View source for Lake Titicaca

{{Short description|Large freshwater lake on the border of Peru and Bolivia}}
{{About||the archaeological site in the Cusco Region, Peru|Titiqaqa (Cusco){{!}}Titiqaqa (Cusco)}}
{{infobox body of water
| name               = Lake Titicaca
| image              = Lake Titicaca ESA22522896.jpeg
| caption            = [[Sentinel-2]] satellite image of Lake Titicaca from 2021
| image_bathymetry   = Lake Titicaca map.png
| caption_bathymetry = Map of Lake Titicaca
| location           = 
| coords             = {{Coord|15|49|30|S|69|19|30|W|type:waterbody_scale:2000000|display=inline,title}}
| type               = [[Ancient lake]]
| inflow             = 27 rivers
| outflow            = [[Desaguadero River (Bolivia)|Desaguadero River]]
| catchment          = {{cvt|58000|km2|sqmi|-2}}<ref name="ilec" />
| basin_countries    = [[Bolivia]] and [[Peru]]
| length             = {{cvt|190|km|mi|0}}
| width              = {{cvt|80|km|mi|0}}
| area               = {{cvt|8372|km2|sqmi|0}}<ref name="ilec" />
| depth              = {{cvt|107|m|ft|0}}<ref name="ilec" />
| max-depth          = {{cvt|281|m|ft|0}}<ref name="ilec" />
| volume             = {{cvt|896|km3|cumi|0}}<ref name="ilec" />
| residence_time     = 1,343 years<ref name="ilec" />
| shore              = {{cvt|1125|km|mi|0}}<ref name="ilec" />
| elevation          = {{cvt|3812|m|ft|0}}<ref name="ilec" />
| frozen             = never<ref name="ilec" />
| islands            = 42+ (see ''[[#Islands|article]]'')
| cities             = [[Copacabana, Bolivia]]<br />[[Puno, Peru]]
| reference          = <ref name="ilec" />
| sections           = [[Wiñaymarka]]
| pushpin_label      = 
| pushpin_map_caption = 
| pushpin_map        = Bolivia#Peru#South America
| pushpin_map_alt    = Location of Lake Titicaca
| pushpin_relief     = y
| pushpin_label_position = bottom
| mapframe = yes
| mapframe-zoom = 7
| embedded = {{Designation list
| embed                = yes
| designation1         = Ramsar
| designation1_offname = Lago Titicaca
| designation1_date    = 20 January 1997
| designation1_number  = 881<ref>{{Cite web |title=Lago Titicaca |website=[[Ramsar Convention|Ramsar]] Sites Information Service |url=https://rsis.ramsar.org/ris/881 |access-date=25 April 2018 |archive-date=13 November 2020 |archive-url=https://web.archive.org/web/20201113165151/https://rsis.ramsar.org/ris/881 |url-status=live }}</ref>
| designation2         = Ramsar
| designation2_offname = Lago Titicaca
| designation2_date    = 11 September 1998
| designation2_number  = 959<ref>{{Cite web |title=Lago Titicaca |website=[[Ramsar Convention|Ramsar]] Sites Information Service |url=https://rsis.ramsar.org/ris/959 |access-date=25 April 2018 |archive-date=13 November 2020 |archive-url=https://web.archive.org/web/20201113165127/https://rsis.ramsar.org/ris/959 |url-status=live }}</ref>}}
}}

'''Lake Titicaca''' ({{IPAc-en|t|ɪ|t|ɪ|ˈ|k|ɑː|k|ə}};<ref>{{dictionary.com|Titicaca |access-date=10 January 2020}}</ref> {{langx|es|Lago Titicaca}} {{IPA|es|ˈlaɣo titiˈkaka|}}; {{Langx|qu|Titiqaqa}} and {{langx|ay|Titiqaqa}}) is a large [[freshwater]] lake in the [[Andes]] mountains on the border of [[Bolivia]] and [[Peru]]. It is often called the highest [[navigable]] lake in the world. Titicaca is the largest lake in South America, both in terms of the volume of water and surface area.<ref name=strontium>Grove, M. J., P. A. Baker, S. L. Cross, C. A. Rigsby and G. O. Seltzer 2003 Application of Strontium Isotopes to Understanding the Hydrology and Paleohydrology of the Altiplano, Bolivia-Peru. ''Palaeogeography, Palaeoclimatology, Palaeoecology'' 194:281-297.</ref><ref>Rigsby, C., P. A. Baker and M. S. Aldenderfer 2003 Fluvial History of the [[Rio Ilave]] Valley, Peru, and Its Relationship to Climate and Human History. ''Palaeogeography, Palaeoclimatology, Palaeoecology'' 194:165-185</ref><ref>{{cite web |url=http://www.qunlimited.com/conflict.htm |title=Who Wants to Be a Judge at the National Academic Championship? |work=National Academic Championship |date=2003 |access-date=6 December 2016 |author=Questions Unlimited |archive-date=6 April 2017 |archive-url=https://web.archive.org/web/20170406182417/http://www.qunlimited.com/conflict.htm |url-status=live }}</ref>{{efn|[[Lake Maracaibo]] has a larger surface area, but it is a tidal [[bay]], not a lake.}} It is the [[List of lakes by area|18th largest]] lake in the world.<ref>{{Cite web |last=Alex |date=2019-02-24 |title=The largest Lakes in the World by Area |url=https://vividmaps.com/largest-lakes-by-area/ |access-date=2025-10-18 |website=Vivid Maps |language=en-US}}</ref>  It has a surface elevation of {{cvt|3,812|m}}.<ref>{{cite web |url=https://www.cia.gov/the-world-factbook/countries/peru/ |title=The World Factbook |work=cia.gov |access-date=27 April 2015 |archive-date=23 January 2021 |archive-url=https://web.archive.org/web/20210123014649/https://www.cia.gov/the-world-factbook/countries/peru/ |url-status=live }}</ref><ref>{{cite web |url=http://geography.about.com/od/lists/a/Ten-Highest-Lakes-In-The-World.htm |title=Highest Lake Elevations in the World |work=About.com Education |access-date=27 April 2015 |archive-date=4 August 2016 |archive-url=https://web.archive.org/web/20160804061903/http://geography.about.com/od/lists/a/Ten-Highest-Lakes-In-The-World.htm |url-status=live }}</ref>

==Overview==
[[File:Copacabana, Bolivia at sunset.jpg|left|thumb|A view of Lake Titicaca taken from the town of [[Copacabana, Bolivia|Copacabana]] in Bolivia]]
The lake is located at the northern end of the [[endorheic]] [[Altiplano]] basin high in the [[Andes]] on the border of Peru and Bolivia. The western part of the lake lies within the [[Puno Region]] of Peru, and the eastern side is located in the Bolivian [[La Paz Department (Bolivia)|La Paz Department]].

