FLOOD06100

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: Design of Stable Channels with Flexible Linings
• Date: 10/1/1975
• Prepared By: Hydraulics Branch, Federal Highway Adminstration
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Longitudinal channel slope, ft./ft.

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Top width of flow prism, ft.

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Curve to tangent intersection for horizontal bend.

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Mean channel velocity, ft./sec.

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Side slope; cotangent of angle measured from
horizontal. Z '" cot ~.

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Internal angle of channel bend, degrees.

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Internal angle of channel bend which differentiates
between a short and a long bend, degrees.

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Incremental width of central portion of channel, ft.

=

Superelevation of the water surface in a bend, ft.

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Unit weight of water, lb./cu. ft.

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Angle of repose of rock riprap, degrees.

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Shear stress on bottom of channel, lb/sq. ft.

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Critical shear stress on channel boundaries,
1b./sq.ft.

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Critical shear stress on channel bottom, 1b./sq. ft.

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Critical shear stress on channel sides, lb./sq. ft.

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Average shear stress, 1b./sq. ft.

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Shear stress on sides of channel, 1b./sq. ft.

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Angle of side slope measured from horizontal, degrees.

Conversion Factors for British to Metric Units

Multiply

To Obtain

~

2.54
0.3048
0.3048
0.028317
0.453592

centimeters
meters
meters/second
cubic meters/second
kilograms

inches
feet
feet/second
cubic feet/second
pounds

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