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89-815: The Bombala River , a perennial river of the Snowy River catchment, is located in the Monaro region of New South Wales , Australia . The Bombala River rises within the Kybeyan Range, part of the Great Dividing Range , on the southwestern slopes of Brown Mountain . The river flows generally southwest, joined by eight tributaries including the Undowah River and the Coolumbooka River , before reaching its confluence with

178-652: A referendum on the sale held in Denmark in December 1916 in which voters approved the decision to sell. The deal was finalized on January 17, 1917, when the United States and Denmark exchanged their respective treaty ratifications. The United States took possession of the islands on March 31, 1917, and the territory was renamed the Virgin Islands of the United States . Every year, Transfer Day

267-616: A tropical climate . The U.S. Virgin Islands consist of the main islands of Saint Croix , Saint John , and Saint Thomas and 50 other surrounding minor islands and cays . The total land area of the territory is 133.73 square miles (346.36 km ). The territory's capital is Charlotte Amalie on the island of St. Thomas. Previously known as the Danish West Indies of the Kingdom of Denmark–Norway (from 1754 to 1814) and

356-403: A bed armor layer, and other depositional features, plus well defined banks due to bank erosion, are good identifiers when assessing for perennial streams. Particle size will help identify a perennial stream. Perennial streams cut through the soil profile, which removes fine and small particles. By assessing areas for relatively coarse material left behind in the stream bed and finer sediments along

445-668: A complex period in which the islands were disputed among Spain, France, Britain and the Netherlands. Denmark–Norway also took an interest in the islands, and the Danish West India Company settled on St. Thomas in 1672 and St. John in 1694, later purchasing St. Croix from France in 1733. The islands became royal Danish colonies in 1754, named the Danish West Indian Islands ( Danish : De dansk-vestindiske øer ). Initially

534-658: A continuous aquatic habitat until they reach maturity. Crayfish and other crustaceans , snails , bivalves (clams), and aquatic worms also indicate the stream is perennial. These require a persistent aquatic environment for survival. Fish and amphibians are secondary indicators in assessment of a perennial stream because some fish and amphibians can inhabit areas without persistent water regime. When assessing for fish, all available habitat should be assessed: pools, riffles, root clumps and other obstructions. Fish will seek cover if alerted to human presence, but should be easily observed in perennial streams. Amphibians also indicate

623-407: A continuous or intermittent stream. The same non-perennial channel might change characteristics from intermittent to ephemeral over its course. Washes can fill up quickly during rains, and there may be a sudden torrent of water after a thunderstorm begins upstream, such as during monsoonal conditions. In the United States, an intermittent or seasonal stream is one that only flows for part of

712-615: A creek, especially one that is fed by a spring or seep . It is usually small and easily forded . A brook is characterised by its shallowness. A creek ( / k r iː k / ) or crick ( / k r ɪ k / ): In hydrography, gut is a small creek; this is seen in proper names in eastern North America from the Mid-Atlantic states (for instance, The Gut in Pennsylvania, Ash Gut in Delaware, and other streams) down into

801-422: A drainage network. Although each tributary has its own source, international practice is to take the source farthest from the river mouth as the source of the entire river system, from which the most extended length of the river measured as the starting point is taken as the length of the whole river system, and that furthest starting point is conventionally taken as the source of the whole river system. For example,

890-542: A few months of negotiations, a selling price of $ 25 million in United States gold coin was agreed, equivalent to $ 700 million in 2023 dollars. At the same time, the economics of continued possession weighed heavily on the minds of Danish decision makers, and a consensus in favor of selling emerged in the Danish parliament. The Treaty of the Danish West Indies was signed on August 4, 1916, with

979-540: A larger stream. Common terms for individual river distributaries in English-speaking countries are arm and channel . There are a number of regional names for a stream. A stream's source depends on the surrounding landscape and its function within larger river networks. While perennial and intermittent streams are typically supplied by smaller upstream waters and groundwater, headwater and ephemeral streams often derive most of their water from precipitation in

