Bank Protection Techniques Using Spur Dikes

A hydraulic model investigation was conducted to evaluate and demonstrate the effects of impermeable spur dikes as a bank protection technique in a concave bend. The tests were conducted to observe channel bed and bank response in a stream with noncohesive banks where suspended load is insignificant. Several parameters relative to spur dike design that were evaluated included the length to spacing ratio, the orientation angle, and the effect of an apron or mattress of protection at the toe of the dike.