Sezill Creek

{{Infobox river | name = Sezill Creek | name_native = | name_native_lang = | name_other = | name_etymology =  | image = File:Edziza042909-- 040-7.jpg | image_caption = Sezill Creek canyon with [[Mount Edziza]] in the background | map = | map_size = | map_caption = | pushpin_map = British Columbia | pushpin_map_size = | pushpin_map_caption = Mouth of Sezill Creek  | subdivision_type1 = Country | subdivision_name1 = [[Canada]] | subdivision_type2 = Province | subdivision_name2 = [[British Columbia]] | subdivision_type3 = District | subdivision_name3 = [[Cassiar Land District]] | subdivision_type4 = | subdivision_name4 = | subdivision_type5 = | subdivision_name5 =  | length = {{convert|12|km|abbr=on}}<ref name="KF">Elevation, length and coordinates derived from [[Google Earth]] and the [https://geonames.nrcan.gc.ca/search-place-names/search Canadian Geographical Names Database]</ref> | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location = | discharge1_min = | discharge1_avg = {{convert|1.51|m3/s|cuft/s|abbr=on}}<ref name=watertool>{{cite web |url= https://nwwt.bcwatertool.ca |title= Northwest Water Tool |work= BC Water Tool |publisher= GeoBC, Integrated Land Management Bureau, Ministry of Agriculture and Lands, Government of British Columbia |accessdate= 2023-09-26}}</ref> | discharge1_max =  | source1 = [[Mount Edziza]] | source1_location = [[Big Raven Plateau]] | source1_coordinates = {{coord|57|41|14|N|130|42|14|W|display=inline}}<ref name="KF"/> | source1_elevation = {{convert|1858|m|abbr=on}}<ref name="KF"/> | mouth = [[Taweh Creek]] | mouth_location = | mouth_coordinates = {{coord|57|41|49|N|130|52|51|W|display=inline,title}}<ref name="KF"/> | mouth_elevation = {{convert|879|m|abbr=on}}<ref name="KF"/> | progression = | river_system = | basin_size = {{convert|51.6|km2|abbr=on}}<ref name=watertool/> | tributaries_left = | tributaries_right = | custom_label = [[Topographic map|Topo map]] | custom_data = [[National Topographic System|NTS]] {{Canada NTS Map Sheet|104|G|10}} | extra = }}

'''Sezill Creek''' is a [[tributary]] of [[Taweh Creek]], which in turn is a tributary of [[Mess Creek]], part of the [[Stikine River]] [[drainage basin|watershed]] in northwest part of the [[Provinces and territories of Canada|province]] of [[British Columbia]], Canada.<ref name="bcgnis">{{BCGNIS|15312|Sezill Creek|access-date=2023-09-29}}</ref> It flows generally northwest for roughly {{convert|12|km|abbr=on}} to join Taweh Creek about {{convert|5|km|abbr=on}} east of Taweh Creek's confluence with Mess Creek.<ref name="KF"/><ref name="bcgnis"/><ref name="cgndb">{{cite cgndb|id=JBBIP|title=Sezill Creek|access-date=2023-09-28}}</ref> Sezill means "it is hot" in the [[Tahltan language]], referring to a group of [[hot spring]]s that occur along the creek.<ref name="bcgnis"/>

Sezill Creek's [[drainage basin|watershed]] covers {{convert|51.6|km2|abbr=on}} and its mean annual [[Discharge (hydrology)|discharge]] is estimated at {{convert|1.51|m3/s|cuft/s|abbr=on}}.<ref name=watertool/> The mouth of Sezill Creek is located about {{convert|28|km|abbr=on}} southeast of [[Telegraph Creek]], about {{convert|56|km|abbr=on}} southwest of [[Iskut]] and about {{convert|98|km|abbr=on}} southwest of [[Dease Lake]].<ref name="KF"/> Sezill Creek's watershed's [[land cover]] is classified as 36.2% [[Barren vegetation|barren]], 24.7% [[shrubland]], 15% [[Conifer|conifer forest]], 12.4% snow/glacier, 11.1% [[Herbaceous plant|herbaceous]], and small amounts of other cover.<ref name=watertool/>

