Routing of floods through river channels

engineering and design.
  • 23 Pages
  • 3.83 MB
  • English

Corps of Engineers, U.S. Army , [Washington, D.C.]
Flood routing -- United States -- Handbooks, manuals, etc., River channels -- Handbooks, manuals,


United S

Other titlesEngineering and design
SeriesEM ;, 1110-2-1408, EM (Series) (United States. Army. Corps of Engineers) ;, 1110-2-1408.
ContributionsUnited States. Army. Corps of Engineers.
LC ClassificationsGB1399.3 .R68 1960
The Physical Object
Pagination23 p., 14 leaves of plates :
ID Numbers
Open LibraryOL860587M
LC Control Number95143375

Engineering and design. Routing of floods through river channels [United States. Army. Routing of floods through river channels book Corps of Engineers.] on *FREE* shipping on qualifying offers. Engineering and design.

Routing of floods through river channels. Flood routing is the technique of determining the flood hydrograph at a section of a river by utilizing the data of flood flow at one or more upstream sections.

The hydrologic analysis of problems such as flood forecasting, flood protection, reservoir design and spillway design invariably include flood routing.

Chapter 17 Flood Routing Introduction Flood routing and hydrograph generation (see Part Hydrology, chap ) form the key elements of a watershed hydrologic model. Stream channels, flood-plains, and reservoirs can have a significant impact on the delivery of water to any location along a stream network.

channels do not facing flood conditions. In order to carry out above tasks flood routing studies are required i.e. through reservoir routing. A detention reservoir has its own advantage in flood control and in which an obstacle or obstruction is made to a river reach with an uncontrolled outlet at end section.

Hydrologic Channel Routing The passage of a flood hydrograph through a reservoir or a channel reach is an example of unsteady –flow phenomenon. It is classified in open channel hydraulics as gradually varied unsteady flow phenomenon.

The equation of continuity used in all. Flood routing is a mathematical procedure in order to predict the variation of the magnitude of a flood wave when it propagates along natural rivers or artificial channels. The accuracy of flood.

In Moduleyou learned that flood routing is the process of determining the timing and shape of a flood wave. In a reservoir, Routing of floods through river channels book is done by accounting for the storage available in the reservoir.

In a channel, the flood wave is observed at successive points along a river. during major floods in a river basin. The number of direct observations of discharge during such flood periods is generally limited by the short duration of the flood and the inaccessibility of certain stream sites.

Through the use of flood-routing techniques, all observations of dis­. Several methods of channel flood routing are in use; for example, about half a dozen methods are used by the Soil Conservation Service of the U.S. Department of Agriculture. Considerable disagreement on flood-routing methods exists between agencies, and much time is being spent in an attempt to improve these methods or to develop.

Open Channel Hydraulics (2nd Edition) Edit edition. Problem 18E from Chapter 8: Repeat the flood-routing problem of Example using HEC-RA Get solutions.

Channel reach refers to a specific length of river channel possessing certain translation and storage properties. The terms river routing and flood routing are often used interchangeably.

This is attributed to the fact that most stream channel-routing applications are in flood flow analysis, flood control design or flood forecasting.

Flood routing simulations are carried out with the aim of realistically capturing the way the Bridge River hydroelectric system is operated during flood events ranging in annual exceedance probabilities (AEPs) from 1/2 to beyond 1/10, In reality this is a rather complex decision-making process involving various factors such as the inflow.

As defined by Fread () and Linsley et al.(), flood routing is a mathematical method for predicting the changing magnitude and celerity of a flood wave as it propagates down rivers or through reservoirs.

Details Routing of floods through river channels PDF

Comparative Analysis of Flood Routing Methods 5c. PROGRAM ELEMENT NUMBER 5d. PROJECT NUMBER 5e. TASK NUMBER 6.

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AUTHOR(S) Theodor Strelkoff, Hydraulic Engineer 43 Liberty Street San Francisco, CA 5F. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) US Army Corps of Engineers Institute for Water Resources. River channels change as water moves downstream, acting on the channel banks and on the channel bottom (the thalweg).

