Wis. Admin. Code Department of Natural Resources NR 328.32
A permit is required if land disturbance or excavation exceeds 10,000 square feet on the bank of the navigable waterway (s. 30.19, Stats., and ch. NR 341) or if the activity is conducted in a wetland (ss. 281.17 and 281.36, Stats.).
Erosion control activities may be subject to county, city or village ordinances. Local zoning ordinances place restrictions on grading, buffers, and the cutting of vegetation in the shoreland zone. The riparian is required to comply with, and obtain all necessary permits under, local shoreland ordinances.