The lake consists of two nearly separate subbasins connected by the [[Strait of Tiquina]], which is {{cvt|800|m|ft|-1}} across at the narrowest point. The larger subbasin, ''Lago Grande'' (also called ''Lago Chucuito''), has a mean depth of {{cvt|135|m|ft|0}} and a maximum depth of {{cvt|284|m|ft|0}}. The smaller subbasin, [[Wiñaymarka]] (also called ''Lago Pequeño'', "little lake"), has an average depth of {{cvt|9|m|ft|0}} and a maximum depth of {{cvt|40|m|ft|0}}.<ref name="Dejoux">Dejoux, C. and A. Iltis (editors) (1992). ''Lake Titicaca: A Synthesis of Limnological Knowledge''. 68. Kluwer Academic Publishers, Boston.</ref> The overall average depth of the lake is {{cvt|107|m|ft|0}}.<ref name="ilec">{{cite web |url=http://www.ilec.or.jp/database/sam/dsam04.html |title=Data Summary: Lago Titicaca (Lake Titicaca) |publisher=International Lake Environment Committee Foundation – ILEC |access-date=2009-01-03 |url-status=dead |archive-url=https://web.archive.org/web/20110723165816/http://www.ilec.or.jp/database/sam/dsam04.html |archive-date=2011-07-23}}</ref>

Five major river systems feed into Lake Titicaca.<ref>Roche, M. A., J. Bourges, J. Cortes and R. Mattos (1992). Climatology and Hydrology of the Lake Titicaca Basin. In ''Lake Titicaca: A Synthesis of Limnological Knowledge'', edited by C. Dejoux and A. Iltis, pp. 63–88. Monographiae Biologicae. vol. 68, H. J. Dumont and M. J. A. Werger, general editor. Kluwer Academic Publishers, Boston.</ref> In order of their relative flow volumes, these are Ramis, Coata, Ilave, Huancané, and Suchez.<ref name=strontium/> More than 20 other smaller streams empty into Titicaca. The lake has 41 islands, some of which are densely populated.

Having only a single season of free circulation, the lake is [[monomictic]],<ref name=cross>Cross, S. L., P. A. Baker, G. O. Seltzer, S. C. Fritz and R. B. Dunbar (2001). Late Quaternary Climate and Hydrology of Tropical South America Inferred from an Isotopic and Chemical Model of Lake Titicaca, Bolivia and Peru. ''Quaternary Research'' 56(1):1–9.</ref><ref>Mourguiart, P., T. Corrége, D. Wirrmann, J. Argollo, M. E. Montenegro, M. Pourchet and P. Carbonel (1998). Holocene Palaeohydrology of Lake Titicaca Estimated from an Ostracod-Based Transfer Function. ''Palaeogeography, Palaeoclimatology, Palaeoecology'' 143:51–72.</ref> and water passes through Lago Huiñaimarca and flows out the single outlet at the [[Desaguadero River (Bolivia and Peru)|Río Desaguadero]],<ref>Baucom, P. C. and C. A. Rigsby 1999 Climate and Lake Level History of the Northern Altiplano, Bolivia, as Recorded in Holocene Sediments of the Río Desaguadero. ''Journal of Sedimentary Research'' 69(3):597–611.</ref> which then flows south through Bolivia to [[Lake Poopó]]. This only accounts for about 10% of the lake's [[water balance]]. [[Evapotranspiration]], caused by strong winds and intense sunlight at high altitude, balances the remaining 90% of the water loss. It is nearly a closed lake.<ref name=strontium/><ref name="Dejoux" /><ref>Talbi, A., A. Coudrain, P. Ribstein and B. Pouyaud (1999). Computation of the Rainfall of Lake Titicaca Catchment During the Holocene. ''Géosciences de Surface'' 329:197–203.</ref>
[[File:Vista de Puno y el Titicaca, Perú, 2015-08-01, DD 63.JPG|left|thumb|The city of [[Puno]] in Peru, the largest urban settlement on the lake]]
Since 2000, Lake Titicaca has experienced constantly receding water levels. Between April and November 2009 alone, the water level dropped by {{cvt|81|cm|in|0}}, reaching the lowest level since 1949. This drop is caused by shortened rainy seasons and the melting of glaciers feeding the tributaries of the lake.<ref>Carlos Valdez: [http://news.smh.com.au/breaking-news-world/lake-titicaca-at-dangerously-low-level-20091113-idgf.html ''Lake Titicaca at dangerously low level''] {{Webarchive |url=https://web.archive.org/web/20150205215942/http://news.smh.com.au/breaking-news-world/lake-titicaca-at-dangerously-low-level-20091113-idgf.html |date=2015-02-05 }} – website of the Sydney Morning Herald (accessed 2009-11-28)</ref><ref>[https://www.youtube.com/watch?v=KCLNKU5N3mY ''Lake Titicaca evaporating away (video)''] {{Webarchive |url=https://web.archive.org/web/20220128120434/https://www.youtube.com/watch?v=KCLNKU5N3mY |date=2022-01-28 }} – report by [[Al Jazeera Arabic|al Jazeera]] (accessed 2009-11-28)</ref> [[Water pollution in Peru|Water pollution]] is also an increasing concern because cities in the Titicaca [[Drainage basin|watershed]] grow, sometimes outpacing solid waste and sewage treatment infrastructure.<ref>{{cite news |last=Shahriari |first=Sara |title=Pollution threatens South America's Lake Titicaca |url=https://www.csmonitor.com/World/Americas/2012/0330/Pollution-threatens-South-America-s-Lake-Titicaca |access-date=26 May 2012 |newspaper=The Christian Science Monitor |date=30 March 2012 |archive-date=12 November 2020 |archive-url=https://web.archive.org/web/20201112024616/https://www.csmonitor.com/World/Americas/2012/0330/Pollution-threatens-South-America-s-Lake-Titicaca |url-status=live }}</ref> According to the [[Global Nature Fund]] (GNF), Titicaca's biodiversity is threatened by water pollution and the [[introduced species|introduction]] of new species by humans.<ref>{{cite web |url=http://www.globalnature.org/35193/Living-Lakes/America/Lake-Titicaca/resindex.aspx |title=GNF – Lake Titicaca |first=Almut |last=Weis |website=www.globalnature.org |access-date=2015-05-19 |archive-date=2020-11-27 |archive-url=https://web.archive.org/web/20201127164848/https://www.globalnature.org/35193/Living-Lakes/America/Lake-Titicaca/resindex.aspx |url-status=live }}</ref> A 2011 United Nations report found alarming concentrations of cadmium, arsenic, and lead in various parts of the lake.<ref>{{Cite web |title=The Devastating Pollution of Lake Titicaca in Peru: Causes and Consequences |url=https://www.ecohubmap.com/hot-spot/pollution-of-lake-titicaca-peru/3wt1klfu2hodv |access-date=2023-12-18 |website=www.ecohubmap.com}}</ref><ref>{{Cite journal |last1=Monroy |first1=Mario |last2=Maceda-Veiga |first2=Alberto |last3=de Sostoa |first3=Adolfo |date=2014-07-15 |title=Metal concentration in water, sediment and four fish species from Lake Titicaca reveals a large-scale environmental concern |journal=The Science of the Total Environment |volume=487 |pages=233–244 |doi=10.1016/j.scitotenv.2014.03.134 |issn=1879-1026 |pmid=24784748}}</ref> In 2012, the GNF nominated the lake "Threatened Lake of the Year".<ref>{{cite web |url=https://www.globalnature.org/35755/Living-Lakes/Threatened-Lake-2016/Threatened-Lake-2012/resindex.aspx |title=Threatened Lake of the Year 2012 |publisher=GNF |date=22 March 2012 |access-date=2 March 2017 |archive-date=28 November 2020 |archive-url=https://web.archive.org/web/20201128135332/https://www.globalnature.org/35755/Living-Lakes/Threatened-Lake-2016/Threatened-Lake-2012/resindex.aspx |url-status=live }}</ref>

