The Conservancy District is established to preserve and perpetuate the open state of certain areas such as low land swamps, marshes and wetlands, floodplains and stream beds, slopes, bluffs, wooded areas, native or restored prairie, parks, passive recreation areas, wildlife habitat and other areas of ecological, scenic or recreational value which, because of their unique physical features or location, are deemed desirable to be retained for the benefit of this and future generations.