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Channelised Drainage (Channelised System (Water pressure drops (As surface…
Channelised Drainage
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Efficient channels
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Variety of shapes (rothlisberger, h-, n-)
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Channel types
R channels
Semi-circular - if always full (Rothlisberger, 1972)
H channels
Broader, lower - (Hooke, 1990)
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N-channels
Eroded into bedrock (Nye, 1973)
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Soft sed channels
Broader vs bedrock (Alley, 1989)
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Typical channels
H-channels
Most channels @ margins = broad, wide & low
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Nye-channels
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To erode bedrock, need sufficient force