Trout is the common name for a number of species of freshwater fish belonging to the genera Oncorhynchus and Salvelinus, all of the subfamily Salmoninae of the family Salmonidae. The word trout is used as part of the name of some non-salmonid fish such as Cynoscion nebulosus, the spotted seatrout or speckled trout. Trout are related to salmon and char: species termed salmon and char occur in the same genera as do fish called trout. Lake trout and most other trout live in freshwater lakes and rivers while there are others, such as the steelhead, which can spend two or three years at sea before returning to fresh water to spawn. Steelhead that live out their lives in fresh water are called rainbow trout. Arctic char and brook trout are part of the char family. Trout are an important food source for humans and wildlife, including brown bears, birds of prey such as eagles, other animals, they are classified as oily fish. The name'trout' is used for some species in three of the seven genera in the subfamily Salmoninae: Salmo, Atlantic species.
Fish referred to as trout include: Genus Salmo Adriatic trout, Salmo obtusirostris Brown trout, Salmo trutta River trout, S. t. morpha fario Lake trout/Lacustrine trout, S. t. morpha lacustris Sea trout, S. t. morpha trutta Flathead trout, Salmo platycephalus Marble trout, Soca River trout or Soča trout – Salmo marmoratus Ohrid trout, Salmo letnica, S. balcanicus, S. lumi, S. aphelios Sevan trout, Salmo ischchan Genus Oncorhynchus Biwa trout, Oncorhynchus masou rhodurus Cutthroat trout, Oncorhynchus clarki Coastal cutthroat trout, O. c. clarki Crescenti trout, O. c. c. f. crescenti Alvord cutthroat trout O. c. alvordensis Bonneville cutthroat trout O. c. utah Humboldt cutthroat trout O. c. humboldtensis Lahontan cutthroat trout O. c. henshawi Whitehorse Basin cutthroat trout Paiute cutthroat trout O. c. seleniris Snake River fine-spotted cutthroat trout, O. c. behnkei Westslope cutthroat trout O. c. lewisi Yellowfin cutthroat trout O. c. macdonaldi Yellowstone cutthroat trout O. c. bouvieri Colorado River cutthroat trout O. c. pleuriticus Greenback cutthroat trout O. c. stomias Rio Grande cutthroat trout O. c. virginalis Oncorhynchus gilae Gila trout, O. g. gilae Apache trout, O. g. apache Rainbow trout, Oncorhynchus mykiss Kamchatkan rainbow trout, Oncorhynchus mykiss mykiss Columbia River redband trout, Oncorhynchus mykiss gairdneri Coastal rainbow trout, Oncorhynchus mykiss irideus Beardslee trout, Oncorhynchus mykiss irideus var. beardsleei Great Basin redband trout, Oncorhynchus mykiss newberrii Golden trout, Oncorhynchus mykiss aguabonita Kern River rainbow trout, Oncorhynchus mykiss aguabonita var. gilberti Sacramento golden trout, Oncorhynchus mykiss aguabonita var. stonei Little Kern golden trout, Oncorhynchus mykiss aguabonita var. whitei Kamloops rainbow trout, Oncorhynchus mykiss kamloops Baja California rainbow trout, Nelson's trout, or San Pedro Martir trout, Oncorhynchus mykiss nelsoni Eagle Lake trout, Oncorhynchus mykiss aquilarum McCloud River redband trout, Oncorhynchus mykiss stonei Sheepheaven Creek redband trout Mexican golden trout, Oncorhynchus chrysogaster Genus Salvelinus Brook trout, Salvelinus fontinalis Aurora trout, S. f. timagamiensis Bull trout, Salvelinus confluentus Dolly Varden trout, Salvelinus malma Lake trout, Salvelinus namaycush Silver trout, † Salvelinus agassizi Hybrids Tiger trout, Salmo trutta X Salvelinus fontinalis Speckled Lake trout, Salvelinus namaycush X Salvelinus fontinalis Trout that live in different environments can have different colorations and patterns.
