Lichens and the determination of river channel capacity

1976 ◽  
Vol 1 (3) ◽  
pp. 273-285 ◽  
Author(s):  
Ken J. Gregory
Keyword(s):  
Channel Capacity ◽  
River Channel

scholarly journals The Effectiveness of River Bank Normalization on Flood Risk Reduction

2019 ◽  
Vol 280 ◽  
pp. 01009
Author(s):  
I Gede Tunas ◽  
Rudi Herman
Keyword(s):  
High Risk ◽  
Risk Reduction ◽  
Channel Capacity ◽  
Flood Risk ◽  
River Channel ◽  
Flood Mitigation ◽  
River Bank ◽  
Left And Right ◽  
Central Sulawesi ◽  
River Banks

One popular technique used to reduce flood risk associated witha flood mitigation scheme, is normalization of a river bank. This methodcan be effected done by adjusting the width of the river on the left andright banks, in order to increase channel capacity. The biggest obstaclemost often encountered in adjusting the river banks is insufficient landarea, both on the left and right sides. The capacity of the river channel cantherefore not be optimised, due to this limitation. This study intends toevaluate the effectiveness of river bank normalization to reduce flood riskin the Puna River, Central Sulawesi Province of Indonesia. The capacityevaluation was conducted under two conditions i.e. before and afternormalization of the river bank, using HEC-RAS Hydrodynamic Program, integrated with GIS. The level of effectiveness is measured by acomparison between the capacity of the river channel after banknormalization with the required channel capacity on 100 years returnperiod of discharge for important and high-risk river categories. Simulationresults in both conditions show that the normalization of river banks canincrease channel capacity from 270 m3/s to 470.2 m3/s, where the requiredchannel capacity is 590.71 m3/s. The effectiveness of the banknormalization is 100 %, included in the category of very effective

Adjustment of river channel capacity downstream from a reservoir

1974 ◽  
Vol 10 (4) ◽  
pp. 870-873 ◽  
Author(s):  
K. J. Gregory ◽  
C. Park
Keyword(s):  
Channel Capacity ◽  
River Channel

scholarly journals On bankfull methods determination again – why we care?

2015 ◽  
Vol 27 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Artur Radecki-Pawlik ◽  
Tomasz Skalski ◽  
Karol Plesiński ◽  
Wiktoria Czech
Keyword(s):  
Ground Beetles ◽  
River Channel ◽  
Morphometric Parameters ◽  
Bankfull Discharge ◽  
Flow Through ◽  
Supporting Tool ◽  
Vegetation Characteristic ◽  
Environmental Agencies ◽  
Channel Environment

Abstract One more time we would like to pay attention of especially of the hydraulic engineer audience to bankfull stage and discharge. Along the paper we show commonly accepted definitions of it and ways of calculations. It is difficult to determine the size of the bankfull flow level, that is why the authors are presenting many selected methods. Some of the methods allow the determination of biotic bankfull flow through the occurrence of zones of vegetation characteristic and based on the observation of the occurrence of ground beetles (e.g. the Woodyer and the Radecki-Pawlik and Skalski methods). Some of the methods – most popular- are using morphometric parameters (e.g. the Williams, the Hey and Thorne, the Gauckler-Manning and finally the Lambor methods). We believe that the value of bankfull discharge would be accepted as a supporting tool for designers, hydraulics engineers and managers, especially those who care about river channel environment and cooperate with fluvial geomorphologists- and biologists as well as environmental agencies.

Sign in / Sign up

Export Citation Format

Share Document