==Name==
[[File:Templo del Sol Titicaca.jpg|thumb|Drawing of Inca Templo del Sol (as seen in 1887) on the Isla del Sol, where the mummified body of [[Manco Cápac]] came to rest.|left]]
Given the various [[Indigenous peoples of the Americas|Indigenous]] groups that occupied the Lake Titicaca region, it likely lacked a single, commonly accepted name in prehistoric times and at the time the Spaniards arrived.<ref name="Standish2003a">Standish, C. (2005) ''Ancient Titicaca: The Evolution of Complex Society in Southern Peru and Northern Bolivia.'' Oakland, California, University of California Press. 338 pp. {{ISBN|978-0520232457}}</ref>

The terms ''titi'' and ''caca'' can be translated in several ways. In [[Aymara language|Aymara]], ''titi'' can be translated as either [[cougar|puma]], [[lead]], or a heavy metal. The word ''caca'' (''kaka'') can be translated as white or grey hairs of the head and the term ''k’ak’a'' can be translated as either crack or fissure, or alternatively, comb of a bird.<ref name="Standish2003a" /> According to [[Weston La Barre]], the Aymara considered in 1948 that the proper name of the lake is ''titiq’aq’a,'' which means gray, discolored, lead-colored puma. This phrase refers to the sacred carved rock found on the [[Isla del Sol]].<ref name="La Barre1948a">La Barre, W. (1948) ''The Aymara Indians of the Lake Titicaca Plateau, Bolivia.'' American Anthropological Association Memoir. no. 68, pp. 208–210.</ref> In addition to names including the term ''titi'' and/or ''caca,'' Lake Titicaca was also known as ''Chuquivitu'' in the 16th century. This name can be loosely translated as lance point. This name survives in modern usage in which the large lake is occasionally referred to as ''Lago Chucuito.''<ref name="Standish2003a" />

Stanish argues that the logical explanation for the origin of the name Titicaca is a corruption of the term ''thakhsi cala,'' which is the 15th- to the 16th-century name of the sacred rock on the Isla del Sol.<ref name="BauerOthers2001a">Bauer, B., and Stanish, C. (2001) ''Ritual and Pilgrimage in the Ancient Andes.'' Austin, Texas, University of Texas Press. 314 pp. {{ISBN|978-0292708907}}</ref> Given the lack of a common name for Lake Titicaca in the 16th century, the Spaniards are thought to have used the name of the site of the most important indigenous shrine in the region, ''thakhsi cala'' on the Isla del Sol, as the name for the lake. In time and with usage, this name developed into ''Titicaca.''<ref name="Standish2003a" />

Locally, the lake goes by several names. The southeast quarter of the lake is separate from the main body (connected only by the [[Strait of Tiquina]]) and the Bolivians call it Lago Huiñaymarca (also Wiñay Marka, which in Aymara means the Eternal City) and the larger part Lago Chucuito. The large lake also is occasionally referred to as Lago Mayor, and the small lake as Lago Menor.<ref name="Standish2003a" /> In Peru, these smaller and larger parts are referred to as Lago Pequeño and Lago Grande, respectively.<ref name="Dejoux" />

==Highest lake==
With a surface area of {{cvt|8372|km2|sqmi|0}} and an elevation of {{cvt|3812|m|ft|0}}, Lake Titicaca is often called the highest navigable lake in the world. That claim is generally considered to refer to commercial craft. Numerous smaller lakes around the world are at higher elevations,<ref>{{cite web |url=http://www.highestlake.com/highest-lake-world.html |title=The Highest Lake in the World |work=highestlake.com |access-date=27 April 2015 |archive-date=30 December 2016 |archive-url=https://web.archive.org/web/20161230162654/http://www.highestlake.com/highest-lake-world.html |url-status=live }}</ref> such as the {{convert|6000|m2}} crater lake of [[Ojos del Salado]], which at an elevation of {{convert|6480|-|6500|m}} is the overall highest lake in the world, and the {{cvt|280|km2|sqmi}} [[Lake Puma Yumco]], which at an elevation of {{convert|5,030|m|abbr=on}} is the highest large lake in the world.  For many years, the largest vessel afloat on Lake Titicaca was the 2,200-ton (2,425 U.S. tons), {{cvt|79|m|ft|adj=on}} [[SS Ollanta|SS ''Ollanta'']]. Today, the largest vessel is most likely the similarly sized train barge/float ''[[PeruRail#Shipping|Manco Capac]]'', operated by [[PeruRail]].

==Temperature==
The cold sources and winds over the lake give it an average surface temperature of {{cvt|10 |to| 14|C|F}}. In the winter (June – September), mixing occurs with the deeper waters, which are always between {{cvt|10|and|11|C|F}}.<ref>{{cite web |url=http://www.ilec.or.jp/database/sam/sam-04.html |title=Ago Titicaca (Lake Titicaca) |access-date=2010-03-10 |url-status=dead |archive-url=https://web.archive.org/web/20100612125716/http://www.ilec.or.jp/database/sam/sam-04.html |archive-date=2010-06-12}}</ref>

==Ecology==
[[File:Lake Titicaca Frog 1.JPG|thumb|left|Two ''[[Telmatobius]]'' species occur in the lake, the smaller, more coastal [[marbled water frog]] (pictured, at [[Isla del Sol]]) and the larger, more deep-water [[Titicaca water frog]].<ref name="Cossel2014">Cossel, Lindquist, Craig, and Luthman (2014). ''Pathogenic fungus Batrachochytrium dendrobatidis in marbled water frog Telmatobius marmoratus: first record from Lake Titicaca, Bolivia.'' Dis Aquat Organ. 112(1):83-7. [[doi: 10.3354/dao02778]]</ref>]]
Lake Titicaca is home to more than 530 aquatic species.<ref name="Kroll">Kroll; Hershler; Albrecht; Terrazas; Apaza; Fuentealba; Wolff; and Wilke (2012). ''The endemic gastropod fauna of Lake Titicaca: correlation between molecular evolution and hydrographic history.'' Ecol Evol. Jul 2012; 2(7): 1517–1530.</ref>