These colors and patterns form as camouflage, based on the surroundings, will change as the fish moves to different habitats. Trout in, or newly returned from the sea, can look silvery, while the same fish living in a small stream or in an alpine lake could have pronounced markings and more vivid coloration. In general trout that are about to breed have intense coloration, they can look like an different fish outside of spawning season. It is impossible to define a particular color pattern as belonging to a specific breed. Trout have fins without spines, all of them have a small adipose fin along the back, near the tail; the pelvic fins sit well back on each side of the anus. The swim bladder is connected to the esophagus, allowing for gulping or rapid expulsion of air, a condition known as physostome. Unlike many other physostome fish, trout do not use their bladder as an auxiliary device for oxygen uptake, relying on their gills. There are many species, more populations, that are isolated from each other and morphologically different.
However, since many of these distinct populations show no significant genetic differences, what may appear to be a large number of species is considered a much smaller number of distinct species by most ichthyologists. The trout found in the eastern United States are a good example of this; the brook trout, the aurora trout, the silver trout all have physical characteristics and colorations that distinguish them, yet genetic analysis shows that they are one species, Salvelinus fontinalis. Lake trout, like brook trout, belong to the char genus. Lake trout inhabit many of the larger lakes in North America, live m
Confluence Park is an urban park encompassing the confluence of Cherry Creek and the South Platte River in Denver's Lower Downtown, a bustling district of 19th-century brick warehouses and storefronts, redeveloped since the late 1980s. The park includes concrete trails filled with walkers and bikers; some grassy areas, river overlooks, park benches are available. Two pedestrian bridges cross the South Platte Cherry Creek at Confluence Park; the eastern edge of the South Platte in Confluence Park has been transformed into a kayak run across from R. E. I.'s Colorado flagship store. The park is adjacent to a number of new up-scale townhouses and loft developments, another park bordering the South Platte downstream, train tracks, Denver's skatepark; the Platte Valley Trolley originates in Confluence Park, running along the west side of the South Platte River from Memorial Day weekend through Labor Day weekend, for all Denver Broncos home games. Confluence Park marks the area where William Greeneberry Russell's party began its local search for gold in May 1858.
They found no gold at the confluence, but they turned up "good diggings" at the mouth of Little Dry Creek, about four miles south. The discovery was an immediate cause of the Colorado Gold Rush, the encampment would become Denver. Part of the site hosted an Xcel Energy substation, relocated to allow for the expansion of the park. Olvera Street original location of Los Angeles, California. Confluence Park Denver - Lovely Denver Denver Parks Only in Colorado
National Register of Historic Places
The National Register of Historic Places is the United States federal government's official list of districts, buildings and objects deemed worthy of preservation for their historical significance. A property listed in the National Register, or located within a National Register Historic District, may qualify for tax incentives derived from the total value of expenses incurred preserving the property; the passage of the National Historic Preservation Act in 1966 established the National Register and the process for adding properties to it. Of the more than one million properties on the National Register, 80,000 are listed individually; the remainder are contributing resources within historic districts. For most of its history the National Register has been administered by the National Park Service, an agency within the United States Department of the Interior, its goals are to help property owners and interest groups, such as the National Trust for Historic Preservation, coordinate and protect historic sites in the United States.
While National Register listings are symbolic, their recognition of significance provides some financial incentive to owners of listed properties. Protection of the property is not guaranteed. During the nomination process, the property is evaluated in terms of the four criteria for inclusion on the National Register of Historic Places; the application of those criteria has been the subject of criticism by academics of history and preservation, as well as the public and politicians. Historic sites outside the country proper, but associated with the United States are listed. Properties can be nominated in a variety of forms, including individual properties, historic districts, multiple property submissions; the Register categorizes general listings into one of five types of properties: district, structure, building, or object. National Register Historic Districts are defined geographical areas consisting of contributing and non-contributing properties; some properties are added automatically to the National Register when they become administered by the National Park Service.
