Tri-City Water Pollution Control Plant Area History

The site of the Tri-City Water Pollution Control Plant Expansion happens to be located in an area with a very rich history. Not only is it near Oregon City - the city at the end of the Oregon Trail - but it is also near once-rich fishing grounds where several tribes of Native Americans built their villages. The natural history has a story as well, as two dynamic rivers make their confluence here. In present times the site has seen its share of change, from the construction of highways to the eventual excavation of the adjacent quarry. The elements of this history come together to make this site unique to the Willamette Valley. Download the Tri-City History PDF to read the full story.