The following provisions apply only to lands designated as "flood prone areas". Special review and measures shall be required to assure protection from flooding as set forth.
A. Special Review Of Building Permits Or Development In Flood Prone Areas: A floodplain activity permit or building permit may be required for development within any flood prone area. No permit shall be issued for new development or for the start of new construction or for expansion or additional construction to existing structures for any residential or nonresidential structure or bridges or accessory building including manufactured homes unless the application for permit is submitted accompanied by the following information for review:
1. Plans in triplicate drawn to scale showing the nature, location, dimensions, and elevation of the lot, existing or proposed structures, fill, storage of materials, floodproofing measures, and the relationship of the above to the location of the channel.
2. A typical valley cross section showing the channel of the stream, elevation of land areas adjoining each side of the channel, cross sectional areas to be occupied by the proposed development and high water information.
3. Plans (surface view) showing elevations or contours of the ground; pertinent structures, fill or storage elevations; size, location, and special arrangement of all proposed and existing structures on the site; location and elevations of streets, water supply, sanitary facilities; photographs showing existing land uses and vegetation upstream and downstream, soil types, and other pertinent information.
4. A profile showing the slope of the bottom of the channel or flow line of the stream. This profile shall cover a minimum of three hundred feet (300') upstream and downstream from the property limits unless additional information is requested by the community development department.
5. Specifications for building construction and materials, floodproofing, filling, dredging, grading, channel improvements, storage of materials, water supply and sanitary facilities.
6. Copies of all other permits required by state or federal law, including section 404 of the federal water pollution control act amendments of 1972, 33 USC 1334.
7. Plans and/or specifications demonstrating that construction will incorporate methods and practices that minimize flood damage and that material resistant to flood damage will be used for all new construction and substantial improvements.
8. Any other plans, surveys, calculations or computer studies that may be required by the community development department deemed necessary to determine the impact on and of the proposed development or building activity.
B. Use Restrictions In Designated Floodway: When floodway data has been provided by the federal insurance administrator the following control measures will apply to that portion of the floodway outside of the dedicated channel as required by this regulation:
1. Fill or encroachments are prohibited within the designated floodway that would impair its ability to carry and discharge waters resulting from the regulatory flood.
2. The designation of the floodway shall be based on the principle that the area chosen for the floodway be designated to carry the waters of the regulatory flood without increasing the water surface elevation of that flood more than one foot (1') at any point.
3. No structure, improvement, or development, temporary or permanent, shall be constructed in the floodway, nor shall any obstruction, fill or storage of goods, materials or equipment be permitted within the floodway.
4. Existing nonconforming uses in the floodway shall not be expanded but may be modified, altered or repaired to incorporate floodproofing measures provided such measures do not raise the level of the regulatory flood. (Ord. 2017, 2014: Ord. 1969, 2011)