A. 
The municipality is divided into the districts stated on the Table of Districts, Uses and Lot Requirements,[1] as shown by the district boundaries on the Zoning Map.
B. 
Floodplain districts.
[Added 6-12-1979 by Ord. No. 569A]
(1) 
Basis of floodplain districts. The various floodplain districts shall include areas subject to inundation by waters of the one-hundred-year flood. The basis for the delineation of these districts shall be the Flood Insurance Study for the Borough of Dravosburg prepared by the Federal Insurance Administration dated December 15, 1978.
(a) 
The Floodway District (FW) is delineated for purposes of this chapter using that criterion of a certain area within the floodplain must be capable of carrying the waters of the one-hundred-year flood without increasing the water surface elevation of that flood more than one foot at any point. The areas included in this district are specifically defined in the floodway data table of the above-referenced Flood Insurance Study shown on the accompanied Flood Boundary and Floodway Map.
(b) 
The Flood-Fringe District (FF) shall be that area of the one-hundred-year floodplain not included in the floodway district. The basis for the outermost boundary of this district shall be the one-hundred-year flood elevation contained in the flood profiles of the above-referenced Flood Insurance Study (FIS) and as shown on the accompanied Flood Boundary and Floodway Map.
(c) 
The General Floodplain District (FA) shall be that floodplain area for which no detailed flood profiles and elevations are provided. Such areas are shown on the maps accompanying the FIS prepared by the FIA. In determining the necessary elevations for the purposes of this chapter, other sources of data may be used, such as:
[1] 
Corps of Engineers - Floodplain Information Reports.
[2] 
U.S. Geological Survey - Flood-Prone Quadrangles.
[3] 
U.S.D.A. Soil Conservation Service - County Soil Surveys (Alluvial Soils).
[4] 
Known high-water marks from past floods.
[5] 
Other sources.
(2) 
Overlay concept.
(a) 
The floodplain districts described above shall be overlays to the existing underlying districts as shown on the Official Zoning Ordinance Map, and, as such, the provisions for the floodplain districts shall serve as a supplement to the underlying district provisions.
(b) 
Where there happens to be any conflict between the provisions or requirements of any of the floodplain districts and those of any underlying district, the more restrictive provisions and/or those pertaining to the floodplain districts shall apply.
(c) 
In the event that any provision concerning a floodplain district is declared inapplicable as a result of any legislative or administrative actions or judicial discretion, the basic underlying district provision shall remain applicable.
(3) 
Boundary changes. The delineation of any of the floodplain districts may be revised by the governing body where natural or man-made changes have occurred and/or more detailed studies conducted or undertaken by the U.S. Army Corps of Engineers, a River Basin Commission or other qualified agency or individual documents the notification for such change. However, prior to any such change, approval must be obtained from the Federal Insurance Administration (FIA).
A. 
District boundaries shown on the lines of roads, streams, and transportation rights-of-way shall be deemed to follow the center lines. The vacation of roads shall not affect the location of such district boundaries. When the Zoning Officer cannot definitely determine the location of a district boundary by such center lines, by the scale or dimensions stated on the Zoning Map, or by the fact that it clearly coincides with a property line, he shall refuse action, and the Zoning Hearing Board, upon appeal, shall interpret the location of the district boundary with reference to the scale of the Zoning Map and the purposes set forth in all relevant provisions of this chapter.
B. 
Interpretation of district boundaries. Initial interpretations of the boundaries of the floodplain districts shall be made by the Zoning Officer. Should a dispute arise concerning the boundaries of any of the Districts, the Zoning Hearing Board shall make the necessary determination. The person questioning or contesting the location of the district boundary shall be given a reasonable opportunity to present his case to the Board and to submit his own technical evidence if he so desires.
[Added 6-12-1979 by Ord. No. 569A]
The permitted uses for each district are shown on the Table of Districts, Uses and Lot Requirements.[1] Uses not specifically listed shall not be permitted.
The governing body may authorize conditional uses as specified in the Table of Districts, Uses and Lot Requirements if all conditions and provisions of Article IV are met.
No structure shall exceed 45 feet in height above average ground level unless approved by the Zoning Hearing Board. The Board may authorize a variance to the height regulations in any district if:
A. 
All front, side, and rear yard depths are increased one foot for each additional foot of height; or
B. 
The structure is in any of the following and does not constitute a hazard to an established airport, television and radio towers, church spires, belfries, monuments, tanks, water and fire towers, stage towers and scenery lofts, cooling towers, ornamental towers and spires, chimneys, elevator bulkheads, smokestacks, conveyors, and flagpoles.
No single-family dwelling shall have a floor area of less than 700 square feet.
The minimum lot area, minimum width of lot, minimum depth of front yard, and minimum width of each side yard for each district shall be as shown on the Table of Districts, Uses and Lot Requirements.[1]
A. 
Lots which abut on more than one street shall provide the required front yards along every street.
B. 
