|
Columbia Island (Washington, D.C.)
Lady Bird Johnson Park, formerly known as Columbia Island until 1968, is an island located in the Potomac River in Washington, D.C., in the United States. It formed naturally as an extension of Analostan Island in the latter part of the 1800s, and over time erosion and flooding severed it from Analostan, now known as Theodore Roosevelt Island. The U.S. federal government deposited material dredged from the Potomac River on the island between 1911 and 1922, and again from 1925 to 1927. The island was also reshaped by the government at this time "to serve as the western terminus of Arlington Memorial Bridge and a symbolic entrance into the nation’s capital." Located within the park are the Lyndon Baines Johnson Memorial Grove, Navy – Merchant Marine Memorial, and the Columbia Island Marina. The island, park, memorials, and marina are part of the George Washington Memorial Parkway and administered by the National Park Service. Early formation of Columbia Island Columbia Islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potomac River
The Potomac River () is in the Mid-Atlantic (United States), Mid-Atlantic region of the United States and flows from the Potomac Highlands in West Virginia to Chesapeake Bay in Maryland. It is long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map. Retrieved August 15, 2011 with a Drainage basin, drainage area of , and is the fourth-largest river along the East Coast of the United States. More than 6 million people live within its drainage basin, watershed. The river forms part of the borders between Maryland and Washington, D.C., on the left descending bank, and West Virginia and Virginia on the right descending bank. Except for a small portion of its headwaters in West Virginia, the #North Branch Potomac River, North Branch Potomac River is considered part of Maryland to the low-water mark on the opposite bank. The South Branch Potomac River lies completely within the state of West Virginia except for its headwaters, which lie i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Corps Of Engineers
The United States Army Corps of Engineers (USACE) is the military engineering branch of the United States Army. A direct reporting unit (DRU), it has three primary mission areas: Engineer Regiment, military construction, and civil works. USACE has 37,000 civilian and military personnel, making it one of the world's largest public engineering, design, and construction management agencies. The USACE workforce is approximately 97% civilian, 3% active duty military. The civilian workforce is mainly located in the United States, Europe and in select Middle East office locations. Civilians do not function as active duty military and are not required to be in active war and combat zones; however, volunteer (with pay) opportunities do exist for civilians to do so. The day-to-day activities of the three mission areas are administered by a lieutenant general known as the chief of engineers/commanding general. The chief of engineers commands the Engineer Regiment, comprisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Creek And Potomac Parkway
The Rock Creek and Potomac Parkway, informally called the Rock Creek Parkway, is a parkway maintained by the National Park Service as part of Rock Creek Park in Washington, D.C. It runs next to the Potomac River and Rock Creek (Potomac River tributary), Rock Creek in a generally north–south direction, carrying four lanes of traffic from the Lincoln Memorial and Arlington Memorial Bridge north to a junction with Beach Drive near Connecticut Avenue at Calvert Street, N.W., just south of the National Zoological Park (United States), National Zoological Park. During rush hours, the parkway is converted to one-way traffic corresponding to the peak direction of travel: southbound in the morning and northbound in the afternoon. The Parkway was listed on the National Register of Historic Places on May 4, 2005. Built from 1923 to 1936, it is "one of the best-preserved examples of the earliest stage of motor parkway development". Route description The Parkway has two points of origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Mall
The National Mall is a Landscape architecture, landscaped park near the Downtown, Washington, D.C., downtown area of Washington, D.C., the capital city of the United States. It contains and borders a number of museums of the Smithsonian Institution, art galleries, cultural institutions, and various memorials, sculptures, and statues. It is administered by the National Park Service (NPS) of the United States Department of the Interior as part of the National Mall and Memorial Parks unit of the List of areas in the United States National Park System, National Park System. The park receives approximately 24 million visitors each year. Designed by Pierre L'Enfant, the "Grand Avenue" or Mall was to be a democratic and egalitarian space—unlike palace gardens, such as those at Versailles in France, that were paid for by the people but reserved for the use of a privileged few. The core area of the National Mall extends between the United States Capitol grounds to the east and the Wash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milton Bennett Medary
Milton Bennett Medary Jr. (February 6, 1874 – August 7, 1929) was an American architect from Philadelphia, practicing with the firm Zantzinger, Borie and Medary from 1910 until his death. Biography Medary attended the University of Pennsylvania for one year before joining the Philadelphia architecture firm of Frank Miles Day in 1891. While at the university, he entered a student competition and designed, (with Frank Miles Day and William C. Hays), the 1894 student union, Houston Hall. Credit for this design, however, was given to a faculty member, Frank Miles Day with Medary listed as an associate architect. Medary remained with Frank Miles Day until 1894, when he founded his own firm in Philadelphia, Field & Medary. That firm would become Zantzinger, Borie & Medary in 1910. He was employed in 1904 to rehabilitate Solitude Farm in West Whiteland Township, Pennsylvania. ''Note:'' This includes Medary began design work in 1908 on the Washington Memorial Chapel in Vall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Channel
