Arkansas Boating Practice Exam

Low-head dams have a shallow and gradual slope, causing the water to flow over and create strong recirculating currents below the surface. This is the most common hazard associated with low-head dams because it can trap objects or people in the current, making it difficult to escape. The other options, such as risk of flooding, attracting sharks, and erosion of the river bed, are not directly related to low-head dams. Flooding and erosion may occur in certain situations, but they are not specific hazards caused by low-head dams. Attracting sharks is also not a common hazard as they are not typically found in freshwater areas where low-head dams are commonly built.