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Anacostia River
The Anacostia River is a river in the Mid Atlantic region of the United States. It flows from Prince George's County in Maryland into Washington, D.C., where it joins with the Washington Channel to empty into the Potomac River at Buzzard Point. It is about 8.7 miles (14.0 km) long.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , Retrieved August 15, 2011 The name "Anacostia" derives from the area's early history as Nacotchtank, a settlement of Necostan or Anacostan Native Americans on the banks of the Anacostia River. Heavy pollution in the Anacostia and weak investment and development along its banks made it "D.C.'s forgotten river". More recently, however, private organizations; local businesses; and the D.C., Maryland, and federal governments have made efforts to reduce pollution and protect the ecologically valuable Anacostia watershed. Course The main stem of the Anacostia is formed by the confluence of the North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States National Arboretum
The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA Chief Botanist Frederick Vernon Coville. It is in size and is located northeast of the Capitol building, with entrances on New York Avenue, NE and R Street, NE. The campus's gardens, collections, and features are connected by roadways that are long in total. In addition to the main campus in Washington, D.C., there are research locations at the Henry A. Wallace Beltsville Agricultural Research Center in Beltsville, Maryland and in McMinville, Tennessee. The Arboretum functions as a major center of botanical research conducted by the USDA, including applied research on trees, shrubs, turf, and the development of new ornamental plants. In addition to a library and a historical collection (archive), the institution also has an extensive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Development
Land development is the alteration of landscape in any number of ways such as: * Changing landforms from a natural or semi-natural state for a purpose such as agriculture or housing * Subdividing real estate into lots, typically for the purpose of building homes * Real estate development or changing its purpose, for example by converting an unused factory complex into a condominium. Economic aspects In an economic context, land development is also sometimes advertised as land improvement or land amelioration. It refers to investment making land more usable by humans. For accounting purposes it refers to any variety of projects that increase the value of the process . Most are depreciable, but some land improvements are not able to be depreciated because a useful life cannot be determined. Home building and containment are two of the most common and the oldest types of development. In an urban context, land development furthermore includes: * Road construction ** Access ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery County, Maryland
Montgomery County is the most populous county in the state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010. The county seat and largest municipality is Rockville, although the census-designated place of Germantown is the most populous place within the county. Montgomery County, which adjoins Washington, D.C., is part of the Washington–Arlington–Alexandria, DC–VA–MD–WV metropolitan statistical area, which in turn forms part of the Baltimore–Washington combined statistical area. Most of the county's residents live in unincorporated locales, of which the most urban are Silver Spring and Bethesda, although the incorporated cities of Rockville and Gaithersburg are also large population centers, as are many smaller but significant places. The average household income in Montgomery County is among the highest in the United States. It has the highest percentage (29.2%) of residents over 25 years of age who hold po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watts Branch (Anacostia River)
Watts Branch is a tributary stream of the Anacostia River in Prince George's County, Maryland, and Washington, D.C. Course The headwaters of the stream originate in the Capitol Heights area of Prince George's County, and the branch flows roughly northwest for to the Anacostia, which drains to the Potomac River and the Chesapeake Bay. The watershed area of Watts Branch is about in Prince George's County and in Washington. Water quality Watts Branch is in a highly urbanized area, and its water quality has been rated as poor by government agencies. The stream has been polluted by urban runoff (stormwater), dumped trash and leaking sewer pipes. Much of the stream is in concrete channels or culverts. A variety of stream cleanup and restoration projects have been initiated by D.C. government, the United States Environmental Protection Agency (EPA) and other federal agencies, in cooperation with community organizations such as thAnacostia Riverkeeper thAnacostia Watershed Socie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paint Branch
Paint Branch is a tributaryU.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 stream of the Anacostia River that flows Southeastwards through Montgomery County and Prince George's County, Maryland. Specifically, its primary tributary is of the Northeast Branch, which flows to the Anacostia River, Potomac River and the Chesapeake Bay. The beginning elevation of the stream is 480 feet above sea level and it subsequently drops to 30 feet when its flows meet the Indian Creek in College Park, Maryland. The headwaters of Paint Branch are located near Spencerville (about north of Washington, D.C.) and the stream flows south for to its confluence with the Northeast Branch. The watershed area is and includes portions of the communities of Spencerville, Cloverly, Fairland, Colesville, White Oak and College Park, Maryland.Anacostia Watershed Restoration Partnership. Washington, DC"Paint Branch: Profile."Acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sligo Creek
Sligo Creek is a free-flowing tributary of the Northwest Branch of the Anacostia River in Maryland. (The Anacostia, in turn, feeds into the Potomac River and eventually empties into the Atlantic Ocean via Chesapeake Bay.) The creek is approximately long, with a drainage area of about . Geography The creek rises in the Kemp Mill section of Silver Spring in Montgomery County and joins with Northwest Branch near the city of Hyattsville in Prince George's County. The lower portion of the creek has been channelized. Elevations in the subwatershed range from above sea level to at the confluence with Northwest Branch; the average gradient for the course of the creek is 0.72%. Contributing streams that flow into the creek include Wheaton Branch, Comstock Branch, Takoma Park Branch, and Long Branch. Sligo Creek is one of the most heavily urbanized subwatersheds in the Anacostia watershed, with a population density of 7,081 people per mi2. 75% of the watershed is in Montgomery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tributary
A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean. The Irtysh is a chief tributary of the Ob river and is also the longest tributary river in the world with a length of . The Madeira River is the largest tributary river by volume in the world with an average discharge of . A confluence, where two or more bodies of water meet, usually refers to the joining of tributaries. The opposite to a tributary is a distributary, a river or stream that branches off from and flows away from the main stream. PhysicalGeography.net, Michael Pidwirny & S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottage City, Maryland
Cottage City, officially the Town of Cottage City, is a town in Prince George's County, Maryland, United States. Per the 2020 census, the population was 1,335. Cottage City is a small, quiet community lying between Eastern Avenue (the border with Washington), Brentwood, Colmar Manor, and the Anacostia River. Cottage City was developed, beginning in 1870, under the name of "The Highlands". The area was incorporated in 1924 as Cottage City. History Its history dates to pre-revolutionary America; old records indicate that the area was home to several of the Potomac River Indian tribes. With the coming of European settlers, the area became noted for its deep-water Anacostia River port, known then as Harrison's Landing. Contributing to the economy of Harrison's Landing was Moyer's Grist Mill located in Yarrow, the very first mill of its type between Baltimore and Alexandria, Virginia. Yarrow was renamed several times, but today we know Yarrow as Cottage City. Known as the Dark and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluence
In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers at Pittsburgh, forming the Ohio); or where two separated channels of a river (forming a river island) rejoin at the downstream end. Scientific study of confluences Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern ownstream of confluencesof increasing stream flow and decreasing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Stem
In hydrology, a mainstem (or trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". Water enters the mainstem from the river's drainage basin, the land area through which the mainstem and its tributaries flow.. A drainage basin may also be referred to as a ''watershed'' or ''catchment''. Hydrological classification systems assign numbers to tributaries and mainstems within a drainage basin. In the Strahler number, a modification of a system devised by Robert E. Horton in 1945, channels with no tributaries are called "first-order" streams. When two first-order streams meet, they are said to form a second-order stream; when two second-order streams meet, they form a third-order stream, and so on. In the Horton system, the entire mainstem of a drainage basin was assigned the highest number in that basin. However, in the Strahler system, adopted in 1957, only that part of the mainstem below the tributary of the next highest rank gets the highest num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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