A.
The Legislature of the Commonwealth of Pennsylvania has, by the passage of the Pennsylvania Flood Plain Management Act of 1978, delegated the responsibility to local governmental units to adopt floodplain management regulations to promote public health, safety, and the general welfare of its citizenry.
B.
Certain areas of Newtown Township are floodplain areas subject to periodic flooding from watercourses or inadequate drainage, wet soils or soils having a high-water table, which flooding results in loss of property, danger to life, damage to structures, injury to people, disruption of public and private activities and services, burdensome public expenditures for flood protection and relief, and impairment of the tax base, all of which adversely affect the public health, safety, and general welfare.
C.
Flood losses are caused by the cumulative effect of obstructions in floodplain areas causing increases in flood heights and velocities and the occupancy of floodplain areas by uses vulnerable to floods.
D.
Certain sections of Newtown Township are aquifer recharge areas which form the source of the underground water supply and are especially sensitive to pollution and contamination from inappropriate surface uses.
E.
Drainage areas, wet soils or soils having a high-water table and water courses located in Newtown Township are part of integrated drainage basins and as such, the construction or other alteration of land within the Township that increases runoff also increases the flood hazard to communities downstream.