A. Permits And Contents Of Permit: Permits shall be required for all proposed structures, placement of manufactured homes, and other development in the community within flood prone areas. A permit shall also be required for any proposed watercourse alteration or development.
1. Permit Contents: Before construction or development begins within any area of special flood hazard, a permit shall be obtained from the city, hereinafter referred to as the responsible agency. The permit shall specifically include:
a. For residential structures: Elevation in relation to mean sea level of the building site before construction and, of the lowest floor (including basement) of all proposed structures;
b. For nonresidential structures: Elevation in relation to mean sea level to which any structure will be floodproofed;
c. Certification by a registered professional engineer or architect that the floodproofing methods for any nonresidential structure meet the floodproofing criteria in subsection 11-1-8B2c of this chapter; and
d. Description of the extent to which any watercourse will be altered or relocated as a result of the proposed development.
2. Plans: The permit application may contain plans, in duplicate, drawn to scale showing:
a. Location and dimensions of the development site.
b. Proposed structures; buildings, manufactured homes, bridges, culverts, etc. (including existing structures where appropriate).
c. Placement, number, and type of anchors for manufactured homes.
d. Utility connection locations; sewer, water, gas, and electric.
e. Bridge and culvert plans must include hydraulic computations by a registered engineer.
f. Fill location and dimensions.
g. Storage of materials.
h. Drainage facilities.
i. Watercourse alterations including plan drawings, cross sections, and hydraulic computations.
j. Applicants may be asked to furnish additional information if deemed necessary by the responsible agency. (1975 Code § 4-5-2-1)
B. Permit Review: All permit applications shall be reviewed using the best available base flood elevation and floodway data from any federal, state or local source to: 1) assure sites are reasonably safe from flooding; 2) determine that all necessary permits have been obtained from those federal, state or local agencies from which prior approval is required; and 3) to determine if the proposed development adversely affects the flood carrying capacity of a flood prone area. For the purposes of this chapter, "adversely affects" means damage to adjacent properties because of rises in flood stages attributed to physical changes of the channel and the adjacent overbank areas.
1. If it is determined that there is no adverse effect and the development is not a building, the permit shall be granted without further considerations.
2. If it is determined that there is an adverse effect, technical justification (i.e., by a registered professional engineer) for the proposed development shall be required.
3. If the proposed development is a building, the following provisions of this chapter shall apply. (1975 Code § 4-5-2-2)