Due to a recent spike in COVID-19 cases in Hawaii, Adopt-A-Highway clean up events will be suspended until further notice.

Stormwater Management

What We Do

Stormwater is a valuable resource, so protecting water quality is our ultimate goal. Learn what control measures and best management practices we set in place to achieve that.

Measures to Manage our Stormwater

Summaries of our 6 Minimum Control Measures (MCMs).

You can read our full, formal Stormwater Management Plan here.

Public Education and Outreach

Go to Public Outreach and Education

Public Involvement

Go to Public Involvement

Illicit Discharge Detection and Elimination

Go to Illicit discharge Detection and Elimination

Construction Site Runoff Control

Go to Construction Site Runoff Control

Post-Construction Stormwater Management

Go to Post-Construction Stormwater Management

Pollution Prevention / Good Housekeeping

Go to Pollution Prevention/ Good Housekeeping

Stormwater Management Plan

Read the full-length plan in detail below. Each section as well as the

entire plan is available in PDF format.