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1068-617: A part of the U.S. Virgin Islands territory until 1996, when 50 acres (20 ha) of land was transferred to the territorial government. The remaining 200 acres (81 ha) of the island was purchased from the United States Department of the Interior in May ;2005 for $ 10, a transaction that marked the official change in jurisdiction. In 1966, Hess Oil began construction on an oil refinery. Until February 2012,

1157-404: A path into mines or other underground chambers. According to official U.S. definitions, the channels of intermittent streams are well-defined, as opposed to ephemeral streams, which may or may not have a defined channel, and rely mainly on storm runoff, as their aquatic bed is above the water table . An ephemeral stream does not have the biological, hydrological, and physical characteristics of

1246-412: A perennial stream and include tadpoles , frogs , salamanders , and newts . These amphibians can be found in stream channels, along stream banks, and even under rocks. Frogs and tadpoles usually inhabit shallow and slow moving waters near the sides of stream banks. Frogs will typically jump into water when alerted to human presence. Well defined river beds composed of riffles, pools, runs, gravel bars,

1335-483: A perennial stream, fine sediment may cling to riparian plant stems and tree trunks. Organic debris drift lines or piles may be found within the active overbank area after recent high flow. Streams, headwaters, and streams flowing only part of the year provide many benefits upstream and downstream. They defend against floods, remove contaminants, recycle nutrients that are potentially dangerous as well as provide food and habitat for many forms of fish. Such streams also play

1424-551: A public awareness campaign aimed at assisting the people of the United States Virgin Islands with their inalienable right to self-determination and in gaining a better understanding of the options for self-determination". In March 2023, a poll conducted by Suffolk University among USVI residents revealed 63% supported the territory becoming a U.S. state while 23% opposed. Respondents were also asked about becoming an independent country, which 58% rejected

1513-406: A slow-moving wetted channel or stagnant area. This is evidence that iron-oxidizing bacteria are present, indicating persistent expression of oxygen-depleted ground water. In a forested area, leaf and needle litter in the stream channel is an additional indicator. Accumulation of leaf litter does not occur in perennial streams since such material is continuously flushed. In the adjacent overbank of

1602-486: A stream as intermittent, "showing interruptions in time or space". Generally, streams that flow only during and immediately after precipitation are termed ephemeral . There is no clear demarcation between surface runoff and an ephemeral stream, and some ephemeral streams can be classed as intermittent—flow all but disappearing in the normal course of seasons but ample flow (backups) restoring stream presence — such circumstances are documented when stream beds have opened up

1691-424: A stream is a critical factor in determining its character and is entirely determined by its base level of erosion. The base level of erosion is the point at which the stream either enters the ocean, a lake or pond, or enters a stretch in which it has a much lower gradient, and may be specifically applied to any particular stretch of a stream. In geological terms, the stream will erode down through its bed to achieve

1780-524: A thin layer called sheet wash, combined with a network of tiny rills, which together form the sheet runoff; when this water is focused in a channel, a stream is born. Some rivers and streams may begin from lakes or ponds. Freshwater's primary sources are precipitation and mountain snowmelt. However, rivers typically originate in the highlands, and are slowly created by the erosion of mountain snowmelt into lakes or rivers. Rivers usually flow from their source topographically, and erode as they pass until they reach

1869-627: A vital role in preserving our drinking water quality and supply, ensuring a steady flow of water to surface waters and helping to restore deep aquifers. The extent of land basin drained by a stream is termed its drainage basin (also known in North America as the watershed and, in British English, as a catchment). A basin may also be composed of smaller basins. For instance, the Continental Divide in North America divides

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1958-417: Is Stacey Plaskett , a Democrat. Like other territories, the U.S. Virgin Islands does not have U.S. senators . At the territorial level, fifteen senators —seven from the district of St. Croix, seven from the district of St. Thomas and St. John, and one senator at large who must be a resident of St. John—are elected for two-year terms to the unicameral Virgin Islands legislature . There

2047-435: Is a stream that branches off and flows away from a main stream channel, and the phenomenon is known as river bifurcation . Distributaries are common features of river deltas , and are often found where a valleyed stream enters wide flatlands or approaches the coastal plains around a lake or an ocean . They can also occur inland, on alluvial fans , or where a tributary stream bifurcates as it nears its confluence with

