The extended waterway ban affects recreational and commercial water activities on Lady Bird Lake, Lake Austin, and parts of the Colorado River. Strong currents and elevated water levels pose significant risks to boaters and swimmers, particularly those without personal flotation devices. The city has warned of limited underwater visibility, debris creating unpredictable currents, and potential bacterial contamination, which could lead to health hazards. The recent rescue highlights the dangers of ignoring the ban, especially for families and children.