Sanitary Sewer Overflow Due to Vandalism, Warning Signs Still Posted

Due to vandalism, sewage has overflowed directly into Mill Creek and into the Columbia River. The sewer pipe has been cleared and the pipe has been repaired. No more sewage is overflowing.

Out of an abundance of caution, signs have been placed at locations of public river access on the Oregon shore of the Columbia River, from The Dalles Riverfront Park to West Mayer Park boat launch. The signs say: “Warning - Contaminated Water - No water contact” and give phone numbers to call for information.  These signs will remain in place at least until Thursday September 29, 2022 to allow time for water quality testing. Read the full press release here.

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City of The Dalles, OR


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The Engineering Services Division provides professional engineering services and support for contracts, design, plan reviews, project management, construction quality control, and acceptance of public improvements inside the Urban Growth Boundary. Division engineers assist in developing City ordinances and standards associated with the City’s built environment and manage the City's infrastructure archives.


2022 City of The Dalles Standard Specifications for Construction
2020 & 2019 City of The Dalles Standard Specifications for Construction
Conflict of Interest Guidelines
Conflict of Interest Form

2022 City of The Dalles Standard Drawings 
2020 & 2019 City of The Dalles Standard Drawings
Policy for Traffic Impact Studies
Stormwater Development Guidelines

Americans with Disabilities Act (ADA) Documents
City of The Dalles ADA Transition Plan Addendum is posted in the Planning Department section of the Applications & Documents webpage.
ADA Curb Ramp Design Checklist for designers and engineers
ADA Curb Ramp Design Exception Request for ramps at sidewalk corners
ADA Sidewalk/Drive Approach Design Exception Request for sidewalks and driveways

Do you have questions about the ADA documents? Contact the City's ADA Coordinator at