Roadway Standards Section 410 - General

Chapter 4 establishes the technical requirements associated with storm water management.  

410.1 Regulatory Authority

The Engineering Division of DTD is responsible for ensuring the adequate drainage of public roadways and developed properties in unincorporated areas outside of established stormwater districts within the County.  Engineering regulates the construction of public and private roads and other site improvements to ensure adequate drainage of storm/surface water to an appropriate discharge point.

Clackamas County has multiple surface water districts: Water Environment Services (WES) encompasses the Clackamas County Service District #1 (CCSD#1) and the Surface Water Management Agency of Clackamas County (SWMACC) and Hoodland Service District. The other districts are Clean Water Services (CWS) and the Oak Lodge Sanitary District (OLSD).   

Engineering manages storm water drainage and surface water regulations for all development outside of the County's established storm water districts or outside city limits located within the County's boundary.  For the regulations in these other areas, please refer to the respective jurisdiction.

410.2 Engineering Regulations

Engineering has adopted WES stormwater standards, with the exceptions noted within this chapter. 

410.3 Erosion Control Contractor Certification Not Required

WES Erosion Control Certification shall not apply to Engineering regulations.

410.4 Fees

Fees listed in the WES rules and regulations, or their Stormwater Standards, only apply to areas within their surface water management districts.  For information on Engineering stormwater and erosion control fees outside of existing surface water management districts, see County Code, Appendix A: Fees. For surface water management fees, within another district or municipality, contact the district or municipality directly.