NASBLA Public Library

This technical research report from the University of Minnesota’s St. Anthony Falls Laboratory examines the hydrodynamic effects of recreational powerboats - including wakeboats operating in wakesurf mode - and their impacts on the water column, sediment resuspension, aquatic vegetation, and lakebed conditions. The study provides science-based analysis of bow and stern waves, transverse waves, propeller wash, and wake-enhanced operating conditions across varying water depths and vessel types.

Of particular value to Boating Law Administrators and waterway managers, the report identifies measurable relationships between vessel operation, sediment entrainment, turbidity, shoreline impacts, and aquatic habitat disturbance. The findings support evidence-based discussions surrounding wake management policies, operational setback recommendations, boating traffic management, and regulatory zoning for shared-use waterways. The study also provides operational depth recommendations intended to minimize environmental impacts associated with recreational boating and wakesurfing activities. This resource serves as a valuable technical reference for agencies evaluating public safety concerns, environmental stewardship strategies, and long-term waterway management practices.