We administer sanitary sewer, surface water management, and erosion control programs in urban areas of Clackamas County.
Plan review and permitting
Plan review and permitting are part of the broader land use and permitting process in unincorporated Clackamas County, City of Happy Valley and Rivergrove. We review and approve all public and private sanitary, storm, and erosion control plans for development activities such as:
- any activity that requires a building permit
- construction of structures, roadways, and utilities
- grading or excavating
- land division, including subdivisions, land partitions, and lot line adjustments.
Planning process and resources
- determining existing site conditions
- improvement requirements
- the permitting process
For additional information about the Pre-Application meeting, please contact the appropriate planning department.
Clackamas County, Happy Valley and Rivergrove Planning departments offer assistance to property owners, developers and contractors to gather information about site development requirements, land use, and permitting processes.
We oversee the construction standards for sanitary and stormwater systems. The standards outline the requirements to get the necessary permits for development activities.
You'll need the following erosion control permits based on location and area to be disturbed:
- WES Erosion Prevention and Sediment Control Permit
activity which disturbs 800 square feet or more
- DEQ 1200-CN or 1200-C permit
activity in unincorporated Clackamas County which disturbs greater than 1 acre
Rules and regulations
Fees and forms
Development Review Supervisor