Constructed in 1924, Black Canyon Dam is a $1,500,000 concrete gravity dam with a 1,039 foot crest and a 183 foot structural height. A 29 mile canal, along with lesser ditches, serves 58,250 acres of Boise and Payette valley farms. A power plant at Black Canyon Dam generates electricity for commercial use as well as for irrigation pumping, and farms far from early riverside canals benefit from this project.