Sezill Creek is in [[Mount Edziza Provincial Park]] which lies within the traditional territory of the [[Tahltan]] people.<ref name="HR">{{cite map|url=https://volcano.si.edu/maps/GVAlaskaCanada/G910509-006.jpg|archive-url=https://web.archive.org/web/20210502071600/https://volcano.si.edu/maps/GVAlaskaCanada/G910509-006.jpg|title=Telegraph Creek, Cassiar Land District, British Columbia|scale=1:250,000|series=104 G|map=A 502|edition=3|type=Topographic map|publisher=[[Department of Energy, Mines and Resources]]|year=1989|language=en,fr|access-date=2021-09-25|archive-date=2021-05-02}}</ref><ref>{{cite book|last1=Markey|first1=Sean|last2=Halseth|first2=Greg|last3=Manson|first3=Don|title=Investing in Place: Economic Renewal in Northern British Columbia|publisher=[[University of British Columbia Press]]|page=242|year=2012|isbn=978-0-7748-2293-0}}</ref>

==Geography== Sezill Creek originates from the western slope of the massive, glaciated [[Mount Edziza]] [[stratovolcano]] in the middle of the [[Big Raven Plateau]].<ref name="HR"/><ref>{{BCGNIS|2256|Mount Edziza|access-date=2023-10-01}}</ref> From its source between [[Ornostay Bluff]] and [[Koosick Bluff]], Sezill Creek flows generally northwest and through a vegetated canyon to Taweh Creek.<ref name="cgndb"/><ref name="HR"/> The head of Sezill Creek flows around an unnamed, low-lying [[bluff (geography)|bluff]] attaining an elevation of {{convert|1872|m|ft|abbr=on}}.<ref name="KF"/>

==Geology== Sezill Creek contains a large group of hot springs about {{Convert|7|km|mi|abbr=on}} above its junction with Taweh Creek.<ref name="Souther"/> These hot springs, known as the Sezill Hot Springs or the Taweh Hot Springs, extend along Sezill Creek for more than {{Convert|500|m|ft|abbr=on}}.<ref name="Souther"/><ref>{{BCGNIS|15315|Sezill Hot Springs|access-date=2023-09-29}}</ref> They occur at an elevation of {{Convert|1310|m|ft|abbr=on}} and contain extensive [[tufa]] deposits.<ref name="Souther"/><ref>{{cite gvp|vn=320060|vtab=Subfeatures|title=Edziza: Synonyms & Subfeatures|archive-date=2021-08-10|access-date=2021-10-03}}</ref> Their close association with the recently active [[Snowshoe Lava Field]] suggests that they may be discharging from a shallow [[hydrothermal]] system driven by residual [[magma]]tic heat. The main hot spring discharges water at a temperature of {{Convert|46|C|F|abbr=on}}. A jet of {{Convert|43|C|F|abbr=on}} water on the north side of Sezill Creek is enriched with [[carbon dioxide]].<ref name="Souther"/>

Thin tongues of unglaciated [[pillow lava]] originating from the [[Mount Edziza volcanic complex]] extend into the upper part of Sezill Creek canyon. The distal end of this pillow flow has been cut by Sezill Creek to form a narrow, {{Convert|6|m|ft|adj=mid|-deep|abbr=on}} [[box canyon]]. [[Tuff breccia]] consisting of [[volcanic block|blocks]] and irregular globules of [[vesicular texture|vesicular]] [[basalt]] in a granular [[matrix (geology)|matrix]] commonly underlies the pillow flow.<ref name="Souther">{{cite report|last1=Souther|first1=J. G.|author-link1=Jack Souther|title=The Late Cenozoic Mount Edziza Volcanic Complex, British Columbia|work=[[Geological Survey of Canada]]|publisher=Canada Communication Group|series=Memoir 420|year=1992|pages=230, 231|isbn=0-660-14407-7|doi=10.4095/133497|doi-access=free}}</ref>

==See also== *[[List of rivers of British Columbia]]

==References== {{reflist}}

[[Category:Cassiar Land District]] [[Category:Rivers of the Mount Edziza volcanic complex]] [[Category:Mount Edziza Provincial Park]] [[Category:Stikine Country]] [[Category:Tahltan]] [[Category:Mount Edziza]]