These include National Historic Landmarks, National Historic Sites, National Historical Parks, National Military Parks, National Memorials, some National Monuments. On October 15, 1966, the Historic Preservation Act created the National Register of Historic Places and the corresponding State Historic Preservation Offices; the National Register consisted of the National Historic Landmarks designated before the Register's creation, as well as any other historic sites in the National Park system. Approval of the act, amended in 1980 and 1992, represented the first time the United States had a broad-based historic preservation policy; the 1966 act required those agencies to work in conjunction with the SHPO and an independent federal agency, the Advisory Council on Historic Preservation, to confront adverse effects of federal activities on historic preservation. To administer the newly created National Register of Historic Places, the National Park Service of the U. S. Department of the Interior, with director George B.
Hartzog Jr. established an administrative division named the Office of Archeology and Historic Preservation. Hartzog charged OAHP with creating the National Register program mandated by the 1966 law. Ernest Connally was the Office's first director. Within OAHP new divisions were created to deal with the National Register; the division administered several existing programs, including the Historic Sites Survey and the Historic American Buildings Survey, as well as the new National Register and Historic Preservation Fund. The first official Keeper of the Register was an architectural historian. During the Register's earliest years in the late 1960s and early 1970s, organization was lax and SHPOs were small and underfunded. However, funds were still being supplied for the Historic Preservation Fund to provide matching grants-in-aid to listed property owners, first for house museums and institutional buildings, but for commercial structures as well. A few years in 1979, the NPS history programs affiliated with both the U.
S. National Parks system and the National Register were categorized formally into two "Assistant Directorates." Established were the Assistant Directorate for Archeology and Historic Preservation and the Assistant Directorate for Park Historic Preservation. From 1978 until 1981, the main agency for the National Register was the Heritage Conservation and Recreation Service of the United States Department of the Interior. In February 1983, the two assistant directorates were merged to promote efficiency and recognize the interdependency of their programs. Jerry L. Rogers was selected to direct this newly merged associate directorate, he was described as a skilled administrator, sensitive to the need for the NPS to work with SHPOs, local governments. Although not described in detail in the 1966 act, SHPOs became integral to the process of listing properties on the National Register; the 1980 amendments of the 1966 law further defined the responsibilities of SHPOs concerning the National Register.
Several 1992 amendments of the NHPA added a category to the National Register, known as Traditional Cultural Properties: those properties associated with Native American or Hawaiian groups
El Paso County, Colorado
El Paso County is one of the 64 counties of the U. S. state of Colorado. The 2017 census estimate recorded an approximate population of 699,232 for El Paso County; the Census Bureau's 2017 estimate indicates it is the second-most populous county in Colorado, after the City and County of Denver. The county seat is the second most populous city in Colorado. El Paso County is included in the Colorado Springs, Metropolitan Statistical Area. El Paso County is located in Colorado's 5th congressional district. Since its creation in 1871, El Paso County has voted for the Republican presidential candidate in presidential elections; the Democratic Party won El Paso County four additional times prior, the Populist Party won in 1892, with General James B. Weaver. In 2004, the voters of Colorado Springs and El Paso County established the Pikes Peak Rural Transportation Authority and adopted a 1% sales tax dedicated to improving the region's transportation infrastructure. Together with state funding for COSMIX and the I-25 interchange with Highway 16, significant progress has been made since 2003 in addressing the transportation needs of the area.
In 2010 and 2014, the county voted to legalize marijuana. In July 1858, gold was discovered along the South Platte River in Kansas Territory; this discovery precipitated the Pike's Peak Gold Rush. Many residents of the mining region felt disconnected from the remote territorial governments of Kansas and Nebraska, so they voted to form their own Territory of Jefferson on October 24, 1859; the following month, the Jefferson Territorial Legislature organized 12 counties for the new territory including El Paso County. El Paso County was named for the Spanish language name for Ute Pass north of Pikes Peak. Colorado City served as the county seat of El Paso County; the Jefferson Territory never received federal sanction, but on February 28, 1861, U. S. President James Buchanan signed an act organizing the Territory of Colorado. El Paso County was one of the original 17 counties created by the Colorado legislature on November 1, 1861. Part of its western territory was broken off to create Teller County in 1899.