2136-483: Is no limit as to the number of terms they can serve. The U.S. Virgin Islands have elected a territorial governor every four years since 1970. Previous governors were appointed by the president of the United States . The U.S. Virgin Islands have a Superior Court and Supreme Court . The District Court of the Virgin Islands is responsible for cases brought under federal law , and the U.S. attorney for

2225-475: Is recognized as a holiday, to commemorate the acquisition of the islands by the United States. Rear Admiral James H. Oliver was the first American governor of the islands. Paul Martin Pearson , the first civilian governor, was appointed by Herbert Hoover and was inaugurated March 18, 1931. U.S. citizenship was granted to many inhabitants of the islands in 1927 and 1932. The Danish West Indian daler

2314-425: Is sometimes termed a "young" or "immature" stream, and the later state a "mature" or "old" stream. Meanders are looping changes of direction of a stream caused by the erosion and deposition of bank materials. These are typically serpentine in form. Typically, over time the meanders gradually migrate downstream. If some resistant material slows or stops the downstream movement of a meander, a stream may erode through

2403-456: Is usually called a creek and marked on topographic maps with a solid blue line. There are five generic classifications: "Macroinvertebrate" refers to easily seen invertebrates , larger than 0.5 mm, found in stream and river bottoms. Macroinvertebrates are larval stages of most aquatic insects and their presence is a good indicator that the stream is perennial. Larvae of caddisflies , mayflies , stoneflies , and damselflies require

2492-896: The Aboriginal word meaning "meeting of the water", presumably referring to the confluence of the Bombala River with the Coolumbooka River, at Bombala; and the confluence with the Undowah River, a few kilometers upstream. 36°50′S 148°58′E  /  36.833°S 148.967°E  / -36.833; 148.967 Perennial stream The flow of a stream is controlled by three inputs – surface runoff (from precipitation or meltwater ), daylighted subterranean water , and surfaced groundwater ( spring water ). The surface and subterranean water are highly variable between periods of rainfall. Groundwater, on

2581-538: The Anegada Passage , including Charlotte Amalie (the capital) and Christiansted . Like most Caribbean islands, most of the islands of the Virgin Islands, including St. Thomas and St. John, are volcanic in origin and hilly. The highest point is Crown Mountain on St. Thomas at 1,555 feet (474 m). The easternmost point of the United States is Point Udall (U.S. Virgin Islands) on St. Croix. St. Croix,

2670-615: The Delegate River approximately 17 kilometres (11 mi) west of Bombala . The river descends 535 metres (1,755 ft) over its 87 kilometres (54 mi) course . In its upper reaches, the Bombala River is crossed by the Snowy Mountains Highway near Brown Mountain; while the Monaro Highway crosses the meandering river at several locations north of Bombala. The name of the river is derived from

2759-508: The Hovensa plant , located on St. Croix, was one of the world's largest petroleum refineries, refining 494,000 bbl/d (78,500 m /d), and contributed about 20% of the territory's GDP. The refinery ceased operation in 2012, and the facility stopped exporting petroleum products in 2014. In the final year of full refinery operations, the value of exported petroleum products was $ 12.7 billion (2011 fiscal year). Since refining ended,

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2848-691: The Tombigbee River basin. Continuing in this vein, a component of the Mississippi River basin is the Ohio River basin, which in turn includes the Kentucky River basin, and so forth. Stream crossings are where streams are crossed by roads , pipelines , railways , or any other thing which might restrict the flow of the stream in ordinary or flood conditions. Any structure over or in a stream which results in limitations on

2937-597: The Virgin Islands . The U.S. Virgin Islands were originally inhabited by the Ciboney and Arawaks , with some scholars thinking that the islands were inhabited from as early as 1000 BC. The Kalinago (Island Caribs) arrived around the mid-15th century AD. Christopher Columbus, on his second voyage in 1493, is thought to have been the first European to see the islands, giving them their current name. The Spanish later settled in 1555, with English and French settlers arriving on St. Croix from 1625. There followed

