Section NR 116.16 - Floodproofing(1) GENERAL STANDARDS. When floodproofing measures are required by either a municipal floodplain zoning ordinance or some other regulation which incorporates by reference the floodproofing requirements of this chapter, such measures shall be designed to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the regional flood, to assure that the structures are watertight and completely dry to the flood protection elevation without human intervention during flooding.(2) CERTIFICATION. (a) Whenever floodproofing measures are required, a registered professional engineer or architect shall certify that the following floodproofing measures will be utilized, where appropriate, and are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the regional flood: 1. Anchorage of structures, or addition of mass or weight to structures, to prevent flotation.2. Reinforcement of walls and floors to resist rupture or collapse caused by water pressures or floating debris.3. Construction of wells, water supply systems and waste treatment systems so as to prevent the entrance of flood waters into such systems.4. Subsurface drainage systems to relieve external pressures on foundation walls and basement floors.5. Cutoff valves on sewer lines or the elimination of gravity flow basement drains.6. Placement of essential utilities above the flood protection elevation.(b) Whenever floodproofing measures are required, a permit, special exception, conditional use or variance may not be issued until the certification required in par. (a) is submitted to the municipal zoning administrator. Wis. Admin. Code Department of Natural Resources NR 116.16
Cr. Register, February, 1986, No. 362, eff. 3-1-86.