One or more water impoundments:

1. Constructed by man rather than natural, located wholly within the boundary of the lands owned or leased by the person operating the private water impoundments;
2. Entirely isolated from other surface water so that the impoundment does not have any connection either continuously or at intervals, except during periods of floods, with streams or other bodies of water so as to permit the fish to move between streams or other bodies of water and the private water impoundments, except that the private water impoundments may be connected with a stream or other body of water by a pipe or conduit if fish will be prevented at all times from moving between streams or other bodies of water and the private water impoundment by screening the flow or by other means.