3026-478: The president of the United States . People born in the U.S. Virgin Islands derive their U.S. citizenship from congressional statute. The U.S. Democratic and Republican parties allow U.S. Virgin Islands citizens to vote in their presidential primary elections for delegates to the respective national conventions. The main political parties in the U.S. Virgin Islands themselves are the Democratic Party of

3115-480: The velocity of the stream. A perennial stream is one which flows continuously all year. Some perennial streams may only have continuous flow in segments of its stream bed year round during years of normal rainfall. Blue-line streams are perennial streams and are marked on topographic maps with a solid blue line. The word "perennial" from the 1640s, meaning "evergreen," is established in Latin perennis, keeping

3204-497: The 34-million-barrel tank farm has operated as a crude oil and petrochemical storage facility for third-party customers. The refinery's closure provoked a local economic crisis. Following the acquisition of the 1,500-acre complex by ArcLight Capital Partners, LLC, in 2016, Limetree Bay Ventures, LLC, was formed, and is currently executing a project to refurbish and restart the refinery, with a processing capability of up to 200,000 bbl/d (32,000 m /d). Hurricane Hugo struck

3293-647: The British Virgin Islands. The territory consists of three main islands: St. Thomas , St. John , and St. Croix , as well as several dozen smaller islands . The main islands have nicknames often used by locals: "Twin City" (St. Croix), "Rock City" (St. Thomas), and "Love City" (St. John). The combined land area of the islands is roughly twice the size of Washington, D.C. . The U.S. Virgin Islands are known for their white sand beaches , including Magens Bay and Trunk Bay , and deepwater harbors along

3382-704: The Caribbean (for instance, Guinea Gut , Fish Bay Gut , Cob Gut , Battery Gut and other rivers and streams in the United States Virgin Islands , in Jamaica (Sandy Gut, Bens Gut River, White Gut River), and in many streams and creeks of the Dutch Caribbean ). A river is a large natural stream that is much wider and deeper than a creek and not easily fordable, and may be a navigable waterway . The linear channel between

3471-732: The District of the Virgin Islands can bring federal criminal cases there. The Superior Court is responsible for hearing cases under U.S. Virgin Islands law at the trial level, and the Supreme Court is responsible for appeals from the Superior Court for all appeals filed on or after January 29, 2007. (Appeals filed prior to that date were heard by the Appellate Division of the District Court.) Appeals from

3560-493: The French forces could capture them. It is estimated that by 1775, slaves outnumbered the Danish settlers by a ratio of 8:1. After another slave rebellion occurred on St. Croix, slavery was abolished by Governor Peter von Scholten on July 3, 1848, now celebrated as Emancipation Day . Over the following years, strict labor laws were implemented several times, leading to the 1878 St. Croix labor riot . With

3649-403: The U.S. Virgin Islands in 1989, causing catastrophic physical and economic damage, particularly on the island of St. Croix. The territory was again struck by Hurricane Marilyn in 1995, killing eight people and causing more than $ 2 billion in damage. The islands were again struck by hurricanes Bertha , Georges , Lenny , and Omar in 1996, 1998, 1999, and 2008, respectively, but damage

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3738-614: The U.S. Virgin Islands must be admitted to the Virgin Islands Bar through either a bar exam or meeting certain requirements for admission on the basis of experience in another reciprocal jurisdiction. The bar exam consists of a standard American Bar Association multistate exam and a local law essay exam. As in the mainland United States, attorneys practice in a variety of settings including private law firms, government, or corporate offices. On October 21, 1976, President Gerald Ford signed Pub. L.   94–584 authorizing

3827-532: The USVI is not a state and Congress has not determined otherwise, the federal district court is an Article IV tribunal , subject to the authority of the United States secretary of the interior and without lifetime appointment for judges. Elements of Danish law have all been repealed, except for two 1914 laws having to do with customs and ship duties for St. Thomas and St. John. Attorneys who practice law in

3916-451: The United States, the Virgin Islands elects a delegate who can participate in debates in the House of Representatives but cannot vote. Tourism and related categories are the primary economic activities. The islands were named Santa Úrsula y las Once Mil Vírgenes by Christopher Columbus in 1493 after the legend of Saint Ursula and the 11,000 virgins. The name was later shortened to

