North Fork Dam (Clackamas County, Oregon) Explained

North Fork Dam
Location Map:	Oregon
Coordinates:	45.2433°N -122.2797°W
Country:	United States
Location:	Clackamas, Oregon

The North Fork Dam is on the Clackamas River, about five miles upriver from Estacada, Oregon.^[1] It was built in 1958.^[1] The North Fork Reservoir is behind it.

Construction

It is a concrete arched dam, 206 feet high and 676 feet long,^[1] is thin-shell of variable thickness. It varies in thickness from 32 feet at the base to 8 feet wide at the top.^[1]

The fish ladder

North Fork's construction entailed the building of the 1.9-mile-long North Fork Fish Ladder, one of the longest in the world.^[2] It also required a complex system to provide for downstream fish passage around the dam.

External links

• North Fork Reservoir Additional Information - Oregon State Marine Board
• A map
• Helping Fish Find Their Way Up The Clackamas
• The elevation, latitude and longitude

Notes and References

1. Web site: North Fork Dam and Powerhouse. The Oregon Encyclopedia. 3 January 2016.
2. Web site: North Fork Fish Ladder. The Oregon Encyclopedia. 3 January 2016.