Draft:Most Lake (missing template, references)
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The Most Lake is an anthropogenic lake in the Starý Most sector of the Most city in the Most district of the Ústí nad Labem region. The lake came to be as a result of reclamation of an area formerly used as a lignite mine, and was named after a city which was demolished in that same area because of the mine. The lake spans 311 ha, has a length of 2,5 km and a width of 1,5 km. The water level is 199 m above the mean sea level. Maximum
| Most lake | |
|---|---|
 | |
| Location | Most I, Kopisty, Pařidla, Konobrže, Most region |
| Type | anthropogenic |
| Primary inflows | underground water supply from the industrial water supply Nechranice |
| Primary outflows | without outflow |
| Basin countries | Czech republic |
| Managing agency | Most |
| Max. length | 2.5 km |
| Max. width | 1.5 km |
| Surface area | 311 ha (3.11 km²) |
| Max. depth | 71 m |
| Water volume | 68.9 million m³ |
| Surface elevation | 199 metres above mean sea level |
| Settlements | Starý Most, Most |
depth of the lake is 71 m, and its volume is 69,8 million m³ as its average depth is 22 m. The lake is open to the public since 12th september 2020.
Location
[edit]The lake is located between the city Most (1,5 km away), a chemical plant area (Unipetrol a.s. and Česká rafinérská a.s.) which is located in Litvínov-Záluží (2 km away) and the Braňany municipality (3 km away). The lake is below the Hněvín hill (399 metres above mean sea level) (1 km away) and is located directly on top of the Most city which was demolished in the 70s of 20th century to make room for the lignit mine Ležáky.[1] There is a relocated late gothic church of the Assumption of the Virgin Mary near the lake and a sculpture of the saint John Nepomucký.
The lake's premises have been added to the public transport network in May 2021 of the Most city as a part of the line 16 route.[2]
History
[edit]The lake was created in place of the former lignite Ležáky mine, which was in operation between 70s of the 20th century up until 31st of August 1999. The area affected by the mining activity was revitalized by Palivový kombinát Ústí.[3] The lake's name was officially selected on 24th September 2020 by the city councilors.[4] This decision came as a result of the working title that Palivový kombinát Ústí and the statutory city Most agreed upon at the start of the 21st century. This working title was then made public the moment that the filling up of the lake was commenced on 24th October 2008.[5]
A company by the name of Cheminvest built a levee and a wharf at the lake. The wharf's capacity is up to several tenths of ships. The reclamation work was originally to be finished in 2018,[6] however at the start of 2019 an announcement was made that the lake won't be accessible for recreational purposes for another year due to the lake's geological instabilities in the bedrock. In addition to that there were also delays in regards to the construction of the floating piers and other components which were to be the basis of the integrated emergency system[7]. The lake was officially opened to the public on 12th September 2020[8], albeit without celebrations due to the coronavirus crisis, because of which the Most festivities were also cancelled.[9]
In place of the Church of the Assumption of the Virgin Mary were planted chestnut, cherry and mulberry trees. The trees form the church's former location together with several paths.[10]
Lake's water level regime
[edit]Water intake of the lake
[edit]The original intent from 2002 relied on setting up the river Bílina as the water source, however after further inspection by the regional sanitation station the river was deemed unfit due to a high degree of pollution. The analyzed area from which water would flow into the lake was classified as pollution V (heavily polluted water).[11]
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A better water source was selected in the form of the river Ohře, which would be drawn from the Nechranice industrial water supply and from the fixed weir Stranná located by a municipality of the same name (Stranná) at the 99.230 river mile. Another source of water was also the approximately 5 kilometres distant Kohinoor underground mine, and then some came from the lake's own drainage basin.
