Wind induced waves in narrow irrigation canals

AI Thread Summary
Estimating the maximum wave height generated by wind in a narrow irrigation canal presents unique challenges, particularly due to the canal's dimensions and alignment with wind patterns. The canal is approximately 5 meters deep with a 1:2 side slope and a 4.6-meter wide base, extending for about 8 kilometers but featuring several significant kinks. Traditional wave theory used for larger water bodies may not apply directly to this scenario, as wave generation is expected to be less pronounced in narrower channels. There is a lack of specific research addressing wave height in such contexts, making it essential to explore alternative methods or studies that could provide insights into quantifying wave behavior in narrow canals. Recommended resources include specific studies and design standards from the U.S. Bureau of Reclamation, which may offer relevant guidelines for this analysis.
Philip_Crawfor
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Hi,

We are trying to estimate the likely maximum wave generated from wind blowing along an irrigation canal. We will subsequently estimate runup and the required freeboard to prevent overtopping.

Our canal is ~ 5m deep, has 1:2 side-slopes and a 4.6m wide base. The canal is aligned with the prevalent wind for ~8 km but within this reach there are a number of significant kinks.

Currently we are using wave theory for dams / shore protection but these assume wide water bodies. Does anyone know how to quantify the wave height for a narrow canal? I would assume wave generation to be considerably less for a water body that is narrow like a canal.

We are unable to find any research on this topic. Any advice would be greatly appreciated.
 
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