The lake holds large populations of water birds and was designated as a [[Ramsar Site]] on August 26, 1998. It has also been designated an [[Important Bird Area]] (IBA), in both Bolivia and Peru, by [[BirdLife International]] because it supports significant populations of many bird species.<ref name=bli>{{cite web |url= https://datazone.birdlife.org/site/factsheet/lago-titicaca-(sector-boliviano)-iba-bolivia|title=Lago Titicaca (Sector Boliviano)|author=<!--Not stated--> |date=2024|website= BirdLife Data Zone|publisher= BirdLife International|access-date= 2024-10-03}}</ref><ref name=bli2>{{cite web |url= https://datazone.birdlife.org/site/factsheet/14717|title=Ramis y Arapa (Lago Titicaca, sector Peruano)|author=<!--Not stated--> |date=2024|website= BirdLife Data Zone|publisher= BirdLife International|access-date= 2024-10-03}}</ref> Several [[threatened species]] such as the huge [[Titicaca water frog]] and the flightless [[Titicaca grebe]] are largely or entirely restricted to the lake.<ref name="Cossel2014" /><ref name="Fjeldsa1990">Fjeldså, J.; & Krabbe, N. (1990). ''Birds of the High Andes: A Manual to the Birds of the Temperate Zone of the Andes and Patagonia, South America.'' {{ISBN|978-8788757163}}</ref> 

In addition to the threatened Titicaca grebe, some of the birds associated with water at Titicaca are the [[white-tufted grebe]], [[Puna ibis]], [[Chilean flamingo]], [[Andean gull]], [[Andean lapwing]], [[white-backed stilt]], [[greater yellowlegs]], [[snowy egret]], [[black-crowned night-heron]], [[Andean coot]], [[common gallinule]], [[plumbeous rail]], various [[duck]]s, [[wren-like rushbird]], [[many-colored rush-tyrant]], and [[yellow-winged blackbird]].<ref name="Fjeldsa1990" />

[[File:Bird on the Uros islands (3399304315).jpg|thumb|[[Andean coot]] among [[Totora (plant)|totora]] sedges|left]]The [[Titicaca orestias]] has likely become extinct (last seen in 1938) due to competition and predation by the [[introduced species|introduced]] [[rainbow trout]] and the [[Neotropical silversides|silverside]] ''[[Odontesthes bonariensis]]''.<ref>Parenti, Lynne R. (1984). ''A taxonomic revision of the Andean Killifish Genus Orestias (Cyprinodontiformes, Cyprinodontidae).'' Bulletin of the American Museum of Natural History 178: 107–214.</ref> In addition to the Titicaca orestias, native fish species in the lake's basin are other species of ''[[Orestias (fish)|Orestias]]'', and the catfish ''[[Trichomycterus dispar]]'', ''[[Trichomycterus rivulatus|T. rivulatus]]'', and ''[[Astroblepus stuebeli]]'' (the last species not in the lake itself, but in associated ecosystems).<ref name="FEW" /> The many ''Orestias'' species in Lake Titicaca differ significantly in both habitat preference<ref name="Lauzanne1992">Lauzanne, L. (1992). Fish Fauna. pp. 405–448 in: Dejoux, C., eds. (1992). Lake Titicaca: a synthesis of limnological knowledge. {{ISBN|0-7923-1663-0}}</ref> and feeding behavior.<ref>Maldonado, E. E., Hubert, N. N., Sagnes, P. P., & De MÉrona, B. B. (2009). Morphology–diet relationships in four killifishes (Teleostei, Cyprinodontidae, Orestias) from Lake Titicaca. Journal of Fish Biology, 74(3), 502–520. {{doi|10.1111/j.1095-8649.2008.02140.x}}</ref> About 90% of the fish species in the basin are [[Endemism|endemic]],<ref name="FEW">Hales, J., and P. Petry (2013). ''[http://www.feow.org/ecoregions/details/titicaca Titicaca] {{Webarchive |url=https://web.archive.org/web/20150924012013/http://www.feow.org/ecoregions/details/titicaca |date=2015-09-24 }}''. Freshwater Ecoregions of the World. Retrieved 11 February 2013</ref> including 23 species of ''Orestias'' that only are found in the lake.<ref name="Vila2013">Vila, Morales, Scott, Poulin, Veliz, Harrod and Mendez (2013). Phylogenetic and phylogeographic analysis of the genus ''Orestias'' (Teleostei: Cyprinodontidae) in the southern Chilean Altiplano: the relevance of ancient and recent divergence processes in speciation. Journal of Fish Biology 82, 927–943.</ref>[[File:Criadero de peces en el Lago Titicaca cerca de Copacabana Bolivia.jpg|thumb|An artificial fish enclosure at a [[fish farming]] site near Copacabana, Bolivia]]Titicaca is home to 24 described species of [[freshwater snail]]s (15 endemics, including several tiny ''[[Heleobia]]'' spp.)<ref name="Kroll" /><ref>Segers, H.; and Martens, K; editors (2005). ''The Diversity of Aquatic Ecosystems.'' p. 46. Developments in Hydrobiology. Aquatic Biodiversity. {{ISBN|1-4020-3745-7}}</ref> and less than half a dozen [[bivalve]]s (all in family [[Sphaeriidae]]), but in general these are very poorly known and their [[Taxonomy (biology)|taxonomy]] is in need of a review.<ref>Slugina, Z.V. (2006). ''Endemic Bivalvia in ancient lakes.'' Hydrobiologia 568(S): 213–217.</ref> The lake also has an endemic [[species flock]] of [[amphipod]]s consisting of 11 ''[[Hyalella]]'' (an additional Titicaca ''Hyalella'' species is nonendemic).<ref>González, E.R.; and Watling, L. (2003). ''Two new species of ''Hyalella'' from Lake Titicaca, and redescriptions of four others in the genus (Crustacea: Amphipoda).'' Hydrobiologia 497(1-3): 181–204.</ref>

Reeds and other aquatic vegetation are widespread in Lake Titicaca. [[Totora (plant)|Totora]] sedges grow in water shallower than {{cvt|3|m|ft|0}}, less frequently to {{cvt|5.5|m|ft}}, but [[macrophyte]]s, notably ''[[Chara (alga)|Chara]]'' and ''[[Potamogeton]]'', occur down to {{cvt|10|m|ft}}.<ref name="Iltis1992">Iltis, A., and P. Mourguiart (1992). Higher Plants: Distribution and biomass. pp. 242–253 in: Dejoux, C., eds. (1992). Lake Titicaca: a synthesis of limnological knowledge. {{ISBN|0-7923-1663-0}}</ref> In sheltered shallow waters, such as the harbour of [[Puno]], ''[[Azolla]]'', ''[[Elodea]]'', ''[[Lemna]]'' and ''[[Myriophyllum]]'' are common.<ref name="Iltis1992" />

