To keep things simple and provide applicants with as much information as possible, we use a tiered approach. The level of review - Tier 1, Tier 2 or Tier 3 - is based on a project’s size, location, complexity, and potential impact to our levees. All projects start at the simplest level and move to a more thorough review if more information is needed or mitigation is required.
Permits are free. CDID #1 does not charge any application or review fees. Contact us to set up a pre-application meeting to identify issues and explain submittal requirements.
Tier 1: Simple Review (Non-Federal Permits)
Tier 1 reviews are the most common. This is appropriate for residential applicants wanting to make a relatively minor improvement within our interior drainage system.
- French drains
Tier 2 : Detailed Review (Non-Federal Permits)
Tier 2 reviews are for larger projects which require additional permitting from other local jurisdictions. This applies to projects where land disturbing activity exceeds state thresholds for new and replaced impervious surfaces.
- New development
- Parking lots
- Road projects
Tier 3 : Complex Review (Federal Permits)
Tier 3 reviews involve projects located on or near the federal levee, regardless of size. Review requires coordination with the U.S. Army Corps of Engineers for a determination of alteration and possible 408 Review.
- Access road
- Geotechnical boring
- Utility penetration
Pre-application is required.
- Applicant Guide - Permits At A Glance (PDF)
- Applicant Guide - Section 408 Pre-Application (PDF)
- Applicant Guide - Section 408 Review (PDF)
- Applicant Guide - Section 408 Review Flow Chart (PDF)
- Applicant Guide - Preparing Drawing Submittals (PDF)
- Army Corps of Engineers - Portland District 408 Program
- Army Corps of Engineers - Contributing Funds Agreements
- Army Corps of Engineers - Public Law 84-99
- Fact Sheet - Public Law 84-99 (PDF)
- United States Code Title 33 Section 408 (PDF)
- EC 1165-2-220 Policy Guidance for 408 Reviews (PDF)
- PDR 1130-2-5 Levee Encroachment Standards (PDF)