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Piney Branch
Piney Branch is a tributary of Rock Creek in Washington, D.C. It is the largest tributary located entirely within the Washington city limits. It is spanned by the 16th Street Bridge, the country's first parabolic arch bridge. Course Located in the Northwest quadrant of Washington, D.C., the stream flows next to Piney Branch Parkway and empties into Rock Creek near the intersection of the parkway and Beach Drive, inside Rock Creek Park. Rock Creek drains to the Potomac River, which empties into the Chesapeake Bay. Piney Branch is a first order stream (i.e., no tributaries) with a surface length of . It is generally about wide and deep. It is the largest tributary located entirely within the Washington city limits. Watershed and water quality Piney Branch drains a watershed of . About five percent of the watershed consists of forested parkland near its surface stream. The rest of the area is mainly residential, with some light industrial zones. In 2010, the creek was listed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16th Street Bridge (Washington, D
16th Street Bridge may refer to: * 16th Street Bridge (Pittsburgh) in Pennsylvania *16th Street Bridge in Sacramento, California along California State Route 160 * 16th Street Bridge (Washington, D.C.) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
District Of Columbia Water And Sewer Authority
The District of Columbia Water and Sewer Authority (DC Water) provides drinking water, sewage collection, and sewage treatment for Washington, D.C. The utility also provides wholesale wastewater treatment services to several adjoining municipalities in Maryland and Virginia, and maintains more than 9,000 public fire hydrants in Washington, D.C. DC Water was founded in 1996 when the city government and the U.S. federal government established it as an independent authority of the city's government. Service area DC Water provides more than 600,000 residents, 16.6 million annual visitors, and 700,000 people employed in the District of Columbia with water, sewage collection, and treatment. The agency also provides wholesale wastewater treatment for 1.6 million people in Montgomery and Prince George's counties in Maryland, and Fairfax and Loudoun counties in Virginia. History Drinking water In 1852, Congress commissioned the construction of an aqueduct system to provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of Washington, D
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but lists are frequently written down on paper, or maintained electronically. Lists are "most frequently a tool", and "one does not ''read'' but only ''uses'' a list: one looks up the relevant information in it, but usually does not need to deal with it as a whole".Lucie Doležalová,The Potential and Limitations of Studying Lists, in Lucie Doležalová, ed., ''The Charm of a List: From the Sumerians to Computerised Data Processing'' (2009). Purpose It has been observed that, with a few exceptions, "the scholarship on lists remains fragmented". David Wallechinsky, a co-author of ''The Book of Lists'', described the attraction of lists as being "because we live in an era of overstimulation, especially in terms of information, and lists help us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Deal
The New Deal was a series of wide-reaching economic, social, and political reforms enacted by President Franklin D. Roosevelt in the United States between 1933 and 1938, in response to the Great Depression in the United States, Great Depression, which had started in 1929. Roosevelt introduced the phrase upon accepting the Democratic Party (United States), Democratic Party's presidential nomination in 1932 before winning the election in a landslide over incumbent Herbert Hoover, whose administration was viewed by many as doing too little to help those affected. Roosevelt believed that the depression was caused by inherent market instability and too little demand per the Keynesian model of economics and that massive government intervention was necessary to stabilize and rationalize the economy. During First 100 days of the Franklin D. Roosevelt presidency, Roosevelt's first hundred days in office in 1933 until 1935, he introduced what historians refer to as the "First New Deal", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crestwood (Washington, D
Crestwood may refer to: Places Australia * Crestwood, Queanbeyan, New South Wales * Crestwood, Sydney, New South Wales * Crestwood Estate, Thornlie, Western Australia Canada * Crestwood (Edmonton), a neighborhood in the City of Edmonton, Alberta United States (by state) * Crestwood Hills, Los Angeles, California * Crestwood (Valdosta, Georgia), listed on the NRHP in Georgia *Crestwood, Illinois * Crestwood, Kentucky *Crestwood, Missouri * Crestwood Historic District, Kansas City, MO, listed on the NRHP in Missouri * Crestwood Village, New Jersey * Crestwood (Yonkers), a neighborhood of Yonkers, New York * Crestwood, Portland, Oregon, a neighborhood of Portland, Oregon * Crestwood/Glen Cove, Houston, a neighborhood of Houston, Texas *Crestwood (Washington, D.C.), a neighborhood of Washington, D.C. Other uses * Crestwood Community School, in Eastleigh, Hampshire, England * Crestwood Preparatory College, a high school in Toronto, Ontario, Canada *Crestwood Publications Crestwood ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Pleasant, Washington, D
Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, Cornwall, England People * Mount (surname) * William L. Mounts (1862–1929), American lawyer and politician Computing and software * Mount (computing), the process of making a file system accessible * Mount (Unix), the utility in Unix-like operating systems which mounts file systems Books * ''Mount!'', a 2016 novel by Jilly Cooper Displays and equipment * Mount, a fixed point for attaching equipment, such as a hardpoint on an airframe * Mounting board, in picture framing * Mount, a hanging scroll for mounting paintings * Mount, to display an item on a heavy backing such as foamcore, e.g.: ** To pin a biological specimen, on a heavy backing in a stretched stable position for ease of dissection or display ** To prepare dead animal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debitage
In archaeology, debitage is all the material produced during the process of lithic reduction – the production of stone tools and weapons by knapping stone. This Assemblage (archaeology), assemblage may include the different kinds of lithic flakes and lithic blades, but most often refers to the shatter and production debris, and production rejects. Debitage analysis Debitage analysis, a sub-field of lithic analysis, considers the entire lithic waste assemblage. The analysis is undertaken by investigating differing patterns of debris morphology, size, and shape, among other things. This allows researchers to make more accurate assumptions regarding the purpose of the lithic reduction. Quarrying activities, core reduction, biface creation, tool manufacture, and retooling are believed to leave significantly different debitage assemblages. Lithic manufacture from a quarried source, or from found cobbles also leave different signatures. Some claim that they can determine the so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Henry Holmes
William Henry Holmes (December 1, 1846 – April 20, 1933), known as W. H. Holmes, was an American explorer, anthropologist, archaeologist, artist, scientific illustrator, cartographer, mountain climber, geologist and museum curator and director. Biography Early life and education William Henry Holmes was born on a farm near Cadiz, in Harrison County, Ohio, to Joseph and Mary Heberling Holmes on December 1, 1846. One of his forebears was the Rev. Obadiah Holmes, who emigrated to Salem, Massachusetts in 1638. William Henry Holmes graduated from the McNeely Normal School, Hopedale, Ohio in 1870 and afterward briefly taught drawing, painting, natural history, and geology at the school. In 1889 the school awarded him an honorary A.B. (Bachelor of Arts) degree. Later, in 1918, Holmes received an honorary Doctor of Science degree from The George Washington University, Washington, D.C. for his work and achievements. U. S. Geological Surveys Hayden Survey In 1871, he went to Wash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobble (geology)
A cobble (sometimes a cobblestone) is a clast of rock defined on the Udden–Wentworth scale as having a particle size of , larger than a pebble and smaller than a boulder. Other scales define a cobble's size differently. A rock made predominantly of cobbles is termed a conglomerate. Cobblestone is a building material based on cobbles. Etymology Cobbles, also called cobblestones, derive their name from the word cob, meaning a rounded lump. The term is further related to the German ', meaning ''head''. Chester Wentworth referred to cobbles as ''cobble bowlders'' in his 1922 paper that would become the basis for the Udden–Wentworth scale. Classifications Within the widely used Krumbein phi scale of grain sizes, cobbles are defined as clasts of rock ranging from −6 to −8 φ. This classification corresponds with the Udden–Wentworth size scale which defines cobbles as clasts with diameters from . On this scale, cobbles are larger than pebbles which measure in diame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartzite
Quartzite is a hard, non- foliated metamorphic rock that was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts, and hence quartzite is a metasandstone. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and red due to varying amounts of hematite. Other colors, such as yellow, green, blue and orange, are due to other minerals. The term ''quartzite'' is also sometimes used for very hard but unmetamorphosed sandstones that are composed of quartz grains thoroughly cemented with additional quartz. Such sedimentary rock has come to be described as orthoquartzite to distinguish it from metamorphic quartzite, which is sometimes called metaquartzite to emphasize its metamorphic origins. Quartzite is very resistant to chemical weathering and often forms ridges and resist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combined Sewer
A combined sewer is a type of gravity sewer with a system of pipes, tunnels, pump stations etc. to transport sewage and surface runoff, urban runoff together to a sewage treatment plant or disposal site. This means that during rain events, the sewage gets diluted, resulting in higher flowrates at the treatment site. Uncontaminated stormwater simply dilutes sewage, but runoff may dissolve or suspend virtually anything it contacts on roofs, streets, and storage yards. As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment, heavy metals, organic compounds, animal waste, and oil and Grease (lubricant), grease. Combined sewers may also receive dry weather drainage from landscape irrigation, construction dewatering, and washing buildings and sidewalks. Combined sewers can cause serious water pollution problems during combined sewer overflow (CSO) events when combined sewage and surface runoff flows exceed the capaci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land in which 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 the drainage divide line. A drainage basin's boundaries are determined by watershed delineation, a common task in environmental engineering and science. In a closed drainage basin, or endorheic basin, rather than flowing to the ocean, water converges toward the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