==Geology==
{{further|Altiplano Basin}}
[[File:Lake Titicaca - Road to Bolivia (8385839315).jpg|thumb|The intermontane basin surrounding Lake Titicaca]]
The Tinajani Basin, in which Lake Titicaca lies, is an intermontane basin. This basin is a [[pull-apart basin]] created by strike-slip movement along regional faults starting in the late [[Oligocene]] and ending in the late [[Miocene]]. The initial development of the Tinajani Basin is indicated by [[volcanic rock]]s, which accumulated between 27 and 20 million years ago within this basin. They lie upon an angular [[unconformity]] which cuts across pre-basin [[strata]]. [[Lake|Lacustrine]] [[sediment]]s of the Lower Tinajani Formation, which are exposed within the Tinajani Basin, demonstrate the presence of a pre-Quaternary, ancestral Lake Titicaca within it between 18 and 14 million years ago (Mya).<ref name="MaroccoOther1995a">Marocco, R., R. Baudino, and A. Lavenu, 1995, ''Intermontane Late Paleogene–Neogene Basins of the Andes of Ecuador and Peru: Sedimentologic and Tectonic Characteristics.'' in A.J. Tankard, R. Suárez Soruco, and H.J. Welsink, eds., pp. 597–613, Petroleum basins of South America: Memoir no. 62. American Association of Petroleum Geologists, Tulsa, Oklahoma.</ref> Little is known about the prehistory of Lake Titicaca between 14 Mya and 370,000 BP because the lake sediments dating to this period lie buried beneath the bottom of Lake Titicaca and have not yet been sampled by continuous coring.<ref name="FritzOther2007a">Fritz, S. C., P. A. Baker, G. O. Seltzer, A. Ballantyne, P. Tapia, H. Cheng, and R. L. Edwards, 2007, ''Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project.'' Quaternary Research 68(3):410–420.</ref>

The Lake Titicaca drilling project<ref name="FritzOther2007a"/> recovered a 136-m-long [[Core sample|drill core]] of sediments from the bottom of Lake Titicaca at a depth of {{cvt|235|m}} and at a location just east of Isla del Sol. This core contains a continuous record of lake sedimentation and paleoenvironmental conditions for Lake Titicaca back to about 370,000 BP. For this period of time, Lake Titicaca was typically fresher and had higher lake levels during periods of expanded regional glaciation that corresponded to global [[glacial period]]s. During periods of reduced regional glaciation that corresponded to global [[interglacial]] periods, Lake Titicaca had typically low lake levels.<ref name="FritzOther2007a"/><ref name="FritzOther2012a">Fritz, S.C., P.A. Baker, P. Tapia, T. Spanbauer, and K. Westover (2012) ''Evolution of the Lake Titicaca basin and its diatom flora over the last ~370,000 years.'' Palaeogeography, Palaeoclimatology, Palaeoecology 317–318:93–103.</ref>

Lacustrine sediments and associated [[terrace (geology)|terrace]]s provide evidence for the past existence of five major prehistoric lakes that occupied the Tinajani Basin during the [[Pliocene]] and [[Pleistocene]]. Within the northern Altiplano (Tinajani Basin), these prehistoric lakes were [[Lake Mataro]] at an elevation of {{cvt|3950|m}}, [[Lake Cabana]] at an elevation of {{cvt|3900|m}}, [[Lake Ballivián]] at an elevation of {{cvt|3860|m}}, Lake (North) Minchin at an elevation of {{cvt|3825|m}}, and [[Lake Tauca|Lake (North) Tauca]] at an elevation {{cvt|3815|m|||}}. The age of Lake Mataro is uncertain—it may date back to the Late Pliocene. Lake Cabana possibly dates to the Middle Pleistocene. Lake Ballivián existed between 120,000 and 98,000 BP. Two high lake stands, between 72,000 and 68,000 BP and 44,000–34,000 BP, have been discerned for [[Lake Minchin]] within the Altiplano. Another ancient lake in the area is [[Ouki]]. The high lake levels of [[Lake Tauca]] have been dated as having occurred between 18,100 and 14,100 BP.<ref name="Clapperton1993a">Clapperton, C. M., 1993, ''Quaternary Geology and Geomorphology of South America.'' Elsevier Science, Amsterdam, 779 pp.</ref><ref name="RouchyOthers1996a">Rouchy, J. M., M. Servant, M. Fournier, and C. Causse, 1996, ''Extensive carbonate algal bioherms in Upper Pleistocene saline lakes of the central Altiplano of Bolivia'': Sedimentology 43(6):973–993.</ref><ref name="PlaczekOthers2006a">Placzek, C., J. Quade, and P. J. Patchett, 2006, ''Geochronology and stratigraphy of Late Pleistocene lake cycles on the Southern Bolivian Altiplano: implications for causes of tropical climate change.'' Geological Society of America Bulletin 118(5-6):515–532.</ref>

==Underwater archaeology==
Underwater excavations and surveys in and around Khoa reef, near the Island of Khoa, have recovered thousands of artifacts.<ref name=Williams2020>Williams, A.R., 2020. ''[https://web.archive.org/web/20210226173054/https://www.nationalgeographic.com/history/article/centuries-old-inca-offering-discovered-sacred-lake Centuries-old Inca offering discovered in sacred lake.]'' National Geographic.</ref> These artifacts consist of ceramic feline incense burners, carved juvenile llamas, and well-crafted metal, shell, and stone ornaments. During the fifteenth and sixteenth centuries, Lake Titicaca was a mythical place and the location of a pilgrimage complex for the [[Inca|Incas]]. Part of this complex included Khoa reef as a location where offerings were dropped into the lake.<ref name=DelaereOthers2019> Delaere, C., Capriles, J.M. and Stanish, C., 2019. ''Underwater ritual offerings in the Island of the Sun and the formation of the Tiwanaku state.'' Proceedings of the National Academy of Sciences. 116(17): pp.8233-8238.</ref><ref name=DelaereOthers2020>Delaere, C. and Capriles, J.M., 2020. ''The context and meaning of an intact Inca underwater offering from Lake Titicaca.'' Antiquity, 94(376), pp.1030-1041.</ref>

==Climate==
Lake Titicaca has a [[Oceanic climate#Subpolar oceanic and cold subtropical highland varieties (Cfc, Cwc)|cold subtropical highland climate]]. The average annual precipitation is 610&nbsp;mm (24&nbsp;in) mostly falling in summer thunderstorms. Winters are dry with very cold nights and mornings and warm afternoons. Below are the average temperatures of the town of [[Juliaca]], in the northern part of the lake.

{{weather box
|location = [[Juliaca, Peru]] (1961–1990)
|metric first = yes
|single line = yes
|Jan high C = 16.7
|Feb high C = 16.7
|Mar high C = 16.5
|Apr high C = 16.8
|May high C = 16.6
|Jun high C = 16.0
|Jul high C = 16.0
|Aug high C = 17.0
|Sep high C = 17.6
|Oct high C = 18.6
|Nov high C = 18.8
|Dec high C = 17.7
|Jan low C = 3.6
|Feb low C = 3.5
|Mar low C = 3.2
|Apr low C = 0.6
|May low C = -3.8
|Jun low C = -7.0
|Jul low C = -7.5
|Aug low C = -5.4
|Sep low C = -1.4
|Oct low C = 0.3
|Nov low C = 1.5
|Dec low C = 3.0
|precipitation colour = green
|Jan precipitation mm = 133.3
|Feb precipitation mm = 108.7
|Mar precipitation mm = 98.5
|Apr precipitation mm = 43.3
|May precipitation mm = 9.9
|Jun precipitation mm = 3.1
|Jul precipitation mm = 2.4
|Aug precipitation mm = 5.8
|Sep precipitation mm = 22.1
|Oct precipitation mm = 41.1
|Nov precipitation mm = 55.3
|Dec precipitation mm = 85.9
|source 1 = Hong Kong Observatory,<ref>{{cite web |url=http://www.weather.gov.hk/wxinfo/climat/world/eng/s_america/ec_per/juliaca_e.htm |title=ClClimatological Information for Juliaca, Peru |publisher=Hong Kong Observatory |access-date=2011-05-19 |archive-url=https://web.archive.org/web/20160304072414/http://www.weather.gov.hk/wxinfo/climat/world/eng/s_america/ec_per/juliaca_e.htm |archive-date=2016-03-04 |url-status=dead}}</ref>|date=August 2010}}