4005-566: The Virgin Islands , the Independent Citizens Movement , and the Republican Party of the Virgin Islands . Additional candidates run as independents. At the national level, the U.S. Virgin Islands elect a delegate to Congress from their at-large congressional district . The elected delegate, while able to vote in committee, cannot participate in floor votes. The current House of Representatives delegate

4094-698: The Virgin Islands were damaged or destroyed and 13,000 of those buildings had lost their roofs. The Luis Hospital suffered roof damage and flooding, but remained operational. The U.S. Virgin Islands are in the Atlantic Ocean , about 40 miles (64 km) east of Puerto Rico and immediately west of the British Virgin Islands . They share the Virgin Islands archipelago with the Puerto Rican Virgin Islands of Vieques and Culebra (administered by Puerto Rico), and

4183-478: The Virgin Islands. However, in June 2009, Governor John de Jongh Jr. rejected the resulting constitutional draft, saying the terms of the document would "violate federal law, fail to defer to federal sovereignty and disregard basic civil rights". A lawsuit filed by members of the convention to force Governor de Jongh to forward the document to President Barack Obama was ultimately successful. President Obama forwarded

4272-533: The atmosphere either by evaporation from soil and water bodies, or by plant evapotranspiration. By infiltration some of the water sinks into the earth and becomes groundwater, much of which eventually enters streams. Most precipitated water is partially bottled up by evaporation or freezing in snow fields and glaciers. The majority of the water flows as a runoff from the ground; the proportion of this varies depending on several factors, such as climate, temperature, vegetation, types of rock, and relief. This runoff begins as

4361-409: The authorities in the islands. The United States began to take an interest in the islands, and in 1867 a treaty to sell St. Thomas and St. John to the U.S. was agreed but never effected. A number of reforms aimed at reviving the islands' economy were attempted, but none had great success. A second draft treaty to sell the islands to the United States was negotiated in 1902 but was defeated in

4450-525: The base level of erosion throughout its course. If this base level is low, then the stream will rapidly cut through underlying strata and have a steep gradient, and if the base level is relatively high, then the stream will form a flood plain and meander. Typically, streams are said to have a particular elevation profile , beginning with steep gradients, no flood plain, and little shifting of channels, eventually evolving into streams with low gradients, wide flood plains, and extensive meanders. The initial stage

4539-597: The base stage of erosion. The scientists have offered a way based on data to define the origin of the lake. A classified sample was the one measured by the Chinese researchers from the University of Chinese Academy of Sciences. As an essential symbol of the river formation environment, the river source needs an objective and straightforward and effective method of judging . A calculation model of river source catchment area based on critical support flow (CSD) proposed, and

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4628-610: The boundary of the North American Plate and the Caribbean Plate . Natural hazards include earthquakes , hurricanes and tsunamis. The U.S. Virgin Islands contain the Leeward Islands moist forests and Leeward Islands xeric scrub terrestrial ecoregions. The United States Virgin Islands experience a tropical climate , with little seasonal change throughout the year. Rainfall is concentrated in

4717-467: The currency was the Danish West Indian rigsdaler , replaced by the daler in 1849. The islands proved ideal for sugar plantations: sugarcane , produced by enslaved Africans, drove the islands' economy during the 18th and early 19th centuries. Other plantation crops included cotton and indigo dye . During the 17th and 18th centuries, a sizable Jewish community also began to settle on

4806-456: The embargo of Americans on travel to Cuba , the U.S. Virgin Islands became a popular tourist destination. In 1970, Virgin Islanders elected their first governor, Melvin H. Evans , and from 1976 the islands began work on creating their own constitution. Water Island , a small island to the south of St. Thomas, was initially administered by the U.S. federal government and did not become

4895-685: The federal District Court are heard by the United States Court of Appeals for the Third Circuit , located in Philadelphia , Pennsylvania . District Court judges are appointed by the U.S. president, while Superior Court and Supreme Court judges are appointed by the governor. As of 2019, the USVI courts apply both American common law and the 2019 US Virgin Islands Code as passed by the territorial legislature . Because

