Flood Damage Prevention Ordinance - Mason County

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(3) To minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public; (4) To minimize prolonged business and farming interruptions; (5) To minimize damage to public facilities and utilities such as water and gas mains, electric telephone and sewer lines, streets, and bridges located in areas of special flood hazard; (6) To help maintain a stable tax base by providing for the sound use and development of areas of special flood hazard so as to minimize future flood blight areas; (7) To ensure that potential buyers are notified that property is in an area of special flood hazard; and (8) To ensure that those who occupy the areas of special flood hazard participate, along with government, in assuming responsibility for their actions. (9) To allow individuals to protect their life, health, and property when it is done in accordance with all applicable laws and regulations. (10) Implement applicable recommendations of Skokomish River Comprehensive Flood Hazard Management Plan. (11) Provide for continued eligibility for National Flood Insurance Program 1.3 METHODS OF REDUCING FLOOD LOSSES In order to accomplish its purposes, this ordinance provides regulatory methods and provisions for: (1) Restricting or prohibiting uses which are dangerous to health, safety, and property due to water or erosion hazards, or which result in damaging increases in erosion or in flood heights or velocities; (2) Requiring that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; (3) Controlling the alteration of natural floodplains, stream channels, and natural protection barriers, which help accommodate or channel flood waters; (4) Controlling filling, grading, and other development which may increase flood damage; and (5) Preventing or regulating the construction of flood barriers which will unnaturally divert flood waters or may increase flood hazards in other areas. (6) Controlling excessive erosion by constructing sound erosion control structures and obtaining appropriate permits and exemptions from all applicable local, state, and federal jurisdictions. (7) Implementing the recommendations of adopted flood hazard studies and plans. Mason County Flood Damage Prevention Ordinance 2 Effective August 18, 2008
SECTION 2.0 DEFINITIONS Unless specifically defined below, words or phrases used in this ordinance shall be interpreted so as to give them the meaning they have in common usage and to give this ordinance its most reasonable application. “A-ZONE” or “ZONE A” means those areas shown on the Flood Insurance Rate Maps (FIRM) as that area of land within the floodplain which would be inundated by the Base Flood (100-year or one percent annual chance) flood. “ACCESSORY STRUCTURE” means nonresidential structures such as detached garages, sheds, garden buildings, pole buildings, and barns which are considered normal for farming and ranching activities. “ADMINISTRATOR” means the Director of the Mason County Department of Community Development or designee. “APPEAL” means the right to request for a review of the Administrator’s interpretation of any provision of this ordinance or a request for a variance. “AREA OF SHALLOW FLOODING” means a designated AO or AH Zone on the Flood Insurance Rate Map (FIRM). The base flood depths range from one to three feet; a clearly defined channel does not exist; the path of flooding is unpredictable and indeterminate; and, velocity flow may be evident. AO is characterized as sheet flow and AH indicates ponding. “AREA OF SPECIAL FLOOD HAZARD” means the land in the floodplain within a community subject to a one percent or greater chance of flooding on any given year. In Mason County, the designation of these areas on FIRM maps always includes the letter A. Areas of special flood hazard are designated as Frequently Flooded Areas. “AVULSION” means a sudden cutting off of land by flood, currents, or change in course of a body of water. “AVULSION RISK AREAS” are the areas which have been determined to have too high a risk of avulsion to permit new structures or expansion of existing structures. “BASE FLOOD” means the flood having a (1) percent chance of being equaled or exceeded in any given year. Also referred to as the “100-year flood.” In Mason County, the designation on FIRM maps always includes the letter A. “BASEMENT” means any area of the building having its floor subgrade (below ground level) on all sides. “BREAKAWAY WALL” means a wall that is not part of the structural support of the building and is intended through its design and construction to collapse under specific lateral loading Mason County Flood Damage Prevention Ordinance 3 Effective August 18, 2008
Page 1: Ordinance No. 87-08, Attachment A M
Page 5 and 6: “FLOOD PROTECTION ELEVATION” me
Page 7 and 8: This term includes structures which
Page 9 and 10: SECTION 3.0 GENERAL PROVISIONS 3.1
Page 11 and 12: SECTION 4.0 ADMINISTRATION 4.1 ESTA
Page 13 and 14: (1) Notify adjacent communities and
Page 15 and 16: elevations should be quite rare. Va
Page 17 and 18: 5.1 GENERAL STANDARDS SECTION 5.0 P
Page 19 and 20: this requirement must either be cer
Page 21 and 22: Figure 1. Requirements regarding be
Page 23 and 24: In areas with base flood elevations
Page 25 and 26: shall be evaluated on a case-by-cas
Page 27: WSDOT; (ii) All other provisions of

Flood Damage Prevention Ordinance - Mason County

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