Oneida County, WI Environmental Rules: Erosion Control (2026)

22(1), the lead subsection of Surface Drainage and Erosion Control in Article III of the Subdivision Control Ordinance, requires that land divisions be designed so as to minimize soil erosion and to provide reasonable management of surface water drainage. It hands the Committee two specific powers: it may require engineering studies of erosion potentials and may impose preventive design requirements, and it may require documentation of surface water drainage patterns and impose design requirements to keep flows from causing undue erosion and siltation of surface waters, undue runoff onto adjoining land, roads or rights-of-way, or excessive infiltration into private on-site wastewater disposal sites.

The section directs subdividers who need help meeting those standards to the Department and the Oneida County Land and Water Conservation Department, and it flags that a subdivision may separately be subject to Wis. Admin. Code NR 151 and NR 216, the state's agricultural and construction-site stormwater rules. 22(2) requires a stormwater easement or drainage right-of-way wherever a subdivision is crossed by a watercourse. 09, Chapter 15's jurisdiction applies to all lands within Oneida County except within the corporate limits of any incorporated area, so this erosion-control design standard governs new land divisions in the towns, not plats platted inside the City of Rhinelander or a village. 04(4)(a)1.