==Islands==

===Uros===
{{details|Uru people}}
[[File:Islas flotantes de los Uros, Lago Titicaca, Perú, 2015-08-01, DD 30.JPG|thumb|An [[Uru people|Uros]] floating island in Peru]]

The "Floating Islands" are small, human-made islands constructed by the [[Uru people|Uros]] (or Uru) people from layers of cut totora, a thick, buoyant sedge that grows abundantly in the shallows of Lake Titicaca.<ref name=slate>{{cite journal |title=The Island People: The seventh hidden wonder of South America |first=Joshua |last=Foer |date=February 25, 2011 |journal=[[Slate (magazine)|Slate]] |url=http://www.slate.com/articles/life/world_of_wonders/2011/02/the_island_people.html |url-status=live |archive-url=https://web.archive.org/web/20161007101004/http://www.slate.com/articles/life/world_of_wonders/2011/02/the_island_people.html |archive-date=October 7, 2016}}</ref> The Uros harvest the sedges that naturally grow on the lake's banks to make the islands by continuously adding sedges to the surface.

According to legend, the Uru people originated in the Amazon and migrated to the area of Lake Titicaca in the [[pre-Columbian era]], where they were oppressed by the local population and were unable to secure land of their own.<ref name=slate/> They built the sedge islands, which could be moved into deep water or to different parts of the lake, as necessary, for greater safety from their hostile neighbors on land.

Golden in color, many of the islands measure about {{cvt|50|by|50|ft|order=flip}}, and the largest are roughly half the size of a football field.<ref name=slate/><ref name=natgeo>{{cite web |title=Rough Waters for Peru's Floating Islands |first=Zoltan |last=Istvan |website=National Geographic Channel |date=July 3, 2003 |url=http://news.nationalgeographic.com/news/2003/07/0703_030703_laketiticaca.html |url-status=dead |archive-url=https://web.archive.org/web/20160806103417/http://news.nationalgeographic.com/news/2003/07/0703_030703_laketiticaca.html |archive-date=August 6, 2016}}</ref> Each island contains several thatched houses, typically belonging to members of a single extended family.<ref name=slate/> Some of the islands have watchtowers and other buildings, also constructed of sedges.

Historically, most of the Uros islands were located near the middle of the lake, about {{cvt|9|mi|order=flip}} from the shore; however, in 1986, after a major storm devastated the islands, many Uros rebuilt closer to shore.<ref name=slate/> {{As of|2011}}, about 1,200 Uros lived on an archipelago of 60 artificial islands,<ref name=slate/> clustering in the western corner of the lake near [[Puno]], Titicaca's major Peruvian port town.<ref name=natgeo/> The islands have become one of Peru's tourist attractions, allowing the Uros to supplement their hunting and fishing by conveying visitors to the islands by motorboat and selling handicrafts.<ref name=slate/><ref name=natgeo/>

===Isla del Sol===
[[File:Isla de Sol, Lago Titicaca 3.jpg|thumb|[[Isla del Sol]] in Bolivia, with a raft made from [[Totora (plant)|totora]] on Lake Titicaca]]
Situated on the Bolivian side of the lake with regular boat links to the town of [[Copacabana, Bolivia|Copacabana]], [[Isla del Sol]] ("Island of the Sun") is one of the largest islands of the lake. Geographically, the terrain is harsh; it is a rocky, hilly island. No motor vehicles or paved roads are on the island. The main economic activity of the approximately 800 families on the island is farming, with fishing and tourism augmenting the subsistence economy.

Over 180 ruins remain on the island. Most of these date to the Inca period around the 15th century AD. Many hills on the island contain terraces, which adapt steep and rocky terrain to agriculture. Among the ruins on the island are the Sacred Rock, a labyrinth-like building called [[Chinkana]], Kasa Pata, and Pilco Kaima. In the religion of the Incas, the [[sun god]] was believed to have been born here.{{Citation needed|date=January 2010}}

During 1987–92, [[Johan Reinhard]] directed underwater archaeological investigations off of the Island of the Sun, recovering Inca and Tiahuanaco offerings. These artifacts are currently on display in the site museum of the village of Challapampa.<ref>Reinhard, Johan (1992) "Underwater Archaeological Research in Lake Titicaca, Bolivia." In Ancient America: Contributions to New World Archaeology, N. Saunders (ed.), Oxford: Oxbow Books, pp. 117–143.</ref>

===Isla de la Luna===
[[File:Isladelaluna.jpg|thumb|[[Isla de la Luna]] in Bolivia, with the [[Cordillera Real (Bolivia)|Cordillera Real]] in the background]]

[[Isla de la Luna]] is situated east from the bigger Isla del Sol. Both islands belong to the La Paz Department of Bolivia. According to legends that refer to [[Inca mythology]] Isla de la Luna (Spanish for "island of the moon") is where [[Viracocha]] commanded the rising of the moon. Ruins of a supposed Inca nunnery (Mamakuna) occupy the eastern shore.<ref>Bolivia, Lonely Planet 2007, {{ISBN|1-74104-557-6}}</ref>

Archaeological excavations<ref>Bauer, Brian and Charles Stanish 2001 ''Ritual and Pilgrimage in the Ancient Andes'' University of Texas press, Austin</ref> indicate that the [[Tiwanaku]] peoples (around 650–1000 AD) built a major temple on the Island of the Moon. Pottery vessels of local dignitaries dating from this period have been excavated on islands in Lake Titicaca. Two of them were found in the 19th century and are now in the [[British Museum]] in London.<ref>{{cite web |title=Collection search: You searched for Tiahuanaco Titicaca earthenware |url=https://www.britishmuseum.org/research/collection_online/search.aspx?searchText=Tiahuanaco+Titicaca+earthenware |url-status=live |archive-url=https://web.archive.org/web/20150924165231/http://www.britishmuseum.org/research/collection_online/search.aspx?searchText=Tiahuanaco+Titicaca+earthenware |archive-date=2015-09-24 |access-date=2017-06-15 |website=British Museum}}</ref> The structures seen on the island today were built by the Inca (''circa'' 1450–1532) directly over the earlier Tiwanaku ones.

