{{Infobox body of water | name = Trylen | image = Trylen.jpg | caption = Panorama from the eastern shore of lake Trylen | alt = Photograph | image_size = 250 | pushpin_map = Sweden Stockholm | pushpin_map_alt = Location of lake | image_bathymetry = | caption_bathymetry = | location = | coords = {{coord|59|10|0|N|18|06|25|E|region:SE_type:waterbody_scale:100000|display=inline,title}} | type = | inflow = Local surface water | outflow = Övre Rudasjön | catchment = {{convert|3.0|ha|abbr=on}} | basin_countries = Sweden | length = | width = | area = {{convert|2|ha|abbr=on}} | depth = | max-depth = {{convert|3.7|m|abbr=on}}<ref>{{Cite web |url=http://www.huddinge.se/sv/natur/sjoar-och-vattendrag/trylen/ |title=Välkommen till Trylen - Huddinge kommun |access-date=2013-05-04 |archive-date=2013-02-01 |archive-url=https://web.archive.org/web/20130201144308/http://www.huddinge.se/sv/natur/sjoar-och-vattendrag/trylen/ |url-status=dead }}</ref> | volume = | residence_time = | shore = | elevation = {{convert|45|m|abbr=on}} | frozen = | islands = | cities = Huddinge | reference = <ref name="huddinge">''Trylen'', Huddinge Municipality</ref> }} '''Trylen''' is a small lake 17 km (10 mi) south of central Stockholm, Sweden. Shared by Huddinge Municipality and Haninge Municipality, it forms part of the Tyresån Lake System.
== Catchment area == With its catchment area characterized by morass and pine covered rock faces, Trylen is a popular spot for walking and bathing. Motorboats are not permitted on the lake. Fishing permits do not apply in the lake.<ref name="huddinge" />
=== Environmental influence === Nutrients only reaches the lake from the air, which makes water quality high.<ref name="huddinge" />
{| class="wikitable" |+ nutrition levels<ref>''Aktuellt näringstillstånd'', Stockholm County Council</ref> ! PTOT !! NTOT !! N/P-quota !! Chlor !! Sight depth !! Colour !! TOC !! pH !! Alk |- | 10 ug/L || 640 ug/L || 64 || 5 {{clarify|reason=5 a has no meaning|date=December 2019}}a ug/L || 0,7 m (max) || 150 mg/L || 20 mg/L || 6,2 || 0,09 mekv/L |}
== Flora and fauna == An inventory in 1998 documented common reed, water horsetail, ''Menyanthes'', yellow water-lily, white water-lily, floating-leaf pondweed, and flatleaf bladderwort. Additionally, there are red algae and mosses such as ''Fontinalis dalecarlica''<!---(Smal näckmossa)--->.<ref name="huddinge" />
Birds by the lake includes mallard and common goldeneye. Toads were reported in the lake in 2004, as were dragonflies such as brown hawkers and brilliant emerald. No reports are available concerning bats, fishes, and crayfish.<ref name="huddinge" />
== Notes == {{reflist}}
== References == * {{cite web | url = http://www.natur.huddinge.se/sjoar/trylen/trylen.htm | title = Trylen - överraskande minisjö på skogspromenaden | publisher = Huddinge Municipality | language = Swedish | date = 2005-09-21 | accessdate = 2008-06-08 }} * {{cite web |url = http://www.ab.lst.se/upload/dokument/miljo_och_halsa/miljoinformation/Sjoar%20och%20vattendrag/Tillstand%20PN%20sjoar.pdf |title = Aktuellt näringstillstånd - Sjöar |language = Swedish |publisher = Stockholm County Council |pages = 5 |date = 2005-09-10 |accessdate = 2008-06-08 |url-status = dead |archiveurl = https://web.archive.org/web/20060512060639/http://www.ab.lst.se/upload/dokument/miljo_och_halsa/miljoinformation/Sjoar%20och%20vattendrag/Tillstand%20PN%20sjoar.pdf |archivedate = 2006-05-12 }}
Category:Geography of Stockholm Category:Lakes of Stockholm County