Based in Old Colorado City, El Paso County's county seat was moved to Colorado Springs in 1873. According to the U. S. Census Bureau, the county has a total area of 2,130 square miles, of which 2,127 square miles are land and 2.7 square miles are covered by water. Douglas County - north Elbert County - northeast Lincoln County - east Crowley County - southeast Pueblo County - south Fremont County - west Teller County - west Interstate 25 U. S. Highway 24 U. S. Highway 85 State Highway 83 State Highway 94 State Highway 115 Pike National Forest Cheyenne Mountain State Park Pikes Peak National Historic Landmark USAFA Cadet Area National Historic District Old Colorado City Manitou Springs As of the census of 2000, 516,929 people, 192,409 households, 133,916 families resided in the county; the population density was 243 people per square mile. The 202,428 housing units at averaged 95 per square mile; the racial makeup of the county was 81.19% White, 6.51% Black or African American, 0.91% Native American, 2.53% Asian, 0.24% Pacific Islander, 4.70% from other races, 3.91% from two or more races.
About 11.30 % of the population was Latino of any race. Of the 192,409 households, 36.70% had children under the age of 18 living with them, 55.60% were married couples living together, 10.20% had a female householder with no husband present, 30.40% were not families. Around 23.90% of all households were made up of individuals and 6.10% had someone living alone, 65 years of age or older. The average household size was 2.61 and the average family size was 3.11. In the county, the population was distributed as 27.60% under the age of 18, 10.50% from 18 to 24, 32.50% from 25 to 44, 20.70% from 45 to 64, 8.70% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 100.90 males. For every 100 females age 18 and over, there were 98.80 males. Colorado Springs Fountain Manitou Springs Calhan Green Mountain Falls Monument Palmer Lake Ramah Alta Vista Crystola Eastonville Falcon La Foret Rush Truckton Yoder El Paso County is governed by a board of county commissioners.
Its current members are Darryl Glenn in district 1, Mark Waller in district 2, Stan VanderWerf in district 3, Longinos Gonzales Jr in district 4, Peggy Littleton in district 5. The Colorado Department of Corrections has its headquarters in an unincorporated area in the county. According to the city's 2014 Comprehensive Annual Financial Report, the top employers in the city are: El Paso is a Republican county and the most populous reliably Republican county in Colorado, it has voted Republican in every presidential election since 1920 except for the Democratic landslides of 1936 and 1964. El Paso County is home to both Air Force bases; these military installations border the city, to the north and east, aside from Schriever Air Force Base, located about 10 miles east of Peterson AFB. Fort Carson, "The Mountain Post", is located just south of Colorado Springs at the base of the Rocky Mountains, it was established following Japan's attack on Pearl Harbor. The city of Colorado Springs donated it to the War Department.
Construction began and the first building, the camp headquarters, was completed January 31, 1942. Camp Carson was nam
Denver the City and County of Denver, is the capital and most populous municipality of the U. S. state of Colorado. Denver is located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains; the Denver downtown district is east of the confluence of Cherry Creek with the South Platte River 12 mi east of the foothills of the Rocky Mountains. Denver is named after James W. Denver, a governor of the Kansas Territory, it is nicknamed the Mile High City because its official elevation is one mile above sea level; the 105th meridian west of Greenwich, the longitudinal reference for the Mountain Time Zone, passes directly through Denver Union Station. Denver is ranked as a Beta world city by World Cities Research Network. With an estimated population of 704,621 in 2017, Denver is the 19th-most populous U. S. city, with a 17.41% increase since the 2010 United States Census, it has been one of the fastest-growing major cities in the United States.
The 10-county Denver-Aurora-Lakewood, CO Metropolitan Statistical Area had an estimated 2017 population of 2,888,227 and is the 19th most populous U. S. metropolitan statistical area. The 12-city Denver-Aurora, CO Combined Statistical Area had an estimated 2017 population of 3,515,374 and is the 15th most populous U. S. metropolitan area. Denver is the most populous city of the 18-county Front Range Urban Corridor, an oblong urban region stretching across two states with an estimated 2017 population of 4,895,589. Denver is the most populous city within a 500-mile radius and the second-most populous city in the Mountain West after Phoenix, Arizona. In 2016, Denver was named the best place to live in the United States by U. S. News & World Report. In the summer of 1858, during the Pike's Peak Gold Rush, a group of gold prospectors from Lawrence, Kansas established Montana City as a mining town on the banks of the South Platte River in what was western Kansas Territory; this was the first historical settlement in what was to become the city of Denver.
