; (ii) man-made or natural structures or channels through which water flows intermittently or ephemerally, including for the periodic drainage of rainfall; or (iii) wetlands, including playa lakes, prairie potholes, wet meadows, wet prairies, and vernal pools, that lack a continuous surface water connection to bodies of water that are waters described in subparagraph (A). (C) No aggregation The aggregation of wetlands or waters shall not be used to determine whether the wetlands or waters are navigable waters. . 4. Coast Guard Nothing in this Act or the amendments made by this Act shall be construed to impair, diminish, or otherwise affect the authority, function, jurisdiction, or power of the Coast Guard, or any member thereof, with respect to the navigable waters of the United States, or to affect or alter the status of such waters as navigable waters of the United States for such purposes.