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Council adopts revised stormwater manual; staff to implement updated precipitation and design rules

Lake Oswego City Council · January 8, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

Council unanimously authorized the city manager to approve major revisions to the stormwater management manual that reorganize content, update precipitation depths based on recent data, require downstream technical analysis for large projects, add source controls, and implement changes to improve water quality consistent with DEQ permit language.

City staff presented a major reorganization and technical update to the stormwater management manual and asked the council to authorize the city manager to approve the revisions under municipal code. Miss Johnson, the presenting stormwater staffer, said the manual has been reorganized for usability, outreach to engineers and developers was conducted, and technical changes reflect…

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