Boundary Channel is a Channel (geography), channel off the Potomac River in Washington, D.C. The channel begins at the northwestern tip of Columbia Island (District of Columbia), Columbia Island extends southward between Columbia Island and the Virginia shoreline. It curves around the southern tip of Columbia Island before heading northeast to exit into the Potomac River. At the southwestern tip of Columbia Island, the Boundary Channel widens into the manmade Pentagon Lagoon. History of Boundary Channel Columbia Island is in part natural, and in part man-made. About 1818, Analostan Island (now known as Theodore Roosevelt Island) was largely rock and quite close to the D.C. shoreline. Due to deforestation and increased agricultural use upstream, the river eroded much of the northern bank of the Potomac River and widened the gap between Analostan Island and the shore. Simultaneously, large deposits of silt built up around Analostan Island. By 1838, Analostan had almost doubled in le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Channel Bridge
Boundary Channel is a channel off the Potomac River in Washington, D.C. The channel begins at the northwestern tip of Columbia Island extends southward between Columbia Island and the Virginia shoreline. It curves around the southern tip of Columbia Island before heading northeast to exit into the Potomac River. At the southwestern tip of Columbia Island, the Boundary Channel widens into the manmade Pentagon Lagoon. History of Boundary Channel Columbia Island is in part natural, and in part man-made. About 1818, Analostan Island (now known as Theodore Roosevelt Island) was largely rock and quite close to the D.C. shoreline. Due to deforestation and increased agricultural use upstream, the river eroded much of the northern bank of the Potomac River and widened the gap between Analostan Island and the shore. Simultaneously, large deposits of silt built up around Analostan Island. By 1838, Analostan had almost doubled in length toward the south. By 1884, the new southern part of A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arlington Ridge Road
Arlington Ridge Road (originally known as Mount Vernon Avenue) is a street through residential areas and business districts in Arlington County, Virginia in the United States. South Arlington Ridge Road is roughly 1.5 miles in length and extends from Prospect Hill Park/Army-Navy Drive in the north to Glebe Road and Four Mile Run creek in the south. As it crosses the creek it turns into Mount Vernon Avenue. Arlington Ridge Road was first constructed in 1840, and formerly extended north through Arlington National Cemetery to Rosslyn, Virginia near Francis Scott Key Bridge and the Potomac River. Arlington Ridge Road was a single street from 1840 to 1966. After the closure of the central portion of the road, two sections were created: South Arlington Ridge Road, and North Arlington Ridge Road. The northern road began at Lee Boulevard (now known as Arlington Boulevard) and proceeded north along what is now Wilson Boulevard to 19th Street North. It incorporated a portion of what was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Agriculture
The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, promotes agricultural trade and production, works to assure food safety, protects natural resources, fosters rural communities and works to end hunger in the United States and internationally. It is headed by the secretary of agriculture, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Brooke Rollins, who has served since February 13, 2025. Approximately 71% of the USDA's $213 billion budget goes towards nutrition assistance programs administered by the Food and Nutrition Service (FNS). The largest component of the FNS budget is the Supplemental Nutrition Assistance Program (formerly known as the 'Food Stamp' program), which is the cornerstone of USDA's nutrition assistance. The United Stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Capital Planning Commission
The National Capital Planning Commission (NCPC) is a United States government, U.S. government executive branch agency that provides Urban planning, planning guidance for Washington, D.C., and the surrounding National Capital Region. Through its planning policies and review of development proposals, the Commission seeks to protect and enhance the resources of the U.S. national capital. The 12-member commission includes three President of the United States, presidential appointees, of which one must be from Virginia and one from Maryland, the List of mayors of Washington, D.C., mayor of Washington, D.C., the chair of the Council of the District of Columbia, two mayoral appointees, and the chair of the U.S. House of Representatives, House and United States Senate, Senate committees with review authority over the District. Other commission members include the heads of the three major land holding agencies, which are the United States Department of Defense, Department of Defense, the Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Commission Of Fine Arts
The U.S. Commission of Fine Arts (CFA) is an independent agency of the federal government of the United States, and was established in 1910. The CFA has review (but not approval) authority over the "design and aesthetics" of all construction within Washington, D.C. In accordance with the Old Georgetown Act, the CFA appoints the Old Georgetown Board. The Old Georgetown Board has design review authority over all semipublic and private structures within the boundaries of the Georgetown Historic District. The CFA was granted approval (not just review) authority by the Shipstead-Luce Act over the design and height of public and private buildings which front or abut the grounds of the United States Capitol, the grounds of the White House, Pennsylvania Avenue NW extending from the Capitol to the White House, Lafayette Square, Rock Creek Park, the National Zoological Park, the Rock Creek and Potomac Parkway, Potomac Park, and the National Mall and its constituent parks. The CFA ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levee
A levee ( or ), dike (American English), dyke (British English; see American and British English spelling differences#Miscellaneous spelling differences, spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural or artificial, alongside the river banks, banks of a river, often intended to flood control, protect against flooding of the area adjoining the river. It is usually soil, earthen and often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. Naturally occurring levees form on river floodplains following flooding. Sediment and alluvium are deposition (geology), deposited on the banks and settle, forming a ridge that increases the river channel's capacity. Alternatively, levees can be artificially constructed from fill dirt, fill, designed to regulate water levels. In some circumstances, artificial levees can be environmental degradation, environmentally damaging. Ancient civilization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
