It's the Law: On the Water

Obstructing Navigation

It is illegal to:

Operate any vessel in such a way that it will interfere unnecessarily with the safe navigation of other vessels.
Anchor a vessel in the traveled portion of a river or channel in a way that will prevent or interfere with any other vessel passing through the same area.
Moor or attach a vessel to a buoy (other than a mooring buoy), beacon, light, or any other navigational aid placed on public waters by proper authorities.
Move, displace, tamper with, damage, or destroy any navigational aid.
Obstruct a pier, wharf, boat ramp, or access to any facility.

Dropping anchor