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Federal Emergency Management Agency g 60.22 Planning considerations for flood- prone areas. (a) The flood plain management reg- ulations adopted by a community for flood-prone areas should: (I) Pennlt only that development of flood-prone areas which (i) Is appro. prlate in light of the probability of flood damage and the need to reduce flood losses, (ti) Is an acceptable social and economic use of the land in rela- tion to the hazards involved, and (III) does not increase the danger to human life; (2) Prohibit nonessential or Improp- er installation of public utllltles and public facllltles in flood-prone areaso (b) In fonnulating community devcl. opment goals after the occurrence of a flood disaster, each community shall consider-w (1) Preservation of the flood-prone area..o;; for open space purposes; (2) Relocation of occupants away from nood-prone areas; (3) Acquisition of land or land devel- opment rights for public purposes con- sistent with a policy of minimization of future property losses; (4) Acquisition of frequently flood- damaged structures; (c) In fonnulating community devel- opment goals and in adopting flood plain management regulations, each community shall consider at least the follOWing factors- (I) Human safety; , (2) Diversion of development to areas safe from flooding in light of the need to reduce flood damages and in light of the need to prevent environ- mentally incompatible flood plain use; (3) Full disclosure ,to all prospective and interested parties (including but not limited to purchasers and renters) that (i) certain structures are located within flood-prone areas, (il) variances have been granted for certain struc- tures located within flood-prone areas, and (ill) premium rates applied to new structures built at elevations below the base flood substantially increase as the elevation decreases; (4) Adverse effects of flood plain de- velopment on existing development; (5) Encouragement of floodproofing to reduce flood damage; (6) Flood warning and emergency preparedness plans; g 60.22 (7) Provision for alternative vehicu- lar access and escape routes when normal routes are blocked or de- stroyed by flooding; (8) Establishment of minimum flood- proofing and accellS requirements for schools, hospltals,nurslng homes, or- phanages, penal institutions, fire sta- tions, police stations, communications centers, water and sewage pumping stations, and other ~ pUblic or quasi- public facilities already located in the flood-prone area, to enable them to withstand flood damage, and to facili- tate emergency operations; (9) Improvement of local drainage to control increased runoff that might in. crease the danger of flooding to other properties; (10) Coordination of plans with neighboring community's flood plain management programs; (11) The requirement that all ne" construction and substantial Improve, ments in areas SUbject to subsidencf. be elevated above the base flood leve: equal to expected subsidence for af least a ten year period; (12) For riverine areas, requlrinl subdividers to furnish delineations fOJ floodways before approving a subdivi sion; (13) Prohibition of any alteration 0: relocation of a watercourse, except a part of an overall drainage basin plan In the event of an overall drainagl basin plan, provide that the flood car rying capacity within the altered or r€ located portion of the watercourse i maintained; (14) Requirement of setbacks fo new construction within Zones VI-3( VE, and V on a community's FIRM; (15) Requirement of additional e1, vatlon above the base flood level fo all new construction and substantiE Improvements within Zones AI-30, AI VI-30, and VE on the community FIRM to protect against such aceu) rences i\8 wa.ve wash arid fioati11 debris, to provide an added margin ( safety against floods haVing a magn tude greater than the base flood, or t compensate for future urban develo) ment: (16) Requirement of consistency b tween state, regional and local compr, henslve plans and flood plain manag ment programs; 271