A. 
Where not prohibited by this or any other laws or ordinances, land located in any designated floodplain district may be platted for development with the provision that the developer construct all buildings and structures to preclude flood damage in accordance with this and any other laws and ordinances regulating such development.
B. 
No subdivision and/or land development, or part thereof, shall be approved if the proposed development and/or improvements will, individually or collectively, increase the one-hundred-year flood elevation more than one foot at any point.
C. 
Building sites for residences or any other type of dwelling or accommodation shall not be permitted in any floodway area. Sites for these uses may be permitted outside the floodway area if the sites or dwelling units are elevated to the regulatory flood elevation. If fill is used to raise the elevation of a site, the fill area shall extend out laterally for a distance of at least 15 feet beyond the limits of the proposed structures and in compliance with § 62-10B certified by a registered engineer.
D. 
Building sites for structures or buildings other than for residential uses shall also not be permitted in any floodway area. Also, such sites for structures or buildings outside the floodway shall be protected as provided for in § 62-10C above. However, the Delaware County Planning Commission may allow the subdivision and/or development of areas or sites for commercial and industrial uses at an elevation below the regulatory flood elevation if the developer otherwise protects the area to that height or assures that the buildings or structures will be floodproofed at least up to that height.
E. 
If the Delaware County Planning Commission determines that only a part of a proposed plat can be safely developed, it shall limit development to that part and shall require that development proceed consistent with this determination. The Planning Commission, at its discretion, may recommend that the local municipality consider modifying its density requirements to permit an equal number of units on the remainder of the tract as would have resulted under existing ordinances prior to the determination that only a part of a proposed plat can be safely developed. Such recommendation shall not be binding on the local municipality.
F. 
When a developer does not intend to develop that plat himself and the Delaware County Planning Commission determines that additional controls are required to insure safe development, it may require the developer to impose appropriate deed restrictions on the land. Such deed restrictions shall be inserted in every deed and noted on every recorded plat.
A. 
Excavation and grading. Where any excavation or grading is proposed or where any existing trees, shrubs, or other vegetative cover will be removed in the designated floodplain district, the developer shall consult the Delaware County Conservation District representative concerning plans for erosion and sediment control and to also obtain a report from the Conservation District on the soil characteristics of the site so that a determination can be made as to the type and degree of development that the site may accommodate. A copy of this report shall be forwarded to the Delaware County Planning Commission. Before undertaking any excavation or grading, the developer shall obtain a grading and excavation permit if such is required by the local municipality.
B. 
Drainage facilities.
(1) 
Storm drainage facilities shall be designed to convey the flow of surface waters without damage to persons or property. The system shall insure drainage at all points along streets and provide positive drainage away from buildings and on-site waste disposal sites.
(2) 
Drainage plans shall be consistent with local and regional drainage plans. The facilities shall be designed to prevent the discharge of excess runoff onto adjacent properties. The Delaware County Planning Commission may require retention basins prior to discharge to prevent increase in flood elevation downstream.
C. 
Streets. The finished elevation of proposed streets shall not be less than the one-hundred-year flood elevation. The Delaware County Planning Commission may require, where necessary, profiles and elevations of streets to determine compliance with the requirements. Drainage openings shall be sufficient to discharge flood flows without unduly increasing flood heights.
D. 
Sewer facilities. All public sanitary sewer systems located in any designated floodplain district shall be floodproofed up to the regulatory flood elevation. The installation of sewage disposal facilities requiring soil absorption systems where such systems will not function due to high groundwater, flooding, or unsuitable soil characteristics shall be prohibited. The Delaware County Planning Commission may require that the developer note on the face of the plat and in any deed of conveyance that soil absorption fields are prohibited in designated areas.
E. 
Water facilities. All water systems located in any designated floodplain districts, whether public or private, shall be floodproofed up to the regulatory flood elevation. If there is an existing public water supply system on or near the subdivision, the Delaware County Planning Commission shall require the developer to connect to this system where it is economically feasible.
F. 
Other utilities and facilities. All other public and/or private utilities and facilities, including gas and electric, shall be elevated or floodproofed up to the regulatory flood elevation.
G. 
Channel alterations, etc.
(1) 
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.
(2) 
Prior to any proposed alteration or relocation of any watercourse, stream, etc., within the County, a permit shall be obtained from the Department of Environmental Protection. Further, notification of the proposal shall be given by the local municipality to all affected adjacent municipalities. Copies of such notifications shall be forwarded to the Federal Insurance Administration, the Pennsylvania Department of Community and Economic Development, Delaware County Planning Commission, and the local municipality.