Applicability.
It shall be unlawful for any person, partnership, business or corporation to undertake, or cause to be undertaken, any construction or development anywhere within any identified floodplain area in West Goshen Township unless a permit has been obtained from the floodplain administrator.
Identification of floodplain areas.
A. The identified floodplain area shall be:
(1) Any areas of West Goshen Township classified as special flood hazard areas (SFHAs) in the Flood Insurance Study (FIS) and the accompanying Flood Insurance Rate Maps (FIRMs) dated September 29, 2017, and issued by the Federal Emergency Management Agency (FEMA), or the most recent revision thereof, including all digital data developed as part of the Flood Insurance Study.
B. The above-referenced FIS and FIRMs, and any subsequent revisions and amendments, are hereby adopted by West Goshen Township and declared to be a part of this article.
Description and special requirements of identified floodplain areas.
A. The Floodway Area. See
§ 84-90.5A for details.
B. The AE Area/District. See
§ 84-90.5B for details.
C. The A Area/District. See
§ 84-90.5C for details.
D. The AO and AH Area/District. See
§ 84-90.5D for details.
E. In lieu of any of the analysis or methods set forth above, the Township may require the applicant to determine the elevation with hydrologic and hydraulic engineering techniques. Hydrologic and hydraulic analyses shall be undertaken only by professional engineers or others of demonstrated qualifications, who shall certify that the technical methods used correctly reflect currently accepted technical concepts. Studies, analyses, computations, etc., shall be submitted in sufficient detail to allow a thorough technical review by the municipality. In the absence of any of the above data or documentation, the Township may require elevation of the lowest floor to be at least three feet above the highest adjacent grade.
General technical provisions.
Any new construction, development, uses or activities allowed within any identified floodplain area shall be undertaken in strict compliance with the provisions contained in this article and any other applicable codes, ordinances and regulations.
Within any identified floodplain area, no new construction or development shall be located within the area measured 50 feet landward from the top-of-bank of any watercourse.
Uses permitted by right. See
§ 84-90.9E for a detailed list.
Special exception uses. See
§ 84-90.9F for a detailed list.
Elevation and floodproofing requirements.
Within any identified floodplain area, any new construction or substantial improvements shall be prohibited unless otherwise provided for herein. If a use is permitted by right, by special exception or by variance, then the following provisions apply:
A. Residential structures.
(1) In AE, A1-30, and AH Zones, any new construction or substantial improvement shall have the lowest floor (including the basement) elevated up to, or above, the regulatory flood elevation.
(2) In A Zones, where there are no base flood elevations specified on the FIRM, any new construction or substantial improvement shall have the lowest floor (including the basement) elevated up to, or above, the regulatory flood elevation determined in accordance with this article.
(3) In AO Zones, any new construction or substantial improvement shall have the lowest floor (including the basement) at or above the highest adjacent grade at least as high as the depth number specified on the FIRM.
(4) The design and construction standards and specifications contained in the 2009 International Building Code (IBC) and in the 2009 International Residential Code (IRC), or the latest edition thereof adopted by the Commonwealth of Pennsylvania, and ASCE 24 and 34 Pa. Code (Chapters 401-405, as amended) shall be utilized, where they are more restrictive.
B. Nonresidential structures. See
§ 84-90.10B for details.
C. Space below the lowest floor. See
§ 84-90.10C for details.
Special requirements for subdivisions and development.
All subdivision proposals and development proposals containing at least 50 lots or at least five acres, whichever is the lesser, in identified floodplain areas where base flood elevation data are not available, shall be supported by hydrologic and hydraulic engineering analyses that determine base flood elevations and floodway information. The analyses shall be prepared by a licensed professional engineer in a format required by FEMA for a conditional letter of map revision (CLOMR) and letter of map revision (LOMR). Submittal requirements and processing fees shall be the responsibility of the applicant.
Special requirements for manufactured homes. See
§ 84-90.14: Special requirements for manufactured homes. for detailed information.
Special requirements for recreational vehicles.
Within any identified floodplain area, recreational vehicles shall be prohibited. If a variance is obtained in accordance with the required criteria, then the following provisions apply:
A. Recreational vehicles in Zones A, A1-30, AH and AE must:
(1) Be on the site for fewer than 180 consecutive days; and
(2) Be fully licensed and ready for highway use.
Prohibited Uses. See
§ 84-90.16: Prohibited uses. for details.
Existing structures.
The provisions of this article do not require any changes or improvements to be made to lawfully existing structures. However, when an improvement is made to any existing structure, the following provisions shall apply to such improvements.
Improvements to existing structures. See
§ 84-90.18: Improvements to existing structures for detailed information.