Filling up of the lake was officially commenced on 24th October 2008[12] and according to the project was to be finished by 2011. Festivities were commenced on the occasion of the second anniversary of the project's commencement. During the filling up the area was guarded and free movement in the area was restricted, and the filling up was stopped on 25th June 2012. It was then resumed in May 2014 to get the lake's water level to the final height 199 metres above mean sea level. The final height was reached in September 2014, since when the lake has been in testing phase up until the end of 2019. By 30th June the lake's water target was 198.03 metres above mean sea level, which corresponds to 297.91 hectares and a total volume of 69.809 million m³. From the commencement of the lake's filling up the water level rose 52.91 metres. From May 2014 do September 2014 the lake received 5.0 million m³ of water, so the 309.41 hectare lake had a total volume of 70.480 million m³.[13]
Water-level maintenance
[edit]
The year 2016 was warmer than expected and as such the lake didn't intake enough water naturally, thus it was filled up again from the Ohře river, which turned out expensive. The original water level fluctuation of ±60 cm was first lowered to ±5 cm, then removed entirely to prevent drying of the banks and then the subsequent need to re-soak them during a filling-up. There was a water treatment plant planned for construction, and it was meant to treat the water coming in from the Kohinoor underground mine into the Most lake.[14] The lake costs 20 million crowns annually, and up to half of this amount can be expenses on securing the water intake from Ohře.[15]
Fauna
[edit]6 species of aquatic molluscs were found in the lake in 2013 - a combination of 5 species of freshwater snails and one species of bivalve mollusc.[16]
Water birds
[edit]According to one Most ornithology club bird census which took place in january 2019, the number of water birds present was again higher than in 2018. The experts counted a total of 6042 birds across 22 species. The dominant among these species were black-headed gull (1700 specimen) and the eurasian coot (1800 specimen). Then there were also frequent common gull, caspian gull, european herring gull, yellow-legged gull, common pochard and tufted duck. There were also sightings of swans, ducks, herons and cormorants. Among rare sightings were common goldeneye, red-crested pochard, common merganser, smew, black-throated loon, red-necked grebe, black-necked grebe, common reed bunting, meadow pipit and velvet scoter. According to the Most ornithologists the total water bird count is high and puts the Most lake among the top 10 water bird wintering grounds in all of Czech republic.[17]
The Most lake in 2018
[edit]-
Ohře intake point -
View towards Hněvín castle -
Weir in the lake -
Landmass created by erosion of mine's borders -
Educational trail „Napouštění jezera Most“ -
Located in former lignite Ležáky mine
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Links
[edit]References
[edit]- ^ "the lake on a tourism website". August 12, 2024. Retrieved August 12, 2024.
- ^ redakce (2021-05-02). "Město Most přivedlo MHD až k jezeru". Zdopravy.cz (in Czech). Retrieved 2021-05-08.
- ^ "Jezero Most". Palivový kombinát Ústí. Retrieved 2018-07-01.
{{cite web}}: Unknown parameter|datum archivace=ignored (help); Unknown parameter|nedostupné=ignored (help); Unknown parameter|url archivu=ignored (help) - ^ "Jedno z největších jezer Česka se oficiálně jmenuje Most. Nachází se na místě bývalého lomu | Domov". Lidovky.cz. 2020-09-24. Retrieved 2021-05-08.
- ^ Prokeš, Petr (4 June 2020). "Petr Lenc - Název vznikl jako výraz vzpomínek a hrdosti na město, co muselo ustoupit těžbě". Krušnohor č. 6, roč. 2020, STR. 22, na webu v seznamu vlevo pod heslem "zpravodaj". SBD Krušnohor. Retrieved 2020-06-04.
- ^ KAŠPAR, Jiří a MĚSKOVÁ, Lenka. Rekultivace a voda. In: Hornická Příbram ve vědě a technice: [sborník anotací: 14. 10.–16. 10. 2003 Příbram]. [ISBN 80-239-5209-9.] Dostupné z: http://slon.diamo.cz/hpvt/2003/sekce_z/PZ11%20P.htm
- ^ Mendlová, Zuzana (2019-01-08). "Jezero Most se otevře až příští rok, práce zbrzdily potíže s podložím". iDNES.cz (in Czech). Retrieved 2024-08-12.
- ^ ČTK, iDNES cz (2020-09-12). "Větší než Mácháč, hluboké jako Orlík. Jezero Most se otevřelo návštěvníkům". iDNES.cz (in Czech). Retrieved 2024-08-12.
- ^ "Jezero Most se otevřelo veřejnosti - Novinky". www.novinky.cz (in Czech). 2020-09-14. Retrieved 2024-08-12.
- ^ "Jezero Most". Jezero Most. 15 August 2023.
- ^ "Stavy vodních toků | Ekologické centrum Most". www.ecmost.cz. Retrieved 2024-08-12.
- ^ ČT24. "Na Mostecku vzniká největší české jezero". ct24.ceskatelevize.cz (in Czech). Retrieved 2024-08-12.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ "Jezero Most | Palivový kombinát Ústí, s. p." 2018-02-08. Archived from the original on 2018-02-08. Retrieved 2024-08-12.
- ^ Kassal, Tomáš (2016-07-07). "Z jezera Most se odpařuje víc vody, než počítal projekt. Stojí to miliony". iDNES.cz (in Czech). Retrieved 2024-08-12.
- ^ "Nejluxusnější jezero v zemi". Vol. XXXI, no. 32. 3–9 August 2020. pp. 30–35.
- ^ Beran, Luboš (2013-12-01). "Vodní měkkýši nově vzniklého jezera Most v severních Čechách [Freshwater molluscs of the Most, a newly created lake in Northern Bohemia (Czech Republic)]". Malacologica Bohemoslovaca. 12: 89–92. doi:10.5817/MaB2013-12-89. ISSN 1336-6939.
- ^ Vokurka, Martin (2019-01-20). "Pozoruhodná divočina mezi komíny. Ptáci si oblíbili zatopenou obří jámu u Mostu". Deník.cz (in Czech). Retrieved 2024-08-12.