Pennsylvania’s Chapter 105 program helps protect streams, rivers, wetlands, and other waterways by regulating activities that could impact them. It applies to projects that cross, fill, or change the flow of these water resources, including construction near waterways, building stream crossings, or obstructing or encroaching on wetlands.

The program ensures that these activities are done safely and responsibly, helping to prevent flooding, protect water quality, and preserve habitats for fish, wildlife, and plants. By requiring permits and review for certain projects, Chapter 105 balances the needs of property owners, developers, and communities with the protection of Pennsylvania’s valuable aquatic resources.

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