In this subchapter:
Wis. Admin. Code Department of Natural Resources NR 19.91
For purposes of this subchapter, a natural body of water does not include an artificial wetland, as defined under s. NR 103.02(1m) or any swale, bermed area or excavation that is not located in a wetland, pond, lake, stream or spring that was historically present in a natural state, if the artificial wetland, swale, bermed area or excavation retains water as the result of human modification of the landscape or is constructed of man-made materials.