"Water access structure" means a structure without a roof or cover that typically would be an accessory structure under RSA 483-B and that, as a matter of operational necessity, is located adjacent to the shoreline because its purpose is to provide a means of entry to a surface water for swimming and similar water-related recreational activities other than boating or a location for the direct observation of swimmers or other individuals engaged in water-related recreational activities. The term includes beaches, decks and patios, but does not include docking structures.
N.H. Admin. Code § Env-Wt 104.46