The Pennsylvania Stormwater Management Act of 1978 (PA Act 167) requires counties to prepare stormwater management plans for all watersheds within the county. Historically, these plans were to be prepared on a watershed by watershed basis, requiring extensive time and costs for completion. Recently, Pennsylvania Department of Environmental Protection has encouraged counties to undertake county-wide stormwater management plans to reduce the time and costs involved. As of July 2, 2013, Act 167 plans have been completed and approved for all of Chester County's watersheds.
(1) A hardcopy of these plans can be reviewed at the offices of the Chester County Water Resources Authority and the Chester County Planning Commission.
(2) A hardcopy of these plans can be reviewed at the offices of the Delaware County Planning Department. (3) These Act 167 Plans are superseded and replaced by the County-wide Act 167 Plan for portions of these watersheds that are located within Chester County, however certain provisions of the previous plans still apply. See County-wide Plan Part 3, Part 5 and Appendices D and E for instructions.