A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract: In late 1967, the British Columbia Hydro and Power Authority closed W.A.C. Bennett Dam, initiating the regulation of Peace River, a large (mean flow 1135 m3s–1 at the dam), northward flowing, boreal river. The dam, constructed in a water gap in the main ridge of the Rocky Mountains, controls 24% of the drainage basin area, but half of the basin runoff. Peace Canyon Dam has since been constructed 20.5 km downstream from Bennett Dam. Most of the sediment load of the river enters downstream of the dams. Hence, regulation has significantly affected only one of the three major governing conditions (water flow, sediment influx, and topographic gradient) of alluvial river regime. The effects of regulation are still evident, 1100 km downstream at Peace Point and in the Peace–Athabasca delta beyond. A gravel‐to‐sand transition occurs in the river near Carcajou, 632 km below the dams, so that effects of regulation on contrasting substrates may be observed. This chapter introduces a series of studies documenting the consequent morphological changes in the river and changes in riparian vegetation throughout the course of the river to Peace Point.
Abstract: In late 1967, the British Columbia Hydro and Power Authority closed W.A.C. Bennett Dam, initiating the regulation of Peace River, a large (mean flow 1135 m3s–1 at the dam), northward flowing, boreal river. The dam, constructed in a water gap in the main ridge of the Rocky Mountains, controls 24% of the drainage basin area, but half of the basin runoff. Peace Canyon Dam has since been constructed 20.5 km downstream from Bennett Dam. Most of the sediment load of the river enters downstream of the dams. Hence, regulation has significantly affected only one of the three major governing conditions (water flow, sediment influx, and topographic gradient) of alluvial river regime. The effects of regulation are still evident, 1100 km downstream at Peace Point and in the Peace–Athabasca delta beyond. A gravel‐to‐sand transition occurs in the river near Carcajou, 632 km below the dams, so that effects of regulation on contrasting substrates may be observed. This chapter introduces a series of studies documenting the consequent morphological changes in the river and changes in riparian vegetation throughout the course of the river to Peace Point.
On Regulated Rivers
Church, Michael (editor)
2014-12-03
11 pages
Article/Chapter (Book)
Electronic Resource
English
Regulated rivers : research & management
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