(1)   Purpose.
Development within the Wissahickon Watershed has led to increased flooding of the Wissahickon Creek and its tributaries and has increased the hazards of erosion, siltation, and channel enlargement within the Wissahickon Watershed. To prevent such adverse conditions and the degradation of the environment, it is necessary to impose environmental regulations to protect the health, safety, and general welfare, to improve water quality, and to achieve environmentally sound land development within the Wissahickon Watershed.