This force is made more potent during a flood, when the river’s velocity increases.

Description Routing of floods through river channels EPUB

Several features along a river are affected by this flow of water in different ways. A meander is a curve in a channel. Flood Control and Drainage Engineering book. Flood Routing through Reservoirs and Channels. With FLOOD ROUTING THROUGH RESERVOIRS—GENERAL. View abstract.

Flood Mitigation through River Protection and Improvement Works. INTRODUCTION. View abstract. chapter 7 | 15 pages FLOOD FORECASTING, WARNING AND FLOOD FIGHTING –   FLOOD ROUTING FLOOD ROUTING – The stage and discharge hydrographs represent the passage of waves of river depth and discharge respectively.

As this wave moves down the river, the shape of the wave gets modified due to various factors, such as channel storage, resistance, lateral addition or withdrawal of flows, etc. This hydrologic channel-flow routing scheme is applied to drainage networks by feeding source-area runoff into the channels, merging the channel flows at network junctions, and routing the flows.

Routing through river channels 88 Muskingum method 89 Hydraulic flood routing 96 Continuity equation of unsteady flow 96 Dynamic equation of unsteady flow 96 Characteristics of flood waves 98 Characterisation of flood waves by rating curve Flood waves in natural streams 4.

Sometimes it becomes essential to know the depth of flow at a specific location of a channel. This can be done by following the flood-routing procedure. When a river is in floods, the depth of the flow and the hydrograph at different locations along the river course are not the same, since the flow in the river is non-uniform and unsteady.

Methods of design flood computations 3. FLOOD ROUTING THROUGH RESERVOIRS AND CHANNELS Flood routing through reservoirs—General Basic Principles of routing Routing through river channels Hydraulic flood routing 4.

DESIGN OF SPILLWAYS Functions of spillways Spillway classification Types of spillways 5. The hydraulic method of flood routing is the sequence of steps performed to route the flood occurring from the rainfall dropping over the watershed from the channel start to the outlet of the watershed.

The direct runoff hydrograph in the channel should be developed at the section upstream of the outlet, done using methods like Muskingum routing.

Stream Flow Routing In a stream channel (river) a flood wave may be reduced in magnitude and lengthened in travel time, i.e., attenuated, by storage in the reach between two sections. The storage in the reach may be divided into two parts-prism storage and wedge storage since the water surface is not uniform during the floods.

Presentation (Flood Routing) - Free download as Powerpoint Presentation .ppt /.pptx), PDF File .pdf), Text File .txt) or view presentation slides online. flood routing presentation. Flood routing is the process of determining the timing and shape of a flood wave.

In a reservoir, this is done by accounting for the storage available in the reservoir, whereas in a channel, the flood wave is observed at successive points along a river. Reservoir and channel flood routing are the two types of routing that will be considered.

We describe the sources and routing of the Amazon River flood wave through a ‐km reach of the main channel, between São Paulo de Olivença and Obidos, Brazil. Genre/Form: Handbooks and manuals Handbooks, manuals, etc: Additional Physical Format: Online version: Routing of floods through river channels.

[Washington, D.C. Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free. In hydrology, routing is a technique used to predict the changes in shape of a hydrograph as water moves through a river channel or a reservoir.

In flood forecasting, hydrologists may want to know how a short burst of intense rain in an area upstream of a city will change as it reaches the city. for routing through stream channels. Manual versions of both methods are described in this chapter.

References Each of the following references contains general material on flood routing and descriptions of two or more methods.

References whose main subject is not flood routing. Flood routing is the technique of determining the flood hydrograph at a section of a river by utilizing the data of flood flow at one or more upstream sections. 5. Basic Equation for hydrologic routing: The passage of a flood hydrograph through a reservoir or a channel reach is a gradually varied unsteady flow.

During floods, part of the discharge of a river is carried by the simple main channel and the rest are carried by the floodplains located to its sides.

For such compound channels, the flow structure becomes complicated due to the transfer of momentum between the deep main channel .Flood routing is used in estimating the travel time and attenuation of flood waves as they move downstream a river or channel.

The routing procedure is usually classified as hydrologic or hydraulic.