All structures, whether attached to the principal structure or not, and whether open or enclosed, including porches, carports, balconies, or platforms above normal grade level, shall not project into any minimum front, side, or rear yard.
C. 
Any lot of record existing at the effective date of this chapter and then held in separate ownership different from the ownership of adjoining lots may be used for the erection of a structure conforming to the use regulations of the district in which it is located, even though its area and width are less than the minimum requirements of this chapter.
D. 
Where an on-lot septic tank is to be used, reference should be made to standards used by the Allegheny County Health Department. However, in no case shall the lot size be less than 1/2 acre.
E. 
Nonresidential structures or uses shall not be located or conducted closer to any lot line of any other lot in any R District than the distance specified in the following schedule:
Minimum Side or Rear
Yard Abutting Any Lot
in Any R District
Use
20 feet
Off-street parking spaces and access drives for nonresidential uses
40 feet
Churches, schools and public or semipublic structures
70 feet
Recreation facilities, entertainment facilities, motels, all business uses and industrial uses
[Added 6-12-1979 by Ord. No. 569A]
A. 
General provisions.
(1) 
All uses, activities, and development occurring within any floodplain district shall be undertaken only in strict compliance with the provisions of this chapter and with all other applicable codes and ordinances such as the Borough of Dravosburg BOCA Building Code.[1] In addition, all such uses, activities, and developments shall be undertaken only in compliance with federal or state law, including Section 404 of the Federal Water Pollution Control Act Amendments of 1972, 33 U.S.C. § 1334.
[1]
Editor's Note: See Ch. 120, Construction Codes, Uniform.
(2) 
Under no circumstances shall any use, activity and/or development adversely affect the capacity of the channels or floodways of any watercourse, drainage ditch, or any other drainage facility or system.
(3) 
Prior to any proposed alteration or relocation of any stream, watercourse, etc., within the municipality, a permit shall be obtained from the Department of Environmental Protection, Dams and Encroachment Division. Further, notification of the proposal by the Borough of Dravosburg shall be given to all affected adjacent municipalities. Copies of such notifications shall be forwarded to both the Federal Insurance Administration and the Department of Community and Economic Development.
B. 
Floodway District (FW). In the Floodway District no development shall be permitted except where any rise in flood heights caused by the proposed development will be fully offset by accompanying improvements which have been approved by all appropriate local and/or state authorities as required above.
(1) 
Permitted uses. In the Floodway District the following uses and activities are permitted, provided that they are in compliance with the provisions of the underlying district and are not prohibited by any other ordinance and provided that they do not require structures, fill, or storage of materials and equipment:
(a) 
Agricultural uses such as general farming pasture, grazing, outdoor plant nurseries, horticulture, truck farming, forestry, sod farming, and wild crop harvesting.
(b) 
Public and private recreational uses and activities such as parks, day camps, picnic grounds, golf courses, boat launching and swimming areas, hiking and horseback riding trails, wildlife and nature preserves, game farms, fish hatcheries, trap and skeet game ranges, and hunting and fishing areas.
(c) 
Accessory residential uses such as yard areas, gardens, play areas, and pervious parking areas.
(d) 
Accessory industrial and commercial uses such as yard areas, pervious parking and loading areas, airport landing strips, etc.
(2) 
Uses permitted by special exception. The following uses and activities may be permitted by special exception, provided that they are in compliance with the provisions of the underlying district and are not prohibited by any other ordinance:
(a) 
Structures except for mobile homes accessory to the uses and activities in Subsection B(1) above.
(b) 
Utilities and public facilities and improvements such as railroads, streets, bridges, transmissions lines, pipe lines, water and sewage treatment plants, and other similar or related uses.
(c) 
Water-related uses and activities such as marinas, docks, wharves, piers, etc.
(d) 
Extraction of sand, gravel, and other materials.
(e) 
Temporary uses such as circuses, carnivals, and similar activities.
(f) 
Storage of materials and equipment, provided that they are not buoyant, flammable or explosive, and are not subject to major damage by flooding, or provided that such material and equipment is firmly anchored to prevent flotation or movement, and/or can be readily removed from the area within the time available after flood warning.
(g) 
Other similar uses and activities, provided they cause no increases in flood heights and/or velocities. All uses, activities, and structural developments, shall be undertaken in strict compliance with the floodproofing provisions contained in all other applicable codes and ordinances.
C. 
Flood-Fringe District (FF). In the Flood-Fringe District the development and/or use of land shall be permitted in accordance with the regulations of the underlying district, provided that all such uses, activities, and/or development shall be undertaken in strict compliance with the floodproofing and related provisions contained in all other applicable codes and ordinances.
D. 
General Floodplain District (FA). In the General Floodplain Conservation District the development and/or use of land shall be permitted in accordance with the regulations of the underlying district, provided that all such uses, activities, and/or development shall be undertaken in strict compliance with the floodproofing and related provisions contained in all other applicable codes and ordinances.