Which type of body of water is not subject to shoreland zoning?

Man-made ponds of 20 acres or more are typically not subject to shoreland zoning regulations in Maine. Shoreland zoning is a set of land use regulations aimed at protecting the water quality, natural resources, and aesthetic values of shoreland areas around various types of water bodies.

In Maine, shoreland zoning applies specifically to natural water bodies, including tidal estuaries, great ponds, and coastal wetlands. Tidal estuaries are important ecological zones that support diverse wildlife and are critical for tidal action; great ponds provide recreational opportunities and are often larger natural water bodies; and coastal wetlands serve key functions such as habitat for fish and wildlife and flood protection.

Man-made ponds, on the other hand, are often constructed for specific purposes, such as irrigation, aquaculture, or aesthetic enjoyment, and may not fall under the same regulatory framework as naturally occurring water bodies. This distinction helps land use planners manage and protect the unique attributes of natural resources while providing flexibility for human-created landscapes.