~ Cascade Dam ~ Idaho Bonus Dam 
~ 508.8 miles from PDX.
Cascade Dam, 75 miles north of Boise on Highway 55, near Cascade, Idaho, on the North Fork of the Payette River. Cascade Dam is a zoned earthfill structure 785 feet across the crest.
Cascade Reservoir is the fourth largest lake in the state.
GPS: 44.52417 ° N - 116.04972° W or 44° 31’ 27.01" N - 116° 02’ 58.99" W
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