“Waters of the United States,” as defined by the Clean Water Act, are “all waters which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; all interstate waters, including interstate ‘wetlands’; all other waters, such as intrastate lakes, rivers, streams (including intermittent streams), mudflats, sandflats, ‘wetlands,’ sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use, degradation, or destruction of which would affect
