Question: The General Jesup was a steamboat that was launched on what river that starts in the Rocky Mountains?
Context: The Northern Rocky Mountains, usually referred to as the Northern Rockies, are a subdivision of the Canadian Rockies comprising the northern half of the Canadian segment of the Rocky Mountains.  While their northward limit is easily defined as the Liard River, which is the northward terminus of the whole Rockies, the southward limit is debatable, although the area of Mount Ovington and Monkman Pass is mentioned in some sources, as south from there are the Continental Ranges, which are the main spine of the Rockies forming the boundary between British Columbia and Alberta.  Some use the term to mean only the area north of Lake Williston (the Peace River), and in reference to Northern Rocky Mountains Provincial Park, while others consider the term to extend all the way south, beyond the limit of the Hart Ranges at Mount Ovington, to McBride and Mount Robson. 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".  The act was modelled on the Yellowstone Park Act passed by the United States Congress in 1881.  The Rocky Mountains Park Act outlined the national park concept, balancing conservation and development interests. The High Rockies, or high country, is a term for a region of the U.S. state of Colorado.  It commonly includes Larimer County, Jackson County, Routt County, Grand County, Summit County, Eagle County, Lake County, and Pitkin County.  Some notable towns there include Estes Park, Walden, Steamboat Springs, Grand Lake, Winter Park, Breckenridge, Dillon, Vail, Leadville, and Aspen.  The geography of the High Rockies has some of the most rugged parts of the Rocky Mountains and consists of the Front Range and mountainous topography to the west, much of which is on or near the Continental Divide.  Known for pine forests and winding roads, the former mining towns there have been reinvented by wilderness tourism such as hiking, cycling, fishing, and most especially both cross-country and alpine skiing.  Notable ski resorts include Copper Mountain, Keystone Resort, Steamboat Ski Resort, Beaver Creek Resort, Buttermilk, Aspen Highlands, Snowmass, and Aspen Mountain.  The High Rockies are also the location of Rocky Mountain National Park and Arapaho National Forest. 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. The Colorado River is one of the principal rivers of the Southwestern United States and northern Mexico (the other being the Rio Grande).  The 1450 mi river drains an expansive, arid watershed that encompasses parts of seven U.S. and two Mexican states.  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.  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. The historic town of Rocky Point was on the south side of the Missouri River in Fergus County, Montana, in the Missouri Breaks.  Rocky Point was located at a natural ford on the Missouri River.  In prehistoric times, American bisons trailed down through the breaks to Rocky Point to cross the river.  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.  In the 1870s and 1880s, Rocky Point had a store, hotel, two saloons, a feed stable, a blacksmith shop and a ferry.  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.  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.  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.  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.  Being on public lands the Rocky Point ford area may be approached by "dirt" roads and visited, but the roads become impassable when wet. The 2011 Missouri River floods was a flooding event on the Missouri River in the United States.  The flooding was triggered by record snowfall in the Rocky Mountains of Montana and Wyoming along with near-record spring rainfall in central and eastern Montana.  All six major dams along the Missouri River released record amounts of water to prevent overflow which led to flooding threatening several towns and cities along the river from Montana to Missouri; in particular Bismarck, North Dakota; Pierre, South Dakota; Dakota Dunes, South Dakota; South Sioux City, Nebraska, Sioux City, Iowa; Omaha, Nebraska; Council Bluffs, Iowa; Kansas City, Missouri; Jefferson City, Missouri, as well as putting many smaller towns at risk.  According to the National Weather Service, in the second half of the month of May 2011, almost a year's worth of rain fell over the upper Missouri River basin.  Extremely heavy rainfall in conjunction with an estimated 212 percent of normal snowpack in the Rocky Mountains contributed to this flooding event. The Muskwa River flows 257 km through northern British Columbia, Canada.  It is a major tributary of the Fort Nelson River - part of the Mackenzie River system.  The river rises at Fern Lake in the Bedaux Pass in the Northern Rocky Mountains.  From there, it flows generally east, then north, and then east again to meet with the Fort Nelson River just east of the town of Fort Nelson.  The river drops approximately 1100 m , its course taking it down the Rocky Mountain foothills through sub-alpine and boreal forest to meander across the forest and muskegs of the vast Liard River plains.  From mouth to headwater, prominent tributaries include the Prophet River, Tuchodi River, and Gathto Creek.  Much of the upper portions of this wilderness river and its watershed are located in the Northern Rocky Mountains Provincial Park, which is part of the larger Muskwa-Kechika Management Area.  The region is a popular wilderness recreation destination. The ecology of the Rocky Mountains is diverse due to the effects of a variety of environmental factors.  The Rocky Mountains are the major mountain range in western North America, running from the far north of British Columbia in Canada to New Mexico in the southwestern United States, climbing from the Great Plains at or below 1800 ft to peaks of over 14000 ft .  Temperature and rainfall varies greatly also and thus the Rockies are home to a mixture of habitats including the alpine, subalpine and boreal habitats of the Northern Rocky Mountains in British Columbia and Alberta, the coniferous forests of Montana and Idaho, the wetlands and prairie where the Rockies meet the plains, a different mix of conifers on the Yellowstone Plateau in Wyoming and in the high Rockies of Colorado and New Mexico, and finally the alpine tundra of the highest elevations. The Southern Rocky Mountains are a major subregion of the Rocky Mountains of North America located in the southeastern portion of the U.S. state of Wyoming, the central and western portions of Colorado, the northern portion of New Mexico, and extreme eastern portions of Utah.  The Southern Rocky Mountains are also commonly known as the Southern Rockies, and since the highest peaks are located in the State of Colorado, they are sometimes known as the Colorado Rockies, although many important ranges and peaks rise in the other three states.  The Southern Rockies include the highest mountain ranges of the Rocky Mountains and include all 30 of the highest major peaks of the Rockies.
Answer: Colorado River