Guide for Selecting Manning's Roughness Coefficients for Natural Channels and Flood Plains PDF Download
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Author:
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 72
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Book Description
Although much research has been done on Manning's roughness coefficients for stream channels, very little has been done on the selection of roughness values for densely vegetated flood plains. A procedure for the determination of Manning's roughness coefficient (n) for channels and flood plains analyzes the different roughness factors that affect the roughness coefficients for channels and flood plains. By determining the value of each factor and combining those values, the n value can be determined. Another procedure deals with densely vegetated flood plains where the major roughness is caused by trees, vines, and brush. The n value for this type of flood plain can be determined by measuring the "vegetation density" of the flood plain. Photographs of flood plain segments where n values have been verified are presented as a comparison standard to aid in assigning n values to similar flood plains.
Author:
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 72
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Book Description
Although much research has been done on Manning's roughness coefficients for stream channels, very little has been done on the selection of roughness values for densely vegetated flood plains. A procedure for the determination of Manning's roughness coefficient (n) for channels and flood plains analyzes the different roughness factors that affect the roughness coefficients for channels and flood plains. By determining the value of each factor and combining those values, the n value can be determined. Another procedure deals with densely vegetated flood plains where the major roughness is caused by trees, vines, and brush. The n value for this type of flood plain can be determined by measuring the "vegetation density" of the flood plain. Photographs of flood plain segments where n values have been verified are presented as a comparison standard to aid in assigning n values to similar flood plains.
Author: William F. Coon
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 152
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Book Description
Author: Robert D. Jarrett
Publisher:
ISBN:
Category : Stream measurements
Languages : en
Pages : 64
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Book Description
Author: Jeff V. Phillips
Publisher:
ISBN:
Category : River channels
Languages : en
Pages : 56
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Book Description
Author:
Publisher:
ISBN:
Category : Stream channelization
Languages : en
Pages : 84
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Book Description
The purpose of this group of pictures, selected from Technical Bulletin 129, "Flow of Water in Drainage Channels" by C.E. Ramser, is to illustrate the wide range of the roughness coefficient "n" of Manning's formula for channel velocities related to actual channel conditions. Study of the pictures and information shown should assist in selecting realistic values of "n" for both present and future constructed channels.
Author: Thomas B. Hardy
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 110
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Book Description
WinXSPRO is an interactive Windows software package designed to analyze stream channel cross section data for geometric, hydraulic, and sediment transport parameters. WinXSPRO was specifically developed for use in high-gradient streams (gradient > 0.01) and supports four alternative resistance equations for computing boundary roughness and resistance to flow. Cross section input data may be from standard cross section surveys using a rod and level or sag-tape procedures. WinXSPRO allows the user to subdivide the channel cross section into multiple sub-sections and has the ability to vary watersurface slopes with discharge to reflect natural conditions. Analysis options include developing stage-discharge relationships, evaluating changes in channel cross-sectional area, and computing sediment transport rates. Resource specialists can use the estimated stream-channel geometry cross section hydraulic characteristics and sediment transport output to assist with channel design and monitoring, instream flow analysis, the restoration of riparian areas, and the placement of instream structures.
Author: George J. Arcement
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 76
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Author:
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ISBN:
Category : Water-supply
Languages : en
Pages : 196
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Author:
Publisher:
ISBN:
Category : Floodplains
Languages : en
Pages : 86
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 142890624X
Category :
Languages : en
Pages : 154
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Book Description
