{"id":287,"date":"2022-03-01T14:33:07","date_gmt":"2022-03-01T13:33:07","guid":{"rendered":"https:\/\/www.eovision.at\/esa-schoolatlas\/?page_id=287"},"modified":"2025-03-19T11:02:41","modified_gmt":"2025-03-19T10:02:41","slug":"las-vegas","status":"publish","type":"page","link":"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/anthroposphere\/las-vegas\/","title":{"rendered":"Las Vegas"},"content":{"rendered":"<h2>Quickly growing desert city with water issues<\/h2>\n<p><iframe src=\"https:\/\/esa-schoolatlas.eu\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/index.html\" width=\"100%\" height=\"670\"><\/iframe><\/p>\n<p>Las Vegas was founded in 1905, when the construction of a railway connection between Los Angeles and Salt Lake City crossed the area. The city is located in the Mojave Desert in Nevada, United States.<\/p>\n<p>While it remained a small village in the beginning, the development of Las Vegas gained speed with the construction of the nearby Hoover Dam, which started in 1931. This dam on the Colorado River supported the growth of the city, as it helped solve problems with the supply of water and energy in the desert <a class=\"glossaryLink\" title=\"Glossary: climate\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;climate&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Average weather conditions for a particular location over a long period of time, e.g. 30 years.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/climate\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">climate<\/a>. Annual rainfalls reach about 110 mm only.<\/p>\n<p>Additional support for the development of Las Vegas came from the growing tourism sector, which is based mostly on the increasingly important casinos and the vicinity of the famous national parks around the Grand Canyon.<\/p>\n<p>The consequence was a rapid population increase, the population almost quadrupled within the 40 years between 1980 and 2020:<\/p>\n<table style=\"background-color: #122540; text-align: center;\">\n<tbody>\n<tr>\n<td><strong>Year<\/strong><\/td>\n<td><strong>Population<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1950<\/td>\n<td>24,600<\/td>\n<\/tr>\n<tr>\n<td>1980<\/td>\n<td>164,700<\/td>\n<\/tr>\n<tr>\n<td>1990<\/td>\n<td>258,300<\/td>\n<\/tr>\n<tr>\n<td>2000<\/td>\n<td>478,400<\/td>\n<\/tr>\n<tr>\n<td>2010<\/td>\n<td>583,800<\/td>\n<\/tr>\n<tr>\n<td>2020<\/td>\n<td>641,900<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This population increase is reflected in the time series of <a class=\"glossaryLink\" title=\"Glossary: satellite\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;satellite&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A free-flying object orbiting the Earth, another planet, or the sun.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/satellite\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">satellite<\/a> images showing the growth of the area covered by Las Vegas.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" style=\"vertical-align: middle; margin: 0px 20px;\" src=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2022\/03\/Lake_Mead_at_Hoover_Dam_-_2-610x458.jpg\" alt=\"\" width=\"300\" height=\"225\" align=\"right\"\/><\/p>\n<p>However, this growth has led to problems. A massively increasing water use was due both to the growing number of people and to the increasing wealth of the inhabitants, which <a class=\"glossaryLink\"  title=\"Glossary: GOES\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;GOES&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Geostationary Operational Environmental Satellite - Observes the U.S. and adjacent ocean areas from vantage points 35,790 km above the equator at 75 degrees west and 135 degrees west. GOES satellites have an equatorial, Earth-synchronous orbit with a 24-hour period, a visible resolution of 1 km, and an IR resolution of 4 km.&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/goes\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>goes<\/a> hand in hand with large water consumption per capita.<\/p>\n<p>In combination with the growing water consumption, a series of years with little rainfall between 2015 and 2021 has led to a low water level of Lake Mead. This low water level threatens not only the water supply of Las Vegas, but also the energy production by the Hoover Dam, for which a minimum water flow is required.<\/p>\n<p>The water crisis has lead to countermeasures by the communal administration. One of the measures is that watering lawns is prohibited for certain periods of time, additionally water is more and more re-used by returning treated water to Lake Mead. As a consequene the per capita use of water has been reduced by 47% between 2002 and 2020.<\/p>\n<h3>Exercises<\/h3>\n<ul>\n<li><strong>Satellite Map:<\/strong>\n<ul>\n<li>Looking at the satellite image maps and move the slider to the left and to the right.<\/li>\n<li>Which differences can you identify between the satellite images from 1986 and 2020?<\/li>\n<li>Try to estimate the area of the city in 1990 and in 2020, respectively. By which factor has the area increased?<\/li>\n<li>How does this relate with the population increase during this time span (see table above)?<\/li>\n<li>Green areas in the satellite images are covered with vegetation. What types of vegetated areas do you expect in this environment (e.g. pastures, urban green, golf courses, crop fields, &#x2026;)?<\/li>\n<li>Take a look at Lake Mead in the east part of the satellite images. Is there a change of the water surface visible? What reasons could lead to this change?<\/li>\n<li>Think about the role of water for our society. What is it needed for? Where does the water for your home town come from?<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li><strong><a class=\"glossaryLink\" title=\"Glossary: Copernicus\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Copernicus&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Former name GMES (Global Monitoring for Environment and Security), the EU&#x2019;s Copernicus Earth observation programme, comprising in-situ elements (measurement tools) and the space segment (satellites).&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/copernicus\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Copernicus<\/a> Browser:<\/strong>\n<ul>\n<li>Open the <a href=\"https:\/\/link.dataspace.copernicus.eu\/7a30\" target=\"_blank\" rel=\"noopener\">Copernicus Browser<\/a>.<\/li>\n<li>Find the most recent <a class=\"glossaryLink\" title=\"Glossary: Sentinel\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Sentinel&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Series of six different Earth Observation satellite types under responsibility of ESA in the Copernicus programme.