North Fork American River
The North Fork American River is the longest branch of the American River in Northern California. It is long from its source at the crest of the Sierra Nevada, near Lake Tahoe, to its mouth at Folsom Lake northeast of Sacramento. Prior to the construction of Folsom Dam the river was about longer making for a total length of .
Missouri River
In the early stages of Pick–Sloan development, tentative plans were made to build a low dam on the Missouri at Riverdale, North Dakota and 27 smaller dams on the Yellowstone River and its tributaries. This was met with controversy from inhabitants of the Yellowstone basin, and eventually the USBR proposed a solution: to greatly increase the size of the proposed dam at Riverdale – today's Garrison Dam, thus replacing the storage that would have been provided by the Yellowstone dams. Because of this decision, the Yellowstone is now the longest free-flowing river in the contiguous United States. In the 1950s, construction commenced on the five mainstem dams – Garrison, Oahe, Big Bend, Fort Randall and Gavins Point – proposed under the Pick-Sloan Plan. Along with Fort Peck, which was integrated as a unit of the Pick-Sloan Plan in the 1940s, these dams now form what is known as the Missouri River Mainstem System.