The City of Portland is updating the Stormwater Water Management Plan and Monitoring Plan. The public commented on the plans before submission to the Oregon Department of Environmental Quality for approval. The comment period was open from Sept. 1 to Sept. 30, 2022.
The City of Portland adopted 2020 editions of the Stormwater Management Manual (SWMM) and Source Control Manual (SCM). The new editions of the manuals are in effect starting Dec. 14, 2020.