Agenda - 04-27-1981 - Laserfiche WebLink

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72 ' )f}',)) The Flood Insurance Study of Orange County was not a compete survey of all flood-prone streams in the County. The study included only the larger streams- generally those with drainage areas larger than one square mile. Streams in smaller drainage areas are subject to flooding but were not studied. Avail- able money and man-power was used to study the major streams which have the greatest potential for larger and potentially more damaging floods. The Planning Board has recommended application of Flooding regulations to streams not included in the Federal Flood Study. The County subdivision ordinance does have language providing for storm water management. The Planning Department has for sometime required delineation of flood-prone areas on newly created lots as a "drainage easement. It has done so under the authority given in section V-5 of the subdivision regulations. The extent of flooding is determined by field evidence and from the County soil survey. No structures are permitted in these flood-prone areas. The Board should speak to three policy questions related to flood hazard areas: (1) Does the Board wish to treat the floodway fringe like the floodway for regulatory purposes? (2) Does the Board wish to extend coverage of the Flood Ordinance to all perennial streams in the County? (3) Does the Board wish to continue to regulate flooding in newly created subdivisions on streams that were not part of the Flood Insurance Study? If the Board wishes to extend coverage of the ordinance and/or regulate the floodway fringe as the floodway, Planning Staff will come back to the Board with specific language and proposals in the near future.