4984-707: The flow is reduced to a trickle or less. Typically torrents have Apennine rather than Alpine sources, and in the summer they are fed by little precipitation and no melting snow. In this case the maximum discharge will be during the spring and autumn. An intermittent stream can also be called a winterbourne in Britain, a wadi in the Arabic -speaking world or torrente or rambla (this last one from arabic origin) in Spain and Latin America. In Australia, an intermittent stream

5073-447: The form of rain and snow. Most of this precipitated water re-enters the atmosphere by evaporation from soil and water bodies, or by the evapotranspiration of plants. Some of the water proceeds to sink into the earth by infiltration and becomes groundwater, much of which eventually enters streams. Some precipitated water is temporarily locked up in snow fields and glaciers , to be released later by evaporation or melting. The rest of

5162-405: The high-sun period (May through October), while in the winter the northeast trade winds prevail. Summer and winter high temperatures differ by 5 °F (3 °C) or less on average. The U.S. Virgin Islands are an organized, unincorporated United States territory . Although those born on the islands are U.S. citizens , U.S. Virgin Islanders residing in the territory are ineligible to vote for

5251-447: The hurricane, and estimates for St. John and St. Thomas were somewhat less. The hurricane killed two people, both in their homes: one person drowned and another was trapped by a mudslide. A third person had a fatal heart attack during the hurricane. The hurricane caused extensive and severe damage to St. Croix. After both hurricanes, the office of Virgin Islands congresswoman Stacey Plaskett stated that 90% of buildings in

5340-407: The immediate vicinity of a stream is called a riparian zone . Given the status of the ongoing Holocene extinction , streams play an important corridor role in connecting fragmented habitats and thus in conserving biodiversity . The study of streams and waterways in general is known as surface hydrology and is a core element of environmental geography . A brook is a stream smaller than

5429-451: The independent Kingdom of Denmark (from 1814 to 1917), they were sold to the United States by Denmark for $ 25,000,000 in the 1917 Treaty of the Danish West Indies ($ 595 million in 2023) and have since been an organized, unincorporated United States territory . The U.S. Virgin Islands are organized under the 1954 Revised Organic Act of the Virgin Islands and have since held five constitutional conventions. As with other territories in

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5518-421: The island's west end. The British Virgin Islands and the other two U.S. Virgin Islands, St. John and St. Thomas, were far enough northeast to avoid the worst from Maria, but were still massively impacted, with great destruction everywhere. A wind gust to 86 mph (138 km/h) was reported at St. Thomas. Weather stations on St. Croix recorded 5 and 10 inches (130 and 250 mm) of rain from

5607-601: The islands. In 1733, St. John was the site of one of the first significant slave rebellions in the New World when Akan – Akwamu slaves from the Gold Coast (modern Ghana ) took over the island for six months. The Danish were able to defeat the enslaved Africans with help from the French in Martinique . Instead of allowing themselves to be recaptured, more than a dozen of the ringleaders shot themselves before

5696-532: The lake has significant feeder rivers. The Kagera River, which flows into Lake Victoria near Bukoba's Tanzanian town , is the longest feeder, though sources do not agree on which is the Kagera's longest tributary and therefore the Nile's most remote source itself. To qualify as a stream, a body of water must be either recurring or perennial. Recurring (intermittent) streams have water in the channel for at least part of

5785-728: The largest of the U.S. Virgin Islands, lies to the south and has a flatter terrain because of its coral origin. The National Park Service manages more than half of St. John, nearly all of Hassel Island , and many acres of coral reef . There are several national park sites, such as the Virgin Islands National Park , Virgin Islands Coral Reef National Monument , Buck Island Reef National Monument , Christiansted National Historic Site , and Salt River Bay National Historical Park and Ecological Preserve . The U.S. Virgin Islands lie on

5874-683: The mainly easterly-draining Atlantic Ocean and Arctic Ocean basins from the largely westerly-flowing Pacific Ocean basin. The Atlantic Ocean basin, however, may be further subdivided into the Atlantic Ocean and Gulf of Mexico drainages. (This delineation is termed the Eastern Continental Divide .) Similarly, the Gulf of Mexico basin may be divided into the Mississippi River basin and several smaller basins, such as