===Amantani===
[[File:Intikawan Amantani.jpg|thumb|[[Amantaní|Amantani island]] in Peru]]

[[Amantani]] is another small island on Lake Titicaca populated by [[Quechua languages|Quechua]] speakers. About 4,000 people live in 10 communities on the roughly circular {{cvt|15|km2|sqmi|0|adj=on}} island. Two mountain peaks, called Pachatata (Father Earth) and Pachamama (Mother Earth) and ancient ruins are on the top of both peaks. The hillsides that rise up from the lake are terraced and planted with [[wheat]], [[potatoes]], and vegetables. Most of the small fields are worked by hand. Long stone fences divide the fields, and cattle and sheep graze on the hillsides.

No cars and no hotels are on the island. Since machines are not allowed on the island, all agriculture is done by hand. A few small stores sell basic goods, and a health clinic and six schools are found. Electricity was produced by a generator and provided limited power a few hours each day, but with the rising price of petroleum, they no longer use the generator. Most families use candles or flashlights powered by batteries or hand cranks. Small solar panels have recently been installed on some homes.

Some of the families on Amantani open their homes to tourists for overnight stays and provide cooked meals, arranged through tour guides. The families who do so are required to have a special room set aside for the tourists and must conform to a code specified by the tourist companies that help them. Guests typically take food staples (cooking oil, rice, etc., but no sugar products, as they have no dental facilities) as a gift, or school supplies for the children on the island. The islanders hold nightly traditional dance shows for the tourists, where they offer to dress them up in their traditional clothes and allow them to participate.

===Taquile===
[[File:Taquile Island.jpg|thumb|right|[[Taquile Island]] in Peru]]

[[Taquile]] is a hilly island located {{cvt|45|km}} east of Puno. It is narrow and long and was used as a prison during the Spanish Colony and into the 20th century. In 1970, it became property of the Taquile people, who have inhabited the island since then. The current population is around 2,200. The island is {{cvt|5.5|by|1.6|km}} in size (maximum measurements), with an area of {{cvt|5.72|km2}}. The highest point of the island is {{cvt|4050|m}} above sea level, and the main village is at {{cvt|3950|m}}. Pre-Inca ruins are found on the highest part of the island, and agricultural terraces on hillsides. From the hillsides of Taquile, one has a view of the tops of Bolivian mountains. The inhabitants, known as ''Taquileños'', are southern Quechua speakers.

<!-- Life on Taquile is still largely unchanged by mainland modernities. There are no cars on the island and no hotels and a few small stores sell basic goods. Most families use candles or flashlights powered by batteries or hand-cranks. Small solar panels have recently been installed on some homes. On clear nights, Taquile is a perfect place for star gazing and you furthermore experience much lightning in the horizon due to electric activity in the area.
 -->
Taquile is especially known for its handicraft tradition, which is regarded as being of the highest quality. "Taquile and Its Textile Art" were honored by being proclaimed "[[Masterpieces of the Oral and Intangible Heritage of Humanity]]" by UNESCO. Knitting is exclusively performed by males, starting at age eight. The women exclusively make yarn and weave.

Taquileans are also known for having created an innovative, community-controlled tourism model, offering home stays, transportation, and restaurants to tourists. Ever since tourism started coming to Taquile in the 1970s, the ''Taquileños'' have slowly lost control over the mass day-tourism operated by non-Taquileans. They have thus developed alternative tourism models, including lodging for groups, cultural activities, and local guides who have completed a 2-year training program. The local Travel Agency, Munay Taquile, has been established to regain control over tourism.

The people in Taquile run their society based on community collectivism and on the Inca moral code ''ama sua, ama llulla, ama qhilla,'' (do not steal, do not lie, do not be lazy). The island is divided into six sectors or ''suyus'' for crop rotation purposes. The economy is based on fishing, terraced farming based on potato cultivation, and tourist-generated income from the roughly 40,000 tourists who visit each year.

===Suriqui===
[[Suriqui Island]] lies in the Bolivian part of lake Titicaca (in the southeastern part also known as lake Wiñaymarka).<ref name="footprint">{{cite book |title=South American Handbook |last=Box |first=Ben |publisher=[[Footprint Books|Footprint Handbooks]] |year=1998 |pages=292 |isbn=978-0-8442-4886-8| title-link=South American Handbook}}</ref>

Suriqui is thought to be the last place where the art of [[reed boat]] construction survives, at least as late as 1998. Craftsmen from Suriqui helped [[Thor Heyerdahl]] in the construction of several of his projects, such as the reed boats ''[[Ra II]]'' and ''Tigris'', and a balloon gondola.<ref name="footprint" />

==Transport==
[[File:Puerto de Copacabana.jpg|thumb|Ferries and fishing boats in the port of [[Copacabana, Bolivia|Copacabana]]]]
The [[dual gauge]] [[car float]] ''Manco Capac'' links [[PeruRail]]'s {{Track gauge|1435mm|allk=on}} line at Puno with the [[Rail transport in Bolivia|Bolivian railways']] {{Track gauge|1000mm|allk=on|engvar=en-US}} line at [[Guaqui]].<ref>[http://home.fuse.net/peruvianrails/peruvianrails/text/southern_peru_railroads.htm Southern Peru Railroads]{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

===History===
[[File:SS Yavari in Puno, 2002.jpg|thumb|SS ''Yavari'' in Puno, 2002]]
The lake has had a number of steamships, each of which was built in the United Kingdom in "knock down" form with bolts and nuts, disassembled into many hundreds of pieces, transported to the lake, and then riveted together and launched.

In 1862 [[Thames Ironworks and Shipbuilding Company|Thames Ironworks]] on the [[River Thames]] built the iron-hulled [[sister ship]]s [[Yavari (ship)|SS ''Yavari'']] and [[BAP Puno (ABH-306)|SS ''Yapura'']] under contract to the [[James Watt]] Foundry of [[Birmingham]].<ref name="YavariStory">{{cite web |url=http://www.yavari.org/ |title=The Yavari Story |work=Yavari - Lake Titicaca - Peru |publisher=The Yavari Project |access-date=2011-05-20 |archive-date=2011-07-16 |archive-url=https://web.archive.org/web/20110716154036/http://www.yavari.org/ |url-status=live }}</ref> The ships were designed as combined cargo, passenger, and [[gunboat]]s for the [[Peruvian Navy]].<ref name="YavariStory" /> After several years' delay in delivery from the Pacific coast to the lake, ''Yavari'' was launched in 1870 and ''Yapura'' in 1873.<ref name="YavariStory" /> ''Yavari'' was {{cvt|100|ft|m|order=flip}} long, but in 1914 her hull was lengthened for extra cargo capacity and she was re-engined as a [[motor vessel]].<ref name="YavariStory" />

