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Environmental Disasters, Human-made: Watersheds

This guides helps provide information about human-made environmental disasters within 500 miles of Portland, Oregon.

Tip for Finding Sub-Watersheds

Each watershed should have detailed map of their own watershed on their website.

Some do a better job of outlining their jurisdiction. The best way to find a map is to search for the name of the watershed council and map. For example, search for:

Clackamas Watershed Council Map.

Your results will yield several maps, including an interactive map of the Clackamas Watershed.

Oregon Watershed Council Map

Willamette University

Willamette University Libraries

Mark O. Hatfield Library
900 State Street.
Salem Oregon 97301
Pacific Northwest College of Art Library
511 NW Broadway.
Portland Oregon 97209