A.
Identified area; effect on other provisions; zoning permits.
(1)
The identified floodplain area shall be any areas of Harris Township, subject to the 100-year flood, which is identified as Zone A (area of special flood hazard) in the Flood Insurance Study (FIS) dated May 4, 2009, and the accompanying maps or the most recent revision thereof as issued by the Federal Emergency Management Agency, including all digital data developed as part of the Flood Insurance Study.
(2)
This section supersedes any other conflicting provisions which may be in effect in identified floodplain areas. However, any other ordinance provisions shall remain in full force and effect to the extent that those provisions are more restrictive. If there is any conflict between any of the provisions of this section, the more restrictive shall apply.
(3)
Zoning permits shall be required before any construction or development is undertaken within floodplain areas of the Township.
B.
Description of floodplain areas.
(1)
The identified floodplain area shall consist of the following specific areas:
(a)
FW (floodway area). The areas identified as "floodway" in the AE Zone in the Flood Insurance Study prepared by the FEMA. The term shall also include floodway areas which have been identified in other available studies or sources of information for those floodplain areas where no floodway has been identified in the Flood Insurance Study.
(b)
FF (flood-fringe area). The remaining portions of the 100-year floodplain in those areas identified as an AE Zone in the Flood Insurance study, where a floodway has been delineated. The basis for the outermost boundary of this area shall be the 100-year flood elevations as shown in the flood profiles contained in the Flood Insurance Study.
(c)
FE (special floodplain area). The areas identified as Zone AE in the Flood Insurance Study, where 100-year flood elevations have been provided, but no floodway has been delineated.
(d)
FA (general floodplain area). The areas identified as Zone A in the FIS for which no 100-year flood elevations have been provided. When available, information from other federal, state, and other acceptable sources shall be used to determine the 100-year elevation, as well as a floodway area, if possible. When no other information is available, the 100-year elevation shall be determined by using a point on the boundary of the identified floodplain area which is nearest the construction site in question.
(2)
In lieu of the 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 Township.
(3)
Within any FW (floodway area), the following provisions apply:
(a)
No new construction or development shall be allowed, unless a permit is obtained from the Department of Environmental Protection regional office.
(c)
No variances shall be granted by the Harris Township Zoning Hearing Board for any development in the floodway that would result in increased flood heights.
(4)
Within any FE (special floodplain area), no new construction or development shall be allowed unless it is demonstrated that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the elevation of the 100-year flood more than one foot at any point.
(5)
Within any identified floodplain area, any new construction or substantial improvement of a nonresidential structure shall have the lowest floor (including basement) elevated up to, or above, the 100-year flood elevation, or be designed and constructed so that the space enclosed by such structure shall remain either completely or essentially dry during any flood up to that height.
(6)
Any nonresidential structure, or part thereof, having a lowest floor which is not elevated up to, or above, the 100-year flood elevation, shall be floodproofed in a completely or essentially dry manner in accordance with the W1 or W2 space classification standards contained in the publication entitled "Flood-Proofing Regulations" published by the U.S. Army Corps of Engineers (June 1972, as amended March 1992) or with some other equivalent standard. All plans and specifications for such floodproofing shall be accompanied by a statement certified by a registered professional engineer or architect which states that the proposed design and methods of construction are in conformance with the above-referenced standards.
C.
Permitted uses. Floodplains may only be used for the following, provided such uses do not conflict with the limitations of Subsection D below:
(1)
The tilling of land, the raising of crops, fruits and vegetables, and the raising and keeping of livestock and poultry;
(2)
Horticultural uses related to the raising, propagating, and selling of trees, shrubs, flowers and other plant materials;
(3)
Forestry uses related to the harvesting of lumber products;
(4)
Public and private conservation areas for the conservation of open space, water, soil and wildlife resources;
(5)
Park and recreational areas, including golf courses and driving ranges in districts where permitted;
(6)
Essential services, provided such facilities are designed and built to minimize and eliminate flood damage and infiltration, and are designed and built to applicable University Area Joint Authority and State College Borough Water Authority specifications;
(7)
Retaining walls, flood retention dams, culverts, and bridges as permitted by the Pennsylvania Department of Environmental Protection; and
(8)
Customary uses accessory to the above.