In November 1883, during the final phase of the [[War of the Pacific]], the Chilean military command sent the {{ship|Chilean torpedo boat|Colo Colo}} to the lake, via railroad, from [[Mollendo]] to [[Puno]] to [[Chilean patrol of Lake Titicaca|control the area]].<ref>{{cite book |last=Tromben Corbalán |first=Carlos |date=2017 |title=La Armada de Chile: una historia de dos siglos |url= |language=es |volume=I |location=Chile |publisher=RIL Editores |isbn=978-956-01-0431-1 |page=674}}</ref><ref>{{cite book |last=Sater |first=William F. |date=2007 |title=Andean Tragedy: Fighting the War of the Pacific, 1879–1884 |url=https://books.google.com/books?id=etT0iVZW73MC |location=Lincoln and London |publisher=University of Nebraska Press |isbn=978-0-8032-4334-7 |page=344 |access-date=2017-02-09 |archive-date=2020-04-01 |archive-url=https://web.archive.org/web/20200401092428/https://books.google.com/books?id=etT0iVZW73MC |url-status=live }}</ref> It was the first warship to navigate the lake.<ref>{{cite journal |last=Milesi Sebástian |first=Sebastiano |date=2015 |title=Expedición naval al lago Titicaca por la Marina de Chile, en el año 1883 |url=https://www.ligamar.cl/files/archivos/revista-2015.pdf |language=es |location=Valparaíso, Chile |journal=Revista Mar, Liga Marítima de Chile |volume= |issue=201 |pages=87–90 |access-date=2021-06-24 |archive-date=2021-06-24 |archive-url=https://web.archive.org/web/20210624205947/https://www.ligamar.cl/files/archivos/revista-2015.pdf |url-status=live }}</ref>

In 1892, [[William Denny and Brothers]] at [[Dumbarton]] on the [[River Clyde]] in Scotland built {{SS|Coya}}.<ref name="Clyde">{{cite web |last1=Cameron |first1=Stuart |last2=Robinson |first2=George |last3=Strathdee |first3=Paul |title=SS Coya |work=Clyde-built Database |url=http://www.clydesite.co.uk/clydebuilt/viewship.asp?id=10696 |archive-url= https://web.archive.org/web/20090821142237/http://www.clydesite.co.uk/clydebuilt/viewship.asp?id=10696 |url-status= usurped |archive-date= 2009-08-21 |access-date= 2011-05-20}}</ref> She was {{cvt|170|ft|m|order=flip}} long and was launched on the lake in 1893.<ref name="Clyde" />

In 1905, [[Earle's Shipbuilding]] at [[Kingston upon Hull]] on the [[Humber]] built {{SS|Inca}}.<ref name="YavariSteamers">{{cite web |url=http://www.yavari.org/lake-steamers.html |title=The Lake Steamers – Post 1900 |work=Yavari – Lake Titicaca – Peru |publisher=The Yavari Project |access-date=2011-05-21 |url-status=dead |archive-url=https://web.archive.org/web/20110928034026/http://www.yavari.org/lake-steamers.html |archive-date=2011-09-28}}</ref><ref name="Cruise">{{cite web |url=http://cruiselinehistory.com/?p=4478 |title=The SS Ollanta |last=Grace |first=Michael L |date=2009-11-16 |work=Cruising the Past |access-date=2011-05-20 |archive-date=2011-07-24 |archive-url=https://web.archive.org/web/20110724153610/http://cruiselinehistory.com/?p=4478 |url-status=live }}</ref> By then, a railway served the lake, so the ship was delivered in kit form by rail.<ref name="Cruise" /> At {{cvt|220|ft|m|order=flip}} long and 1,809 tons (1,994 U.S. tons), ''Inca'' was the lake's largest ship thus far.<ref name="Cruise" /> In the 1920s, Earle's supplied a new bottom for the ship, which also was delivered in kit form.<ref name="Cruise" />[[File:Alpaca y la isla Challeca.jpg|thumb|A view of Lake Titicaca and Chelleca island in the background. [[Alpaca|Alpacas]] are a common sight along the shores of the lake.]]Trade continued to grow, so in 1930, Earle's built {{SS|Ollanta}}.<ref name=YavariSteamers/><ref name=Cruise/> Her parts were landed at the Pacific Ocean port of [[Mollendo]] and brought by rail to the lake port of Puno.<ref name=Cruise/> At {{cvt|260|ft|m|order=flip}} long and 2,200 tons (425 U.S. tons), she was considerably larger than the ''Inca'', so first a new [[slipway]] had to be built to build her.<ref name=Cruise/> She was launched in November 1931.<ref name=Cruise/>

In 1975, ''Yavari'' and ''Yapura'' were returned to the Peruvian Navy, which converted ''Yapura'' into a [[hospital ship]] and renamed her [[BAP Puno (ABH-306)|BAP ''Puno'']].<ref name=YavariStory/> The Navy discarded ''Yavari'', but in 1987, charitable interests bought her and started restoring her.<ref name=YavariStory/> She is now moored at Puno Bay and provides static tourist accommodation while her restoration continues.<ref name=YavariStory/> ''Coya'' was beached in 1984, but restored as a floating restaurant in 2001.<ref name=YavariSteamers/> ''Inca'' survived until 1994, when she was broken up.<ref name=YavariSteamers/> ''Ollanta'' is no longer in scheduled service, but PeruRail has been leasing her for tourist charter operations.<ref>{{cite web |url=http://www.internationalsteam.co.uk/trains/peru03.htm |title=Steam in Peru 2001 |last=Dickinson |first=Rob |work=International Steam Pages |access-date=2011-05-20 |archive-date=2011-09-29 |archive-url=https://web.archive.org/web/20110929003448/http://www.internationalsteam.co.uk/trains/peru03.htm |url-status=live }}</ref>

==See also==
{{portal|Lakes}}
* [[Chiripa culture]]
* [[Extremes on Earth]]
* [[Ilave River]]
* [[List of obscene place names]]
* [[Sacred waters]]
* [[Taraco|Taraco Peninsula]]
* [[Titicaca National Reservation]]
* [[Tourism in Bolivia]]
* [[Tourism in Peru]]
* [[Yampupata Peninsula]]

==Notes==
{{noteslist}}

==References==
{{Reflist}}

==External links==
{{Commons category}}
{{Wikivoyage}}
* [http://www.laketiticaca.com Lake Titicaca – The Highest Navigable Lake in the World]
* [http://www.crwflags.com/fotw/flags/bo~.html Bolivian Navy and Naval Ensign]
* [https://onlinelibrary.wiley.com/doi/full/10.1046/j.1440-1770.2001.00151.x Management issues in the Lake Titicaca and Lake Poopo system: Importance of developing a water budget]
* [http://www.discover-peru.org/lake-titicaca/ Peru Cultural Society – Lake Titicaca History]

{{Altiplano lakes and paleolakes |state=expanded}}
{{Authority control}}

{{DEFAULTSORT:Titicaca}}
[[Category:Lake Titicaca| ]]
[[Category:Ancient lakes]]
[[Category:Mountain lakes]]
[[Category:Important Bird Areas of Bolivia]]
[[Category:Important Bird Areas of Peru]]
[[Category:Ramsar sites in Bolivia]]
[[Category:Ramsar sites in Peru]]
[[Category:Lakes of Peru]]
[[Category:Lakes of La Paz Department (Bolivia)]]
[[Category:Bolivia–Peru border]]
[[Category:International lakes of South America]]
[[Category:Lakes of the Department of Puno]]
[[Category:Altiplano]]