Question: The General Jesup was a steamboat that was launched on what river that starts in the Rocky Mountains?

<P0-S0> The historic town of Rocky Point was on the south side of the Missouri River in Fergus County, Montana, in the Missouri Breaks. <P0-S1>  Rocky Point was located at a natural ford on the Missouri River. <P0-S2>  In prehistoric times, American bisons trailed down through the breaks to Rocky Point to cross the river. <P0-S3>  During the Missouri River steamboat era (1860s to 1880s), the buffalo trail system leading to and from the ford caused Rocky Point to become a steamboat landing, which received freight for mining camps in the Judith Mountains (to the south) and in the Little Rocky Mountains (to the north) and also for Fort Maginnis built in 1880. <P0-S4>  In the 1870s and 1880s, Rocky Point had a store, hotel, two saloons, a feed stable, a blacksmith shop and a ferry. <P0-S5>  Due to its remote location in the Missouri Breaks, in the 1870s and 1880s Rocky Point became a refuge for outlaws who turned to rustling cattle and horses until rancher-vigilantes took punitive action in 1884. <P0-S6>  From 1886 to 1936 it had a post office near by which was known as Wilder and so the community of Rocky Point was sometimes also called Wilder. <P0-S7>  The community at the Rocky Point ford continued through the homesteading years from 1900 to 1918, but faded away when the ferry ceased to function in the 1920s, and it finally disappeared in 1936 when the Army Corps of Engineers condemned and bought up land adjacent to the Missouri River that might possibly be affected by Ft Peck Dam, then being built. <P0-S8>  Today some historic but deteriorating structures still remain on the site, which is now on the Charles M. Russell National Wildlife Refuge operated by the U.S. Fish and Wildlife Service. <P0-S9>  Being on public lands the Rocky Point ford area may be approached by "dirt" roads and visited, but the roads become impassable when wet. <SEP> <P1-S0> The Colorado River is one of the principal rivers of the Southwestern United States and northern Mexico (the other being the Rio Grande). <P1-S1>  The 1450 mi river drains an expansive, arid watershed that encompasses parts of seven U.S. and two Mexican states. <P1-S2>  Starting in the central Rocky Mountains in the U.S., the river flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the Arizona–Nevada border, where it turns south toward the international border. <P1-S3>  After entering Mexico, the Colorado approaches the mostly dry Colorado River Delta at the tip of the Gulf of California between Baja California and Sonora. <SEP> <P2-S0> General Jesup was a side-wheel paddle-steamer, named for General Thomas Jesup then Quartermaster General of the United States Army, and was the second steamboat launched on the Colorado River, in 1854. <SEP> <P3-S0> The Rocky Mountains Park Act was enacted on June 23, 1887, by the Parliament of Canada, establishing Banff National Park which was then known as "Rocky Mountains Park". <P3-S1>  The act was modelled on the Yellowstone Park Act passed by the United States Congress in 1881. <P3-S2>  The Rocky Mountains Park Act outlined the national park concept, balancing conservation and development interests.