5963-412: The meaning as "everlasting all year round," per "over" plus annus "year." This has been proved since the 1670s by the "living years" in the sense of botany. The metaphorical sense of "enduring, eternal" originates from 1750. They are related to "perennial." See biennial for shifts in vowels. Perennial streams have one or more of these characteristics: Absence of such characteristics supports classifying

6052-599: The movement of fish or other ecological elements may be an issue. United States Virgin Islands The United States Virgin Islands , officially the Virgin Islands of the United States , are a group of Caribbean islands and a territory of the United States . The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles . The islands have

6141-453: The neck between two legs of a meander to become temporarily straighter, leaving behind an arc-shaped body of water termed an oxbow lake or bayou . A flood may also cause a meander to be cut through in this way. The stream load is defined as the solid matter carried by a stream. Streams can carry sediment, or alluvium. The amount of load it can carry (capacity) as well as the largest object it can carry (competence) are both dependent on

6230-596: The origin of the Nile River is the confluence of the White Nile and the Blue Nile, but the source of the whole river system is in its upper reaches. If there is no specific designation, "length of the Nile" refers to the "river length of the Nile system", rather than to the length of the Nile river from the point where it is formed by a confluence of tributaries. The Nile's source is often cited as Lake Victoria, but

6319-430: The other hand, has a relatively constant input and is controlled more by long-term patterns of precipitation. The stream encompasses surface, subsurface and groundwater fluxes that respond to geological, geomorphological, hydrological and biotic controls. Streams are important as conduits in the water cycle , instruments in groundwater recharge , and corridors for fish and wildlife migration. The biological habitat in

6408-415: The parallel ridges or bars on a shoreline beach or river floodplain, or between a bar and the shore. Also called a swale . A tributary is a contributory stream to a larger stream, or a stream which does not reach a static body of water such as a lake , bay or ocean but joins another river (a parent river). Sometimes also called a branch or fork. A distributary , or a distributary channel ,

6497-424: The people of the United States Virgin Islands to organize a government pursuant to a constitution, which would be automatically approved if Congress did not act within 60 days. In 2004, an act was passed by the legislature of the Virgin Islands calling for a fifth constitutional convention, and 30 delegates to the convention were elected in 2007. On May 26, 2009, the convention adopted a proposed Constitution of

6586-410: The plantations no longer as profitable, Danish settlers began to abandon their estates, causing a significant drop in population and the overall economy. Additionally, the 1867 hurricane and earthquake and tsunami further impacted the economy. For the remainder of the period of Danish rule, the islands were not economically viable and significant transfers had to be made from the Danish state budget to

6675-591: The proposal to Congress in May 2010, along with a report noting concerns raised by the United States Department of Justice that the powers sought exceeded what would be considered allowable under territorial status and restating the issues noted by Governor de Jongh. A U.S. Congressional resolution disapproving of the proposed constitution and requesting that the Fifth Constitutional Convention reconvene to consider changes to address these issues

6764-469: The relationship between CSA and CSD with a minimum catchment area established. Using the model for comparison in two basins in Tibet (Helongqu and Niyang River White Water), the results show that the critical support flow (Qc) of the housing dragon song is 0.0028 m /s. At the same time, the white water curvature is 0.0085 m /s. Besides, the critical support flow can vary with hydrologic climate conditions, and

6853-425: The side of the stream or within the floodplain will be a good indicator of persistent water regime. A perennial stream can be identified 48 hours after a storm. Direct storm runoff usually has ceased at this point. If a stream is still flowing and contributing inflow is not observed above the channel, the observed water is likely baseflow. Another perennial stream indication is an abundance of red rust material in

6942-580: The surrounding plantation land. A 1993 referendum on status attracted only 31.4% turnout, and so its results (in favor of the status quo) were considered void. No further status referendums have been scheduled since. The territory is classified by the United Nations as a non-self-governing territory . In 2016, the United Nations ' Special Committee on Decolonization recommended to the UN's General Assembly that this larger body should "actively pursue

