According to 33 CFR 2.36, which definition best describes navigable waterways?

Navigable waterways are defined as waters that are subject to the ebb and flow of the tide, which indicates that they have a connection to the ocean or other tidal influences. This definition is vital because it highlights the natural dynamics of these waterways and their ability to support various forms of navigation and commerce. Under 33 CFR 2.36, the focus on tidal influence implies that these waters are significant for transportation and recreational purposes, as they are capable of accommodating vessels and facilitating the movement of goods and people.

The other definitions do not capture the full essence of what makes a waterway navigable. For example, waterways that are only used for recreational activities may not necessarily be suitable for commercial navigation. Similarly, identifying all waters within state boundaries does not account for the factors that permit or restrict navigation. Lastly, rivers that are not affected by tides may lack the necessary characteristics for navigability regulated under federal laws. Therefore, the definition emphasizing tidal influence accurately reflects the legal and practical considerations of navigable waterways.