- Thornbury Township Environmental Advisory Council
- Pennsylvania Department of Environmental Protection
- Link to DEP stormwater management
- Delaware County Conservation District
- NPDES
- EPA Nonpoint Source Outreach Digital Toolbox
- Center for Watershed Protection - Stormwater Manager's Resource Center
- Chester-Ridley-Crum Watersheds Association
- Stormwater Management Act (Act 167) Stormwater Management Act (Act 167)
- Snow Management and Disposal
- Management of Cleaning Wastewater , Chapter 92a Fees
- PA Stormwater BMP Manual
- Stream Improvement Program
- Flood Prevention and Management
- Erosion and Sediment Control Requirements
- Soil Erosion and Sediment Pollution ,
- Urban Wetlands
- Permitting Options for Flood Damaged Bridges and Other Water Obstructions and Encroachments
- Emergency Removal of Debris from Streams
- General Permits for Work in Waterways, Floodways and Wetlands
- Reporting Requirements for Spills and Pollution Incidents .
- Water Cycle Glossary of Terms