The site faded however, by the summer of 1859 it was abandoned in favor of Auraria and St. Charles City. On November 22, 1858, General William Larimer and Captain Jonathan Cox, both land speculators from eastern Kansas Territory, placed cottonwood logs to stake a claim on the bluff overlooking the confluence of the South Platte River and Cherry Creek, across the creek from the existing mining settlement of Auraria, on the site of the existing townsite of St. Charles. Larimer named the townsite Denver City to curry favor with Kansas Territorial Governor James W. Denver. Larimer hoped the town's name would help make it the county seat of Arapaho County but, unbeknownst to him, Governor Denver had resigned from office; the location was accessible to existing trails and was across the South Platte River from the site of seasonal encampments of the Cheyenne and Arapaho. The site of these first towns is now the site of Confluence Park near downtown Denver. Larimer, along with associates in the St. Charles City Land Company, sold parcels in the town to merchants and miners, with the intention of creating a major city that would cater to new immigrants.
Denver City was a frontier town, with an economy based on servicing local miners with gambling, saloons and goods trading. In the early years, land parcels were traded for grubstakes or gambled away by miners in Auraria. In May 1859, Denver City residents donated 53 lots to the Leavenworth & Pike's Peak Express in order to secure the region's first overland wagon route. Offering daily service for "passengers, mail and gold", the Express reached Denver on a trail that trimmed westward travel time from twelve days to six. In 1863, Western Union furthered Denver's dominance of the region by choosing the city for its regional terminus; the Colorado Territory was created on February 28, 1861, Arapahoe County was formed on November 1, 1861, Denver City was incorporated on November 7, 1861. Denver City served as the Arapahoe County Seat from 1861 until consolidation in 1902. In 1867, Denver City became the acting territorial capital, in 1881 was chosen as the permanent state capital in a statewide ballot.
With its newfound importance, Denver City shortened its name to Denver. On August 1, 1876, Colorado was admitted to the Union. Although by the close of the 1860s, Denver residents could look with pride at their success establishing a vibrant supply and service center, the decision to route the nation's first transcontinental railroad through Cheyenne, rather than Denver, threatened the prosperity of the young town. A daunting 100 miles away, citizens mobilized to build a railroad to connect Denver to the transcontinental railroad. Spearheaded by visionary leaders including Territorial Governor John Evans, David Moffat, Walter Cheesman, fundraising began. Within three days, $300,000 had been raised, citizens were optimistic. Fundraising stalled before enough was raised, forcing these visionary leaders to take control of the debt-ridden railroad. Despite challenges, on June 24, 1870, citizens cheered as the Denver Pacific completed the link to the transcontinental railroad, ushering in a new age of prosperity for Denver.
Linked to the rest of the nation by rail, Denver prospered as a service and supply center. The young city grew during these years, attracting millionaires with their mansions, as well as the poverty and crime of a growing city. Denver citizens were proud when the rich chose Denver and were thrilled when Horace Tabor, the Leadville mining millionaire, built an impressive business block at 16th and Larimer as well as the el
Irrigation is the application of controlled amounts of water to plants at needed intervals. Irrigation helps to grow agricultural crops, maintain landscapes, revegetate disturbed soils in dry areas and during periods of less than average rainfall. Irrigation has other uses in crop production, including frost protection, suppressing weed growth in grain fields and preventing soil consolidation. In contrast, agriculture that relies only on direct rainfall is referred to as rain-fed or dry land farming. Irrigation systems are used for cooling livestock, dust suppression, disposal of sewage, in mining. Irrigation is studied together with drainage, the removal of surface and sub-surface water from a given area. Irrigation has been a central feature of agriculture for over 5,000 years and is the product of many cultures, it was the basis for economies and societies across the globe, from Asia to the Southwestern United States. Archaeological investigation has found evidence of irrigation in areas lacking sufficient natural rainfall to support crops for rainfed agriculture.
