what is rampart dam?
A project to dam the Yukon River in Alaska for hydroelectric power.
Rampart Dam
The Rampart Dam or Rampart Canyon Dam was a project proposed in 1954 by the U.S. Army Corps of Engineers to dam the Yukon River in Alaska for hydroelectric power. 
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Rampart Dam [SEP] Introduction
The Rampart Dam or Rampart Canyon Dam was a project proposed in 1954 by the U.S. Army Corps of Engineers to dam the Yukon River in Alaska for hydroelectric power. The project was planned for Rampart Canyon (also known as Rampart Gorge) just southwest of the village of Rampart, Alaska and about west-northwest of Fairbanks, Alaska. The resulting dam would have created a lake roughly the size of Lake Erie, making it the largest man-made reservoir in the world. The plan for the dam itself called for a concrete structure high with a top length of about . The proposed power facilities would have consistently generated between 3.5 and 5 gigawatts of electricity, based on the flow of the river as it differs between winter and summer.