§ 35-F144. Subdivision Proposals.

(a)

All subdivision proposals shall be consistent with sections 35-F103, 35-F104, 35-F105.

(b)

All proposals for the development of subdivisions shall meet the development permit requirements of this subdivision. No floodproofing of an existing or proposed building in a new subdivision will be allowed as a substitute for providing the proper finished ground elevation, at the slab, above the ultimate development 100-year or twenty-five-year plus freeboard flood elevation, whichever is higher. Buildings in a proposed subdivision shall be on land that is above the controlling flood elevation.

(c)

Flood elevation data shall be provided for subdivision proposals and other proposed development, if not otherwise provided, and shall conform to the design requirements of section 35-504, Stormwater Management.

(d)

All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards, and in accordance with this subdivision.

(e)

All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed so that they will not affect the existing water surface elevations of the base flood, the ultimate development 100-year or 25-year ultimate development flood (whichever is greater) in the area of special flood hazard.

(f)

All proposed subdivisions must be contiguous to high ground that is not subject to flooding (the base flood, ultimate development 100-year or the twenty-five-year ultimate development flood, whichever is higher) that is in excess of one (1) foot flow depth, i.e., no "island" will be considered for platting; unless adequate connecting structures capable of passing the base flood, ultimate development 100-year or twenty-five-year ultimate development flood (whichever is higher) are provided to high ground (not subject to the controlling flood of the same floodplain), and an additional one (1) foot of free board is provided to all minimum floor slab elevations.

(g)

All proposed subdivisions traversed by an area of special flood hazard where the "buildable" portion of the subdivision is severed by the floodplain shall be provided with adequate access. Adequate access shall be a structure that will pass the control flood (ultimate development 100-year) without overtopping the structure. Upstream property must not be affected by backwater, and velocities in the vicinity of the structure must be controlled to prevent scour, erosion or structural damage. Proposed subdivisions that involve the platting of streets shall have at least one (1) access to an unflooded portion of existing dedicated street or roadway.

(h)

Proposed subdivisions that do not involve the platting of streets shall have access to an existing dedicated street that is not subject to flood depths of over one (1) foot.

(i)

Existing channels shall not be increased or decreased from their natural state until engineering data meeting the requirements of section 35-504, Stormwater Management, has been approved by the city engineering division. Floodplain engineering and procedures requirements for subdivision within FEMA or United States Corps of Engineers official flood prone areas shall conform to the engineering criteria as set out in section 35-504, Stormwater Management.

(Ord. No. 95415 § 1 Attachment A)