D.
Use limitations. The uses permitted in Subsection C are limited as follows:
(1)
All buildings, even if customarily associated with the uses permitted, are prohibited, except park shelters;
(2)
All other uses are prohibited, including, but not limited to, the following, which are not interpreted as being customary accessory uses: filling in of the floodplain or wetland or relocation of any watercourse; sanitary landfill or dumping of any kind; fences, except two-wire fences which will not impede, retard or change the direction of the flow of water or catch or collect debris carried by such water; outdoor storage of materials which are buoyant, flammable, explosive, or those hazardous materials listed in Section 38.7 of the Pennsylvania Department of Community and Economic Development's Floodplain Management Regulations, 16 Pa. Code § 38.7, as amended or supplemented; and on-site sewage disposal systems.
(3)
No activity or development shall be allowed within an identified floodway or portion of the floodplain which would cause any increase in flood levels during the 100-year flood.
(4)
No encroachment, alteration, or improvement of any kind shall be made to any watercourse until all adjacent communities which may be affected by such action have been notified by the Township, and all required permits or approvals first have been obtained from the Department of Environmental Protection. In addition, the Federal Insurance Administrator and the Pennsylvania Department of Community and Economic Development or its successor shall be notified by the Township prior to any watercourse alteration.
E.
Site plan review. All applications for zoning permits for lots, uses, and structures located within a floodplain or wetland or 100 feet therefrom shall submit, along with the application, a site plan as required in Article IX of this chapter. The site plan shall include the elevation of the lowest floor of the structure, the elevation of the 100-year flood and certification by an engineer of any required floodproofing measures.
F.
Development in floodplains and wetlands. It shall be the duty of any landowner or developer applying for a permit for development in a floodplain as designated in the Flood Insurance Study and accompanying Flood Insurance Rate Map (FIRM), or in a wetland designated by the Fish and Wildlife Service National Wetlands Inventory Maps, the 1995 Natural Resource Map prepared by the Centre Regional Planning Agency or on-site investigation to present evidence that all other necessary governmental permits, including those required by state and federal laws, have been obtained. This may include permits required by the Pennsylvania Sewage Facilities Act, No. 537 of 1965[1]; the Pennsylvania Dam Safety and Encroachment Act of 1979[2]; the Pennsylvania Flood Plain Management Act No. 166 of 1978[3]; and the Federal Water Pollution Control Act Amendments of 1972, Section 404, 33 U.S.C. § 1334; as amended.
(1)
The following minimum standards shall apply for all construction and development proposed within any identified floodplain area:
(a)
Fill. If fill is used, it shall:
[1]
Extend laterally at least 15 feet beyond the building line from all points;
[2]
Consist of soil or small rock materials only; sanitary landfills shall not be permitted;
[3]
Be compacted to provide the necessary permeability and resistance to erosion, scouring, or settling;
[4]
Be no steeper than one vertical to two horizontal feet unless substantiated data, justifying steeper slopes are submitted to, and approved by the Township; and
[5]
Be used to the extent to which it does not adversely affect adjacent properties.
(b)
Drainage facilities. Storm drainage facilities shall be designed to convey the flow of stormwater runoff in a safe and efficient manner. The system shall ensure proper drainage along streets, and provide positive drainage away from buildings. The system shall also be designed to prevent the discharge of excess runoff onto adjacent properties.
(c)
Water and sanitary sewer facilities and systems.
[1]
All new or replacement water and sanitary sewer facilities and systems shall be located, designed and constructed to minimize or eliminate flood damages and the infiltration of floodwaters.
