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Upper Mississippi River
The Upper Mississippi River is the portion of the Mississippi River upstream of St. Louis, Missouri, United States, at the confluence of its main tributary, the Missouri River. History In terms of geologic and hydrographic history, the Upper Mississippi east and south of Fort Snelling is a portion of the now-extinct Glacial River Warren which carved the valley of the Minnesota River, permitting the immense Glacial Lake Agassiz to join the world's oceans at the Gulf of Mexico. The collapse of ice dams holding back Glacial Lake Duluth and Glacial Lake Grantsburg carved out the Dalles of the St. Croix River at Interstate Park. The Upper Mississippi River valley likely originated as an ice-marginal stream during the Pre-Illinoian Stage. The Driftless Area is a portion of North America left unglaciated at that ice age's height, hence not smoothed out or covered over by previous geological processes. Inasmuch as the Wisconsin glaciation formed lobes that met (and blocked) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harpers Ferry, Iowa
Harpers Ferry is a city in Taylor Township, Allamakee County, Iowa, United States. The population was 262 at the time of the 2020 census. History Harpers Ferry was platted in 1852; it was then called Winfield. In 1860, the name was changed to Harper's Ferry (with an apostrophe-''s''). Geography According to the United States Census Bureau, the city has a total area of , of which is land and is water. Demographics 2010 census As of the 2010 census, there were 328 people, 173 households, and 106 families living in the city. The population density was . There were 578 housing units at an average density of . The racial makeup of the city was 99.7% White and 0.3% African American. There were 173 households, of which 13.3% had children under the age of 18 living with them, 57.8% were married couples living together, 2.3% had a female householder with no husband present, 1.2% had a male householder with no wife present, and 38.7% were non-families. 32.9% of all households w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Driftless Area
The Driftless Area, a topographical and cultural region in the American Midwest, comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois. Never covered by ice during the last ice age, the area lacks the characteristic glacial deposits known as drift. Its landscape is characterized by steep hills, forested ridges, deeply carved river valleys, and karst geology with spring-fed waterfalls and cold-water trout streams. Ecologically, the Driftless Area's flora and fauna are more closely related to those of the Great Lakes region and New England than those of the broader Midwest and central Plains regions. The steep riverine landscape of both the Driftless Area proper and the surrounding Driftless-like region are the result of early glacial advances that forced preglacial rivers that flowed into the Great Lakes southward, causing them to carve a gorge across bedrock cuestas, thereby forming the modern incised u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigation Lock
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls. Locks are used to make a river more easily navigable, or to allow a canal to cross land that is not level. Later canals used more and larger locks to allow a more direct route to be taken. Pound lock A ''pound lock'' is most commonly used on canals and rivers today. A pound lock has a chamber with gates at both ends that control the level of water in the pound. In contrast, an earlier design with a single gate was known as a flash lock. Pound locks were first used in China during the Song Dynasty (960–1279 AD), having been pioneered by the Song politician and naval e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gateway Arch
The Gateway Arch is a monument in St. Louis, Missouri, United States. Clad in stainless steel and built in the form of a weighted catenary arch, it is the world's tallest arch and Missouri's tallest accessible building. Some sources consider it the tallest human-made monument in the Western Hemisphere. Built as a monument to the westward expansion of the United States and officially dedicated to "the American people", the Arch, commonly referred to as "The Gateway to the West", is a National Historic Landmark in Gateway Arch National Park and has become an internationally recognized symbol of St. Louis, as well as a popular tourist destination. The Arch was designed by Finnish-American architect Eero Saarinen in 1947; construction began on February 12, 1963, and was completed on October 28, 1965, at an overall cost of $13 million (equivalent to $ in 2018). The monument opened to the public on June 10, 1967. It is located at the site of the founding of St. Louis on the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gateway Arch National Park
Gateway Arch National Park is an American national park located in St. Louis, Missouri, near the starting point of the Lewis and Clark Expedition. The memorial was established to commemorate: *the Louisiana Purchase and subsequent westward movement of American explorers and pioneers; *the first civil government west of the Mississippi River; and *the debate over slavery raised by the ''Dred Scott'' case. The national park consists of the Gateway Arch, a steel catenary arch that has become the definitive icon of St. Louis; a park along the Mississippi River on the site of the earliest buildings of the city; the Old Courthouse, a former state and federal courthouse where the ''Dred Scott'' case originated; and the museum at the Gateway Arch. At 91 acres (36.8 hectares), it is the smallest national park in the United States. The immediate surroundings of the Gateway Arch were initially designated the Jefferson National Expansion Memorial (a national memorial) by executive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Effigy Mounds National Monument