7031-693: The three main islands of the U.S. Virgin Islands is counted as a county equivalent by the U.S. Census Bureau, with the following FIPS codes: 78010 for St. Croix, 78020 for St. John, and 78030 for St. Thomas. While a Danish possession, the islands were divided into "quarters" (five on St. John and nine on St. Croix), which were further divided into many dozens of "estates". Estate names are still used to write addresses; estates and quarters are used in describing real estate, especially on St. John and St. Croix. More densely populated towns such as Frederiksted and Christiansted on St. Croix were historically referred to as "districts", in contrast to

7120-430: The upper house of the Danish parliament in a tie vote (because the opposition carried a 97-year-old life member into the chamber). The onset of World War I brought the reform period to a close and again left the islands isolated. During the submarine warfare phases of the war, the United States, fearing that the islands might be seized by Germany as a submarine base, again approached Denmark about buying them. After

7209-655: The vital support flow Qc in wet areas (white water) is larger than in semi-arid regions (heap slot). The proposed critical support flow (CSD) concept and model method can be used to determine the hydrographic indicators of river sources in complex geographical areas, and it can also reflect the impact of hydrologic climate change on river recharge in different regions. The source of a river or stream (its point of origin) can consist of lakes, swamps, springs, or glaciers. A typical river has several tributaries; each of these may be made up of several other smaller tributaries, so that together this stream and all its tributaries are called

7298-512: The water flows off the land as runoff, the proportion of which varies according to many factors, such as wind, humidity, vegetation, rock types, and relief. This runoff starts as a thin film called sheet wash, combined with a network of tiny rills, together constituting sheet runoff; when this water is concentrated in a channel, a stream has its birth. Some creeks may start from ponds or lakes. The streams typically derive most of their water from rain and snow precipitation. Most of this water re-enters

7387-521: The year and is marked on topographic maps with a line of blue dashes and dots. A wash , desert wash, or arroyo is normally a dry streambed in the deserts of the American Southwest , which flows after sufficient rainfall. In Italy, an intermittent stream is termed a torrent ( Italian : torrente ). In full flood the stream may or may not be "torrential" in the dramatic sense of the word, but there will be one or more seasons in which

7476-402: The year. A stream of the first order is a stream which does not have any other recurring or perennial stream feeding into it. When two first-order streams come together, they form a second-order stream. When two second-order streams come together, they form a third-order stream. Streams of lower order joining a higher order stream do not change the order of the higher stream. The gradient of

7565-482: Was approved with nearly 72% voting in favor . Administratively, the U.S. Virgin Islands are divided into two districts : the St. Thomas and St. John district, and the St. Croix district. However, the U.S. Census Bureau divides each of the three main islands into three separate statistical entities (which are further divided into 20 subdistricts). Below is the U.S. Census Bureau's division model. Each of

7654-570: Was not as severe in those storms. In September 2017, Category 5 Hurricane Irma caused catastrophic damage, particularly to St. John and St. Thomas. Just two weeks later, Category 5 Hurricane Maria ravaged all three islands. Sustained winds at the Sandy Point National Wildlife Refuge on St. Croix reached 99 to 104 mph (159 to 167 km/h) and gusted to 137 mph (220 km/h). Even stronger winds likely occurred somewhere across

7743-508: Was replaced by the U.S. dollar in 1934, and from 1935 to 1939 the islands were a part of the United States customs area . The 1936 Organic Act and the 1954 Revised Organic Act established the local government. Tourism began to develop following World War II , over time becoming the most important sector of the islands' economy. The Virgin Islands National Park was established in 1956 on St. John , and by 1959, after

7832-470: Was signed into law by President Obama on June 30, 2010. Months later, a federal lawsuit was filed in the federal District Court of the Virgin Islands . The lawsuit claimed that the United States had to provide U.S. Virgin Islanders with the ability to be represented in Congress and vote for U.S. president. It alleged that racial discrimination present in the all-white and segregated U.S. Congress of 1917

7921-500: Was the impetus to deny the right to vote to a majority nonwhite constituency. The case was ultimately dismissed on August 16, 2012. The Fifth Constitutional Convention of the U.S. Virgin Islands met in October 2012 but was not able to produce a revised constitution before its October 31 deadline. On November 3, 2020, the Virgin Islands held a referendum on whether to convene a sixth constitutional convention. The proposal

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