[2]
Sanitary sewer facilities and systems shall be designed to prevent the discharge of untreated sewage into floodwaters.
[3]
No part of any on-site sewage system shall be located within any identified floodplain area except in strict compliance with all state and local regulations for such systems. If any such system is permitted, it shall be located so as to avoid impairment to it, or contamination from it, during a flood.
(d)
Other utilities. All other utilities such as gas lines, electrical and telephone systems shall be located, elevated (where possible) and constructed to minimize the chance of impairment during a flood.
(e)
Streets. The finished elevation of all new streets shall be no more than one foot below the regulatory flood elevation.
(f)
Placement of buildings and structures. All buildings and structures shall be designed, located, and constructed so as to offer the minimum obstruction to the flow of water and shall be designed to have a minimum effect upon the flow and height of flood water.
(g)
Anchoring.
[1]
All buildings and structures shall be firmly anchored in accordance with accepted engineering practices to prevent flotation, collapse, or lateral movement.
[2]
All air ducts, large pipes, storage tanks, and other similar objects or components located below the regulatory flood elevation shall be securely anchored or affixed to prevent flotation.
(h)
Floors, walls and ceilings.
[1]
Wood flooring used at or below the regulatory flood elevation shall be installed to accommodate a lateral expansion of the flooring, perpendicular to the flooring grain without causing structural damage to the building.
[2]
Plywood used at or below the regulatory flood elevation shall be of a "marine" or "water-resistant" variety.
[3]
Walls and ceilings at or below the regulatory flood elevation shall be designed and constructed of materials that are water-resistant and will withstand inundation.
[4]
Windows, doors, and other components at or below the regulatory flood elevation shall be made of metal or other water-resistant material.
(i)
Paints and adhesives.
[1]
Paints and other finishes used at or below the regulatory flood elevation shall be of marine or water-resistant quality.
[2]
Adhesives used at or below the regulatory flood elevation shall be of a marine or water resistant variety.
[3]
All wooden components (doors, trim, cabinets, etc.) shall be finished with a marine or water-resistant paint or other finishing material.
(k)
Equipment. Water heaters, furnaces, air-conditioning and ventilating units, and other electrical, mechanical or utility equipment or apparatus shall not be located below the regulatory flood elevation.
(l)
Fuel supply systems. All gas and oil supply systems shall be designed to prevent the infiltration of floodwaters into the system and discharges from the system into floodwaters. Additional provisions shall be made for the drainage of these systems in the event that floodwater infiltration occurs.
(2)
In accordance with the Pennsylvania Flood Plain Management Act,[4], and the regulations adopted by the Department of Community and Economic Development as required by the Act, any new or substantially improved structure which: will be used for the production or storage of any of the following dangerous materials or substances; or, will be used for any activity requiring the maintenance of a supply of more than 550 gallons, or other comparable volume, of any of the following dangerous materials or substances on the premises; or, will involve the production, storage, or use of any amount of radioactive substances, shall be subject to the provisions of this section, in addition to all other applicable provisions. The following list of materials and substances are considered dangerous to human life:
(a)
Acetone.
(b)
Ammonia.
(c)
Benzene.
(d)
Calcium carbide.
(e)
Carbon disulfide.
(f)
Celluloid.
(g)
Chlorine.
(h)
Hydrochloric acid.
(i)
Hydrocyanic acid.
(j)
Magnesium.
(k)
Nitric acid and oxides of nitrogen.
(l)
Petroleum products (gasoline, fuel oil, etc.).
(m)
Phosphorus.
(n)
Potassium.
(o)
Sodium.
(p)
Sulphur and sulphur products.
(q)
Pesticides (including insecticides, fungicides, and rodenticides).
(r)
Radioactive substances, insofar as such substances are not otherwise regulated.
(3)
Within any floodplain area, any new or substantially improved structure of the kind described above shall be prohibited.
(4)
The provisions of this section 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:
(a)
No expansion or enlargement of an existing structure shall be allowed within any floodway area that would cause any increase in the elevation of the 100-year flood.
