Stormwater Quality BMPs Workshops 2026

The Stormwater Quality Best Management Practices (BMPs) workshop is an in-person, two-day educational event hosted by the City and County of Honolulu's Storm Water Quality Division.

Stormwater Management in Oahu, Hawaii Stormwater Management Services What is Stormwater Management ? As Hawaii's land is being converted via construction for housing and commercial development the increase in paved areas and shifting of underlying soil also changes how water flows during and after rainstorms.
Storm Water Management Program Plan

Chapter 5 - Post-Construction Storm Water Management in New Development and Redevelopment Program - describes the City's requirements for the permanent, long-term management of storm water following the construction phase.
Trash Free Hawaii Anything that goes into our storm drain system goes directly into the ocean untreated, negatively affecting water quality and marine life. Learn more about the Hawaii Department of Transportation (HDOT) Storm Water Management Program's #TrashFreeHawaii campaign, focused on doing your part to prevent storm water pollution.

Storm Water Management
City and County of Honolulu Best Management Practice Manual for Construction City and County of Honolulu's Storm Water Management Program Programmatic Environmental Hazard Evaluation (EHE) /Environmental Hazard Management Plan (EHMP) document for the Iwilei District, prepared by HDOH HEER Office, March 2015 , Version 2.0 Other Environmental ...
DOT Storm Water Management Programs Airports Division Harbors Division Highways Division

Oahu Storm Water Management Program (SWMP) Plan
The Hawaii Department of Transportation (HDOT), Highways, Oahu District continues to implement its proactive comprehensive Storm Water Management Program (SWMP). This initiative is being taken to comply with our National Pollutant Discharge Elimination System (NPDES) Permit for the Oahu municipal separate storm sewer system (MS4) since it services a population greater than 250,000 and is ...


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