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Stream and Wetland Regulatory Program

The Water Obstructions and Encroachments Section of the Division of Wetlands, Encroachments and Training develops and coordinates regulation, policy, program guidance and procedure for the regional implementation of the Chapter 105 Waterways and Wetlands program, including coordination with Federal Clean Water Act, Section 404 requirements. This program also administers the submerged lands licensing program as well as the commercial sand and gravel royalty agreements.

Fact Sheets and Publications

Guidelines and Guidance

Availability of Revised Environmental Assessment Form and Instructions for Chapter 105 Water Obstruction and Encroachment Permit Applications

Effective March 1, 2022, the Department of Environmental Protection (Department) requires the use of the revised Joint Permit Application and Environmental Assessment Forms for Chapter 105 Water Obstruction and Encroachment Permit Applications.  This information is intended to clarify use of the PA Function-Based Aquatic Resource Compensation Protocol (310-2137-001) for completing the information requirements for a Water Obstruction and Encroachment Permit application, including Small Project Applications Environmental Assessment Form (3150-PM-BWEW0017) in accordance with 25 Pa. Code Chapter 105 (Dam Safety and Waterway Management) for all projects. The revised Environmental Assessment Form and Instructions can be accessed through the Department's eLibrary web site at by selecting “Permit and Authorization Packages,” then “Waterways Engineering and Wetlands,” then “Water Obstruction and Encroachment and Wetlands,” and “Environmental Assessment Form”, or using the direct link.

Statutes and Regulations


Federal Permitting and Associated State Water Quality Certifications (SWQC) Issued Under Section 401 of the Federal Clean Water Act