Mumlava

The German name of the river is Mummel. It was derived from the word {{lang|de|mummeln}}, i.e. 'mumble', referring to the sounds the river makes. The Czech name was created from the German name.{{cite journal |last=Pilous|first=Vlastimil|title=Vodopády: Mumlavský vodopád|url=https://krkonose.krnap.cz/apex/f?p=104:4:::NO:RP,4:P4_ID,P4_CP:2011-07-15,2|publisher=Krkonoše National Park|journal=Krkonoše – Jizerské hory|pages=20–21|volume=7|year=2011|language=cs|access-date=2024-12-10}}

File:Harrachov, Mumlavský vodopád (5).jpg

The Mumlava originates in the territory of Vítkovice in the Giant Mountains at an elevation of {{cvt|1364|m}} and flows to Harrachov, where it enters the Jizera River at an elevation of {{cvt|570|m}}. It is {{convert|12.6|km|abbr=on}} long.{{cite web |title=Vodní toky|url=https://mapy.chmi.cz/ords/chmi_app/r/fewshlprf/stream-list?|work=Evidence hlásných profilů|publisher=Czech Hydrometeorological Institute|language=cs|access-date=2024-12-10}} Its drainage basin has an area of {{convert|51.6|km2|abbr=on}}.{{cite web |title=Povodňový plán města Harrachov: Hydrologické údaje|url=https://www.edpp.cz/har_hydrologicke-udaje/|work=Elektronický digitální povodňový portál|language=cs|access-date=2024-12-10}} The average discharge at its mouth is {{convert|1.98|m3/s|abbr=on}}.{{cite web |title=Evidenční list hlásného profilu č.63|url=https://hydro.chmi.cz/hppsevlist/download?seq=20214815|publisher=Czech Hydrometeorological Institute|language=cs|access-date=2024-12-10}}

The longest tributaries of the Mumlava are:

File:Krkonoše, Mumlavský vodopád.jpgs in the Mumlava]]

The river flows through the municipal territories of Vítkovice, Rokytnice nad Jizerou and Harrachov. The upper course of the river (until its confluence with the Malá Mumlava Creek) is also called Velká Mumlava.

The river is known for the Mumlava Waterfall, which is the biggest and one of the most famous waterfalls in the Czech Republic. It has a flow rate of 800 L/s and a height of {{cvt|8.9|m|ft|abbr=on}}.{{cite web |title=Nejvyšší a největší vodopády ČR|url=https://www.rekordy-prirody.cz/nejvyssi-a-nejvetsi-vodopady-cr/|work=Rekordy přírody|language=cs|date=2017-06-07|access-date=2024-12-10}} The Mumlava Waterfall is a popular tourist destination. It is located close to Harrachov and easy accessibility makes it the most visited waterfall in the country.{{cite web |title=Mumlavský vodopád v Harrachově je v tuzemsku nejnavštěvovanější|url=https://www.novinky.cz/clanek/vase-zpravy-mumlavsky-vodopad-v-harrachove-je-v-tuzemsku-nejnavstevovanejsi-40197268|work=Novinky.cz|language=cs|date=2018-09-08|access-date=2024-12-10}}

The water flow has ground out the so-called giant's kettles in the granite riverbed at the waterfall site. They are up to {{cvt|2.9|m}} deep. In winter, the water stream sometimes freezes and creates an icefall.{{cite web |title=Mumlavský vodopád v Krkonoších|url=https://www.kudyznudy.cz/aktivity/mumlavsky-vodopad-v-krkonosich|publisher=CzechTourism|language=cs|access-date=2024-12-10}}{{cite web |title=Naučná stezka Živá mrtvá Mumlava|url=https://www.krnap.cz/media/l30f3lrx/krnap_brozura_naucne_stezky-2_w.pdf|publisher=Krkonoše National Park|pages=34–37|language=cs|access-date=2024-12-10}}

Only a minimum of animals live in the river. This is a natural condition, not caused by humans.

The Mumlava is suitable for river tourism. However, only the last four kilometres are accessible because of the river's location in the Krkonoše National Park, and the river is only suitable for experienced paddlers.{{cite web |title=Mumlava – čistokrevná creekovačka|url=https://www.padler.cz/vodacky-pruvodce/mumlava-cistokrevna-creekovacka/|publisher=Pádler|language=cs|access-date=2024-12-11}}

• List of rivers of the Czech Republic

{{reflist}}

{{commons category|Mumlava}}

• [https://hydro.chmi.cz/hppsoldv/hpps_prfdyn.php?seq=20214815 River flow at Janov – Harrachov station] – Flood Warning and Forecasting Service of the Czech Hydrometeorological Institute

{{authority control}}

Category:Rivers of the Liberec Region

Category:Rivers of the Czech Republic