A. Purpose.
The purpose of these provisions is to prevent the loss of property and life, the creation of health and safety hazards, the disruption of commerce and governmental services, the extraordinary and unnecessary expenditure of public funds for flood protection and relief, and to protect the tax base by:
(1) Regulating uses, activities and development which, acting alone or in combination with other existing or future uses, activities and development, will cause unacceptable increases in flood heights, velocities and frequencies.
(2) Restricting or prohibiting certain uses, activities and development from locating within areas subject to flooding.
(3) Requiring all those uses, activities and development that do occur in flood-prone areas to be protected and/or floodproofed against flooding and flood damage.
(4) Protecting individuals from buying lands and structures which are unsuited for intended purposes because of flood hazards.
B. Warning and disclaimer of liability.
(1) The degree of flood protection sought by the provisions of this chapter is considered reasonable for regulatory purposes and is based on acceptable engineering methods of study. Larger floods may occur on rare occasions. Flood heights may be increased by man-made or natural causes. This chapter does not imply that areas outside the floodplain districts or that land uses permitted within such districts will be free from flooding or flood damages.
(2) This chapter shall not create liability on the part of the Township or any officer or employee thereof for any flood damages that result from reliance on this chapter or any administrative decision lawfully made thereunder.
C. Floodplain classification. See
§ 500-2603C for detailed information.
D. Use regulations.
(1) The following uses and no others shall be permitted on land in the floodplain where such uses are permitted in the zoning district applicable to such lands:
(a) Tilling of the soil, grazing, pasturing.
(b) Forestry and wood production, excluding storage and mill structures.
(c) Flower and vegetable gardening, outdoor plant nurseries.
(d) Parks, playgrounds and golf courses, exclusive of buildings.
(e) Outlet installations for public sewage treatment plants.
(f) Utility easements.
(g) Water intakes, subject to pertinent regulations of the Pennsylvania Department of Environmental Protection.
(h) Outlet installations for private and industrial wastewater treatment plants.
(i) Quarrying, sand pit, gravel pit.
(2) Applications for any of the above-listed uses or any other development shall be submitted to the Township for its approval.
(3) None of the uses or development activity listed above shall be permitted in the floodway portion of the floodplain district unless the effect of the proposed activity or development on flood heights is fully offset by accompanying stream improvements.
E. Area and design requirements.
(1) Lot area. For purposes of application of regulations for minimum lot area, maximum building coverage, maximum impervious surface ratio and other area and dimensional requirements of this chapter, land in the floodplain shall be excluded from lot area.
(2) Site area. For purposes of application of regulations for minimum site area, maximum density, maximum impervious surface ratio and other area and design requirements of this chapter, land in the floodplain shall be excluded from base site area.
F. Existing structures.
(1) Any existing structure which is to undergo substantial improvement and which is located in the floodplain shall be designed and constructed in accordance with the W1 or W2 floodproofing classes contained in the publication "Flood-Proofing Regulations," United States Army Corps of Engineers, June 1972. Said structure shall also be firmly anchored to prevent flotation, collapse and lateral movement.
(2) No expansion or improvement of an existing structure shall be allowed in the floodway portion of the floodplain district unless the effect of the proposed development on flood heights is fully offset by accompanying stream improvements.
G. Development which may endanger human life. See
§ 500-2603G for detailed information.
H. Prohibited activities in the floodplain. See
§ 500-2603H for detailed information.
I. General floodplain regulations.
(1) Installation of fill materials. Fill may be placed within the limits of the floodplain, subject to the following conditions:
(a) Fill shall consist of soil or rock materials only.
(b) Satisfactory evidence shall be submitted indicating that the cross-sectional area of the floodplain will not be reduced.
(c) Satisfactory evidence shall be submitted indicating that there will be no increase in the potential flood height or increase in flood velocity at, above or below the site due to the proposed fill.
(d) Permission has been obtained for the proposed fill from the Division of Dams and Encroachments of the Pennsylvania Department of Environmental Protection pursuant to the state regulations of water obstructions and from the Township Engineer.
(2) Obstructions. The following shall not be placed in any stream channel or floodplain:
(a) Fences, except two-wire fences.
(b) Other structures or other matter which may impede, retard or change the direction of the flow of water in such stream channel or floodplain, or that will catch or collect debris carried by such water, or that is placed where the natural flow of the stream or floodwaters would carry the same downstream to the damage or detriment of property adjacent to the stream or floodplain.
(3) State regulations. No encroachment into or alteration or relocation of any watercourse shall take place unless a permit has been secured from the Pennsylvania Department of Environmental Protection, Bureau of Dam Safety, Obstructions and Stormwater Management, and notification of the proposed alteration, encroachment or relocation has been given to all adjacent communities, and copies of the notification(s) have been sent to the Pennsylvania Department of Community and Economic Development and the Federal Insurance Administration.
(4) For any new structure or substantially improved structure located on a parcel, if that parcel is located in part or in whole within the floodplain, then, upon completion of construction, there shall be filed with the Township Zoning Officer a flood elevation certificate, prepared by a licensed engineer and/or licensed surveyor, and an as-built plan showing the structure on the parcel, with vertical datum and elevations.
J. Disposition. See
§ 500-2603J for detailed information.
K. Variances. See
§ 500-2603K for detailed information.