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14 Cards in this Set
- Front
- Back
Laminar Flow
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This is the horizontal movement of water without any disruptions.
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Turbulent Flow
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This is a series of erratic eddies with both vertical and horizontal movement.
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Eddies
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These are turbulence in the water.
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Hydraulic Radius
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The ratio of the cross sectional area of the channel and the length of the wetted perimeter. (HR = Area of water / Wetted Perimeter)
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Wetted Perimeter
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The proportion of the channel perimeter that is in contact with the water. (WP = Side 1 + Side 2 + Side 3)
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Thalweg
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The profile of a river from source to mouth.
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Rejuvenation
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When a river restores itself to a former state.
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Base Level
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The level that a river normally flows at.
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Kick Points (Rejuvenation)
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This is a change in the river profile creating a step or sometimes creating a waterfall.
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River Terrace (Rejuvenation)
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This is when a river abandons a floodplain and down cuts creating a step of land.
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Entrenched Incised Meander (Rejuvenation)
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This is when a river has a meander with steep symmetrical valleys.
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Ingrown Incised Meander (Rejuvenation)
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This is when a river has a meander with a not so step asymmetrical valleys.
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Hard Engineering
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This is a flood prevention method involving large scale structures and engineering projects.
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Soft Engineering
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This is a flood prevention method avoiding the need to build.
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