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The City of Portland, Oregon

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

Customer Service: 503-823-7770


More Contact Info

Groundwater Special Events

Aquifer Adventure participants paddle the Columbia Slough

FREE groundwater events coming your way soon! 

*Groundwater 101, January 25, 2020
9:00 am to 1:00 pm
Location: McKinstry, 16790 NE Mason St.
FREE educational workshop that teaches groundwater basics including local geology and hydrology, the role groundwater plays in our drinking water system, and what can be done to protect this important resource. Links to the workshop handouts are below.

Groundwater 101 Schedule

Water Bureau & Columbia Slough Watershed Council Contacts & Information

Columbia South Shore Well Field (CSSWF) Protection Area Map

CSSWF Aquifers Cross-Section & Descriptions

CSSWF Aquifers Hydrogeologic Summary

Water Use in the United States Graphic

Groundwater 101 Glossary of Terms

 *Cycle the Well Field, June 13, 2020

Time: 8:45 am  to 1:30 pm
Location: Aloft Hotel Portland Airport, 9920 NE Cascades Pkwy
A FREE bicycle tour of Portland’s groundwater drinking water source. 

Aquifer Adventure, September 12, 2020
Noon to 4:00 pm
Location: NE 166th and Airport Way
FREE Pirate-themed family groundwater festival – make edible aquifers, play interactive groundwater games, take a canoe ride on the slough with a pirate guide, listen to live music.

*Registration Required

To register for an event or for more event information: or visit