The earliest known use of the technology dates to the 6th millennium BCE in Khuzistan in the south-west of present-day Iran. Irrigation was used as a means of manipulation of water in the alluvial plains of the Indus valley civilization, the application of it is estimated to have begun around 4500 BC and drastically increased the size and prosperity of their agricultural settlements; the Indus Valley Civilization developed sophisticated irrigation and water-storage systems, including artificial reservoirs at Girnar dated to 3000 BCE, an early canal irrigation system from c. 2600 BCE. Large-scale agriculture was practiced, with an extensive network of canals used for the purpose of irrigation. Farmers in the Mesopotamian plain used irrigation from at least the third millennium BCE, they developed perennial irrigation watering crops throughout the growing season by coaxing water through a matrix of small channels formed in the field. Ancient Egyptians practiced basin irrigation using the flooding of the Nile to inundate land plots, surrounded by dykes.
The flood water remained until the fertile sediment had settled before the engineers returned the surplus to the watercourse. There is evidence of the ancient Egyptian pharaoh Amenemhet III in the twelfth dynasty using the natural lake of the Faiyum Oasis as a reservoir to store surpluses of water for use during dry seasons; the lake swelled annually from the flooding of the Nile. The Ancient Nubians developed a form of irrigation by using a waterwheel-like device called a sakia. Irrigation began in Nubia some time between the third and second millennia BCE, it depended upon the flood waters that would flow through the Nile River and other rivers in what is now the Sudan. In sub-Saharan Africa irrigation reached the Niger River region cultures and civilizations by the first or second millennium BCE and was based on wet-season flooding and water harvesting. Evidence of terrace irrigation occurs in pre-Columbian America, early Syria and China. In the Zana Valley of the Andes Mountains in Peru, archaeologists have found remains of three irrigation canals radiocarbon-dated from the 4th millennium BCE, the 3rd millennium BCE and the 9th century CE.
These canals provide the earliest record of irrigation in the New World. Traces of a canal dating from the 5th millennium BCE were found under the 4th-millennium canal. Ancient Persia used irrigation as far back as the 6th millennium BCE to grow barley in areas with insufficient natural rainfall; the Qanats, developed in ancient Persia about 800 BCE, are among the oldest known irrigation methods still in use today. They are now found in the Middle East and North Africa; the system comprises a network of vertical wells and sloping tunnels driven into the sides of cliffs and of steep hills to tap groundwater. The noria, a water wheel with clay pots around the rim powered by the flow of the stream, first came into use at about this time among Roman settlers in North Africa. By 150 BCE the pots were fitted with valves to allow smoother filling as they were forced into the water; the irrigation works of ancient Sri Lanka, the earliest dating from about 300 BCE in the reign of King Pandukabhaya, under continuous development for the next thousand years, were one of the most complex irrigation systems of the ancient world.
In addition to underground canals, the Sinhalese were the first to build artificial reservoirs to store water. These reservoirs and canal systems were used to irrigate paddy fields, which require a lot of water to cultivate. Most of these irrigation systems still exist undamaged up to now, in Anuradhapura and Polonnaruwa, because of the advanced and precise engineering; the system was further extended during the reign of King Parakrama Bahu. The oldest known hydraulic engineers of China were Sunshu Ao of the Spring and Autumn period and Ximen Bao of the Warring States period, both of whom worked on large irrigation projects. In the Sichuan region belonging to the state of Qin of ancient China, the Dujiangyan Irrigation System devised by the Qin Chinese hydrologist and irrigation engineer Li Bing was built in 256 BCE to irrigate a vast area of farmland that today still supplies water. By the 2nd century AD, during the Han Dynasty, the Chinese used chain pumps which lifted water from a lower elevation to a higher one.
These were powered by manual foot-pedal, hydraulic waterwheels, or rotating mechanical wheels pulled by oxen. The water was used for public works, providing water for urban residential quarters and palace gardens, bu