Obstructions or increases may only be permitted if amendments are made to this chapter, the official floodplain zoning maps, floodway lines and water surface profiles, in accordance with § 300-44C.
A.
In AE Zones with a mapped floodway, no obstructions or increases shall be permitted unless the applicant receives a conditional letter of map revision (CLOMR) from FEMA and amendments are made to this chapter, the official floodplain zoning maps, floodway lines and water surface profiles, in accordance with § 300-44C. Any such alterations must be reviewed and approved by FEMA and the WDNR.
B.
In A Zones, increases equal to or greater than 1.0 foot may only be permitted if the applicant receives a conditional letter of map revision (CLOMR) from FEMA and amendments are made to this chapter, the official floodplain maps, floodway lines and water surface profiles, in accordance with § 300-44C.
C.
The County Board shall change or supplement the floodplain zoning district boundaries and this chapter in the manner outlined in § 300-45 below. Actions which require an amendment to this chapter and/or submittal of a letter of map change (LOMC) include, but are not limited to, the following:
(1)
Any change to the floodplain boundaries and/or watercourse alterations in the FIRM.
(2)
Correction of discrepancies between the water surface profiles and floodplain zoning maps.
(3)
Any fill in the floodplain which raises the elevation of the filled area to a height at or above the flood-protection elevation and is contiguous to land lying outside the floodplain.
(4)
Any fill or floodway encroachment that obstructs flow causing any increase in the regional flood height.
(5)
Any upgrade to a floodplain zoning ordinance text required by § NR 116.05, Wis. Adm. Code, or otherwise required by law or for changes by Green Lake County.
(6)
All channel relocations and changes to the maps to alter floodway lines or to remove an area from the floodway or the flood-fringe that is based on a base flood elevation from a Flood Insurance Rate Map requires prior approval by the Federal Emergency Management Agency.