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.
(7) Any changes to any other officially adopted floodplain maps listed in §
300-10B.
Amendments to this chapter may be made upon petition of any interested party according to the provisions of § 59.69, Wis. Stats. Such petitions shall include all necessary data required by §§
300-33 and
300-38B. The land use permit shall not be issued until a letter of map revision (LOMR) is issued by FEMA for the proposed changes.
A. The proposed amendment shall be referred to the County Land Use Planning
and Zoning Committee for a public hearing and recommendation to the
County Board. The amendment and notice of public hearing shall be
submitted to the Wisconsin Department of Natural Resources regional
office for review prior to the hearing. The amendment procedure shall
comply with the provisions of § 59.69, Wis. Stats.
B. No amendments shall become effective until reviewed and approved
by the Wisconsin Department of Natural Resources.
C. All persons petitioning for a map amendment that obstructs flow,
increasing regional flood height 0.01 foot or more, shall obtain flooding
easements or other appropriate legal arrangements from all adversely
affected property owners and notify local units of government before
the amendment can be approved by the County Board.