Effigy Mounds National Monument preserves more than 200 prehistoric mounds built by pre-Columbian Mound Builder cultures, mostly in the first millennium CE, during the later part of the Woodland period of pre-Columbian North America. Numerous effigy mounds are shaped like animals, including bears and birds. The monument is located primarily in Allamakee County, Iowa, with a small part in Clayton County, Iowa, in the midwestern United States. The park's visitor center is located in Harpers Ferry, Iowa, just north of Marquette. In 2017, the Effigy Mounds were featured in the America the Beautiful Quarters Program. Mounds Prehistoric earthworks by mound builder cultures are common in the Midwest. However, mounds in the shape of mammals, birds, or reptiles, known as effigies, apparently were constructed primarily by peoples in what is now known as southern Wisconsin, northeast Iowa, and small parts of Minnesota and Illinois. An exception is the Great Serpent Mound in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi National River And Recreation Area
The Mississippi National River and Recreation Area is a and protected corridor along the Mississippi River through the Minneapolis–Saint Paul metro in the U.S. state of Minnesota, from the cities of Dayton and Ramsey, to just downstream of Hastings. This stretch of the upper Mississippi River includes natural, historical, recreational, cultural, scenic, scientific, and economic resources of national significance. This area is the only national park site dedicated exclusively to the Mississippi River. The Mississippi National River and Recreation Area is sometimes abbreviated as MNRRA (often pronounced like "minn-ruh") or MISS, the four letter code assigned to the area by the National Park Service. The Mississippi National River and Recreation Area is classified as one of four national rivers in the United States, and despite its name it is technically not one of the 40 national recreation areas. History The Mississippi National River and Recreation Area was established i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park Service
The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, most national monuments, and other natural, historical, and recreational properties with various title designations. The U.S. Congress created the agency on August 25, 1916, through the National Park Service Organic Act. It is headquartered in Washington, D.C., within the main headquarters of the Department of the Interior. The NPS employs approximately 20,000 people in 423 individual units covering over 85 million acres in all 50 states, the District of Columbia, and US territories. As of 2019, they had more than 279,000 volunteers. The agency is charged with a dual role of preserving the ecological and historical integrity of the places entrusted to its management while also making them available and accessible for public use and enjoyment. History Yellowstone National Park was created as the first nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iowa
Iowa () is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six states: Wisconsin to the northeast, Illinois to the east and southeast, Missouri to the south, Nebraska to the west, South Dakota to the northwest, and Minnesota to the north. During the 18th and early 19th centuries, Iowa was a part of French Louisiana and Spanish Louisiana; its state flag is patterned after the flag of France. After the Louisiana Purchase, people laid the foundation for an agriculture-based economy in the heart of the Corn Belt. In the latter half of the 20th century, Iowa's agricultural economy transitioned to a diversified economy of advanced manufacturing, processing, financial services, information technology, biotechnology, and green energy production. Iowa is the 26th most extensive in total area and the 31st most populous of the 50 U.S. states, with a popul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsin
Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. The bulk of Wisconsin's population live in areas situated along the shores of Lake Michigan. The largest city, Milwaukee, anchors its largest metropolitan area, followed by Green Bay and Kenosha, the third- and fourth-most-populated Wisconsin cities respectively. The state capital, Madison, is currently the second-most-populated and fastest-growing city in the state. Wisconsin is divided into 72 counties and as of the 2020 census had a population of nearly 5.9 million. Wisconsin's geography is diverse, having been greatly impacted by glaciers during the Ice Age with the exception of the Driftless Area. The Northern Highland and Western Upland along wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi Gorge Regional Park
Mississippi Gorge Regional Park is a regional park along the east and west bluffs of the Mississippi River in the cities of Minneapolis and Saint Paul in the U.S. state of Minnesota. The two-city park area is between Mississippi river miles 848 and 852, from just south of Northern Pacific Bridge Number 9 to just north of Minnehaha Regional Park, and lies within the Mississippi National River and Recreation Area. The park area protects scenic and natural areas of the Mississippi River gorge, the only true gorge along the entire length of the river. In Minneapolis, Mississippi Gorge Regional Park is managed by the Minneapolis Park and Recreation Board. In Saint Paul, the park area's official name is the Mississippi River Gorge Regional Park, and is managed by the Park and Recreation Department. The park (acreage for Minneapolis parkland only) provides access to the river and is popular for its hiking and biking paths on the bluffs. Among local residents, the gorge is known and ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minneapolis
Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins in timber and as the flour milling capital of the world. It occupies both banks of the Mississippi River and adjoins Saint Paul, the state capital of Minnesota. Prior to European settlement, the site of Minneapolis was inhabited by Dakota people. The settlement was founded along Saint Anthony Falls on a section of land north of Fort Snelling; its growth is attributed to its proximity to the fort and the falls providing power for industrial activity. , the city has an estimated 425,336 inhabitants. It is the most populous city in the state and the 46th-most-populous city in the United States. Minneapolis, Saint Paul and the surrounding area are collectively known as the Twin Cities. Minneapolis has one of the most extensive public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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