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Portland Water Bureau

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Join us for Cycle the Well Field on May 31

By Lindsay Wochnick

What local resource is capable of producing close to 100 million gallons per day of high quality drinking water, is the second largest water source in the State of Oregon, and is used as a back up water supply for customers served by the Portland Water Bureau?

Answer: The Columbia South Shore Well Field! 

Columbia South Shore Well Field Groundwater Aquifers

The Columbia South Shore Well Field is a series of 27 water supply wells located between the Columbia River and I-84, and stretching from I-205 in Portland all the way to Troutdale. Groundwater from the well field is used to supplement water from the Bull Run watershed during turbidity events or hot summer weather when water demand is greatest.

Columbia South Shore Well Field

On Saturday, May 31, 2014 from 8:45 am to 1:30 pm, the Portland Water Bureau and the Columbia Slough Watershed Council invite you, your friends and family aged 12 and up to take part in a yearly bike tour of this resource during the “Cycle the Well Field” event. 

Learn about the history, safety and functionality of Portland's underground drinking water system while pedaling over relatively flat terrain at a slow/moderate pace. Helmets are required and light refreshments provided. Bring water and a lunch to enjoy at Blue Lake Park.

Cycle the Well Field participants

Advanced registration is required for this free event. Please contact Penny Beckwith, Columbia Slough Watershed Council Outreach Director, at 503-281-1132 or register online

Doug Wise
Groundwater Protection


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