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/sentinel\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Sentinel<\/a>-2 dataset covering the area displayed in the satellite map<\/li>\n<li>Select a true colour representation<\/li>\n<li>Can you identify additional, recent changes in the area (focus e.g. on the city of Las Vegas and on the water surface of Lake Mead)?<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&#xA0;<\/p>\n<h3>Links and Sources<\/h3>\n<table style=\"background-color: #444444;\">\n<tbody>\n<tr>\n<td style=\"vertical-align: middle; padding-left: 10px;\"><strong>Downloads:<\/strong><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td align=\"center\"><img decoding=\"async\" class=\"wp-image-1439\" src=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4-150x150.png\" alt=\"\" width=\"25\" height=\"25\" srcset=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4-150x150.png 150w, https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4-152x150.png 152w, https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4-80x80.png 80w, https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4-300x300.png 300w, https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/uploads\/sites\/7\/2023\/11\/pdf-icon-4.png 320w\" sizes=\"(max-width: 25px) 100vw, 25px\"\/><\/td>\n<td>PDF document of the case study (includes exercises):<br>\n<a href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/ANT07_1_EN_LasVegas.pdf\" target=\"_blank\" rel=\"noopener\">English<\/a>, <a href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/ANT07_1_DE_LasVegas.pdf\" target=\"_blank\" rel=\"noopener\"> German<\/a>, <a href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/ANT07_1_FR_LasVegas.pdf\" target=\"_blank\" rel=\"noopener\"> French<\/a>, <a href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/ANT07_1_IT_LasVegas.pdf\" target=\"_blank\" rel=\"noopener\"> Italian<\/a>, <a href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/wp-content\/gismaps_maps\/ant07_1_lasvegas\/ANT07_1_ES_LasVegas.pdf\" target=\"_blank\" rel=\"noopener\"> Spanish<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"background-color: #444444;\">\n<tbody>\n<tr>\n<td style=\"vertical-align: middle; padding-left: 10px;\"><strong>Links:<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding-left: 10px;\">\n<ul>\n<li><a href=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2021\/11\/Las_Vegas_USA\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.<a class=\"glossaryLink\"  title=\"Glossary: ESA\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;ESA&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The European Space Agency&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/esa\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>esa<\/a>.int\/ESA_Multimedia\/Images\/2021\/11\/Las_Vegas_USA<\/a> &#x2013; data from the World Settlement Footprint Evolution project hightlighting the growth of Las Vegas<\/li>\n<li><a href=\"https:\/\/www.esa.int\/ESA_Multimedia\/Videos\/2015\/02\/Earth_from_Space_Desert_reservoir\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.esa.int\/ESA_Multimedia\/Videos\/2015\/02\/Earth_from_Space_Desert_reservoir<\/a> &#x2013; video showing the development of Las Vegas and Lake Mead<\/li>\n<li><a href=\"https:\/\/eol.jsc.nasa.gov\/Collections\/EarthFromSpace\/images.pl?photo=ISS026-E-6255\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/eol.jsc.<a class=\"glossaryLink\"  title=\"Glossary: NASA\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NASA&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Aeronautics and Space Administration - NASA, established in 1958 with Headquarters in Washington D.C., is the agency responsible for the public space program of the USA. Its mission is to plan, direct, and conduct aeronautical and space activities.&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/nasa\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>nasa<\/a>.gov\/Collections\/EarthFromSpace\/images.pl?photo=ISS026-E-6255<\/a> &ndash; Las Vegas at night (<a class=\"glossaryLink\"  title=\"Glossary: ISS\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;ISS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;International Space Station, a joint project between 16 countries designed as a scientific laboratory in space.&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/iss\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>ISS<\/a> astronaut photograph, 2010)<\/li>\n<li><a href=\"https:\/\/svs.gsfc.nasa.gov\/10721\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/svs.gsfc.nasa.gov\/10721<\/a> &#x2013; <a class=\"glossaryLink\" title=\"Glossary: false colour\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;false colour&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A colour imaging process which produces an image of a colour that does not correspond to the true or natural colour of the scene (as seen by our eyes). In Earth observation often used e.g. with infrared data (False colour Infrared, FIR).&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/glossary\/false-colour\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">false colour<\/a> infrared (NASA) time series from 1972 to 2021<\/li>\n<li><a href=\"https:\/\/www.reviewjournal.com\/opinion\/opinion-columns\/victor-joecks\/victor-joecks-las-vegas-water-situation-shows-why-theres-no-need-to-panic-over-global-warming-2450922\/\">https:\/\/www.reviewjournal.com\/opinion\/opinion-columns\/victor-joecks\/victor-joecks-las-vegas-water-situation-shows-why-theres-no-need-to-panic-over-global-warming-2450922\/<\/a>&#xA0;&#x2013; interesting view from Aug. 2021<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Quickly growing desert city with water issues Las Vegas was founded in 1905, when the construction of a railway connection between Los Angeles and Salt Lake City crossed the area. The city is located in the Mojave Desert in Nevada, United States. While it remained a small village in the beginning, the development of Las [&#x2026;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":101,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-287","page","type-page","status-publish","hentry"],"translation":{"provider":"WPGlobus","version":"3.0.0","language":"de","enabled_languages":["en","es","de","fr","it"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false}}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Las Vegas - ESA Schoolatlas<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/de\/anthroposphere\/las-vegas\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Las Vegas - 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