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Erosion Control

Guide
Learn more about erosion control. Make sure dirt, mud, rocks and sediment don't leave a job site. Get information about erosion control inspections, floodplain maps and erosion prevention best management practices. Get guidelines for how to control erosion.
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Erosion control is an important part of any construction project. It's especially important when you are working near a waterway or natural resource area.

Erosion control best management practices 

Learn more about:

Erosion control detail drawings and erosion control manual

Erosion control inspections 

Erosion control inspections are required before any ground-disturbing activity. 

Erosion concerns sign

The erosion concerns sign explains how to use the sign:

Flood Hazard Regulations and Flood Maps

For information about floodplain maps, check out the following:

You can also search for floodplain information by address on Portland Maps. 

Site development permits 

You may need a site development permit for your project. Read more about site development permit applications and apply online. 

Related City Code- Title 10 Erosion and Sediment Control Regulations

Read the full Title 10 Erosion and Sediment Control Regulations.

Unincorporated Multnomah County and erosion control

Multnomah County has information on grading, erosion control and floodplains