Ohio Administrative Code › Title 1501:22 - Division of Soil and Water Resources - Coastal Floodplain Management › Chapter 1501:22-1 - Floodplain Management › Section 1501:22-1-04 - Floodplain management criteria

Current through all regulations passed and filed through July 1, 2024
(A) When a county or municipal corporation
			 has been notified, pursuant to the requirements of the national flood insurance
			 program, that it contains areas of special flood hazards (A zones) by the
			 publication of a FHBM or FIRM, but where such maps neither identify a floodway
			 or coastal high hazard area, nor contain water surface elevation data, the
			 county or municipal corporation shall:
(1)
			 Require permits for all proposed construction and other developments including
			 the placement of manufactured homes, within Zone A on the FHBM or FIRM;
(2) Review proposed development to
			 assure that all necessary permits have been received from those governmental
			 agencies from which approval is required by federal or state law, including
			 Section 404 of the Federal Water Pollution Control Act Amendments of 1972,   33 U.S.C. 1334;
(3) Review all permit
			 applications to determine whether proposed building sites will be reasonably
			 safe from flooding. If a proposed building site is in an area of special flood
			 hazard, all new construction and substantial improvements shall (a) be designed
			 (or modified) and adequately anchored to prevent flotation, collapse, or
			 lateral movement of the structure resulting from hydrodynamic and hydrostatic
			 loads, including the effects of buoyancy, (b) be constructed with materials
			 resistant to flood damage, (c) be constructed by methods and practices that
			 minimize flood damages, and (d) be constructed with electrical, heating,
			 ventilation, plumbing, and air conditioning equipment and other service
			 facilities that are designed and/or located so as to prevent water from
			 entering or accumulating within the components during conditions of flooding.
(4) Review subdivision proposals
			 and other proposed new development, including manufactured home parks or
			 subdivisions, to determine whether such proposals will be reasonably safe from
			 flooding. If a subdivision proposal or other proposed new development is in an
			 area of special flood hazard, any such proposals shall be reviewed to assure
			 that (a) all such proposals are consistent with the need to minimize flood
			 damage within the flood-prone area, (b) all public utilities and facilities,
			 such as sewer, gas, electrical, and water systems are located and constructed
			 to minimize or eliminate flood damage, and (c) adequate drainage is provided to
			 reduce exposure to flood hazards;
(5) Require within areas of special flood
			 hazard new and replacement water supply systems to be designed to minimize or
			 eliminate infiltration of flood waters into the systems; and
(6) Require within areas of special flood
			 hazard (a) new and replacement sanitary sewage systems to be designed to
			 minimize or eliminate infiltration of flood waters into the systems and
			 discharges from the systems into flood waters and (b) onsite waste disposal
			 systems to be located to avoid impairment to them or contamination from them
			 during flooding.
(7) Require that
			 all new subdivision proposals and other proposed developments (including
			 proposals for manufactured home parks and subdivisions) greater than fifty lots
			 or five acres, whichever is the lesser, include within such proposals base
			 flood elevation data;
(8) Obtain,
			 review and reasonably utilize any base flood elevation and floodway data
			 available from a federal, state, or other source, including data developed
			 pursuant to paragraph (A)(7) of this rule, as criteria for requiring that new
			 construction, substantial improvements, or other development in Zone A on the
			 FHBM or FIRM meet the standards in paragraphs (B)(2), (B)(3), (B)(5), (B)(6),
			 (B)(12), (B)(14), (C)(2) and (C)(3) of this rule;
(9) Where base flood elevation data are
			 utilized, within Zone A on the FHBM or FIRM:
(a) Obtain the elevation (in relation to mean
			 sea level) of the lowest floor (including basement) of all new and
			 substantially improved structures, and
(b) Obtain, if the structure has been
			 floodproofed in accordance with paragraph (B)(3)(b) of this rule, the elevation
			 in relation to mean sea level to which the structure was floodproofed, and
(c) Maintain a record of all such
			 information with the official designated by the county or municipal corporation
			 to administer the issuance of floodplain development permits.
(10) Notify, in riverine
			 situations, adjacent counties and municipal corporations prior to any
			 alteration or relocation of a watercourse, and submit copies of such
			 notifications to the chief of the division of water in the department of
			 natural resources.
(11) Assure
			 that the flood carrying capacity within the altered or relocated portion of any
			 watercourse is maintained;
(12)
			 Require that all manufactured homes to be placed within Zone A on the FHBM or
			 FIRM shall be installed using methods and practices which minimize flood
			 damage. For the purposes of this requirement, manufactured homes must be
			 elevated and anchored to resist flotation, collapse or lateral movement. Method
			 of anchoring may include, but are not to be limited to, use of over-the-top
			 frame ties to ground anchors. This requirement is in addition to applicable
			 state and local anchoring requirements for resisting wind forces.