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.

North Fork Dam
Location of North Fork Dam in Oregon
Country	United States
Location	Clackamas, Oregon
Coordinates	45°14′36″N 122°16′47″W

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.

References

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

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