scholarly journals Impact of control structures on assimilative capacity of rivers and fish habitat

2009 ◽  
Vol 6 (2) ◽  
pp. 315-324 ◽  
Author(s):  
E. H. Imam ◽  
S. A. El Baradei
Keyword(s):  
Fish Habitat ◽  
Assimilative Capacity ◽  
Control Structures

scholarly journals Scour depth model for grade-control structures

2017 ◽  
Vol 20 (1) ◽  
pp. 117-133 ◽  
Author(s):  
Ahmed M. A. Sattar ◽  
Karol Plesiński ◽  
Artur Radecki-Pawlik ◽  
Bahram Gharabaghi
Keyword(s):  
Gene Expression ◽  
Parametric Analysis ◽  
Gene Expression Programming ◽  
Fish Habitat ◽  
Mountain Streams ◽  
Scour Depth ◽  
Control Variables ◽  
Control Structures ◽  
River Bed ◽  
Grade Control

Abstract Grade-control structures (GCS) are commonly used to protect fish habitat by preventing excessive river-bed degradation in mountain streams. However, flow over the GCS can cause localized scour immediately downstream of the weir. This paper aims to develop more accurate models for prediction of the maximum scour depth downstream of GCS, using a more extensive dataset and evolutionary gene expression programming (GEP). Three GEP models are developed relating maximum scour depth and various control variables. The developed models had the lowest error compared to available models. A parametric analysis is performed for further verification of the developed GEP model. The results indicate that the proposed relations are simple and can more accurately predict the scour depth downstream GCS.

The research of fish habitat protection

2014 ◽  
Author(s):  
Weiming Li ◽  
Xujiao Yao ◽  
Xia Yang
Keyword(s):  
Fish Habitat ◽  
Habitat Protection
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