(b)
No expansion or enlargement of an existing structure shall be allowed within any FE area that would, together with all other existing and anticipated development, increase the 100-year flood elevation more than one foot at any point.
(c)
Any modification, alteration, reconstruction, or improvement, of any kind to an existing structure, to an extent or amount of 50% or more of its market value, shall constitute a substantial improvement and shall be undertaken only in full compliance with the provisions of this section.
(d)
Any modification, alteration, reconstruction, or improvement of any kind to an existing structure, to an extent or amount of less than 50% of its market value, shall be elevated and/or floodproofed to the greatest extent possible.
G.
No modification or revision of any floodplain area shall be made without approval of the Federal Insurance Administrator.
H.
No modification or revision of any wetland area shall be made without the approval of a qualified wetlands expert, after completion of an on-site investigation, a copy of which shall be provided to Harris Township.
I. 100-YEAR FLOOD FLOOD FLOODPLAIN(1) (2) (3) FLOODPLAIN AREA FLOODPROOFING FLOODWATERS FLOODWAY IDENTIFIED FLOODPLAIN AREA REGULATORY FLOOD ELEVATION REPETITIVE LOSS SPECIAL PERMIT TOWNSHIP
Definitions. As used in this section, the following terms shall have the meanings indicated:
A flood that, on the average, is likely to occur once every 100 years (i.e., that has a 1% chance of occurring each year, although the flood may occur in any year).
A temporary inundation of normally dry land areas.
The limits of the floodplain conservation regulations are hereby determined to be areas subject to periodic inundation by floodwaters or runoff as delineated in the Flood Insurance Study (FIS) and accompanying Flood Insurance Rate Map (FIRM) for Harris Township, as prepared by the Federal Emergency Management Agency.
Areas subject to periodic inundation by floodwaters shall include: all flood hazard areas indicated as zones A, E, AE, AH, or AO on the aforementioned Flood Hazard Rate Maps; and all wetlands as defined herein and by both state and federal regulations.
All proposed development within areas classified as hydric or hydric inclusive soils by the Soil Survey of Centre County, Pennsylvania, prepared by the U.S. Department of Agriculture, shall provide a wetlands delineation prepared by a qualified wetlands expert and be subject to review and acceptance by Harris Township.
Excluded from the definition of floodplain are: all lands within such areas designated above to which the natural flow of floodwaters or runoff within drainage swales has been prevented because of lawful alterations to such areas by roads, dams, or other obstructions; and all lands which, prior to the passage of this section as part of the Code by Ord. No. 97, January 13, 1986, were filled with earth to an elevation greater than that of the boundary of the natural floodplain drainage swale as shown on said maps.
A relatively flat or low land area which is subject to partial or complete inundation from an adjoining or nearby stream, river or watercourse; and/or any area subject to the unusual and rapid accumulation of surface waters from any source.
Any combination of structural and nonstructural additions, changes, or adjustments to structures which reduce or eliminate flood damage to real estate or improved real property, water and sanitary facilities, structures and their contents.
Waters which escape from streams or other bodies of water and over low adjacent lands, as distinct from runoff.
The designated area of a floodplain required to carry and discharge flood waters of a given magnitude. For the purposes of this section, the floodway shall be capable of accommodating a flood of the 100-year magnitude.
The floodplain area specifically identified in this section as being inundated by the 100-year flood.
The 100-year flood elevation plus a freeboard safety factor of 1 1/2 feet.
Flood-related damages sustained by a structure on two separate occasions during a 10-year period for which the cost of repairs at the time of each such flood event, on average, equals or exceeds 25% of the market value of the structure before the damages occurred.
A special approval which is required for hospitals, nursing homes, jails and new manufactured home parks and subdivisions and substantial improvements to such existing parks, when such development is located in all, or a designated portion of a floodplain.
The Township of Harris, Centre County, Pennsylvania.
