dyked and straightened over 50 years ago, dramatically reducing the spawning reaches for Columbia River sockeye and chinook salmon. A design to set back the dykes in a kilometer long pilot reach, re-connect the meanders and improve the main stem spawning velocities was developed with the Okanagan First Nations and Mould Engineering (Kelowna BC). The setback dyke was completed in 2008 and the phase one channel re-construction in 2009 by Mould Engineering, Kelowna ( http://www.mouldengineering.com/ ). For further information contact Karilyn Long Alex, Okanagan First Nations Fisheries (klong@sylix.org).

 

re-constructed entrance to the old Lougheed meander

improved spawning platform constructed in the main stem

air photo: Kevin Dunn, river photos: C. Rivard-Sirois