Editing Lough Mask (section)

{{Short description|Lake in Counties Mayo and Galway, Ireland}}
{{Use dmy dates|date=June 2020}}
{{Use Irish English|date=June 2020}}
{{Infobox body of water
| name = Lough Mask
| native_name ={{native name|ga|Loch Measca}}
| image = Jetty on Lough Mask - geograph.org.uk - 1405148.jpg
| caption = 
| image_bathymetry = 
| caption_bathymetry = 
| pushpin_map         = Ireland
| pushpin_map_caption = Location of Lough Mask in Ireland
| location = [[County Mayo]], [[County Galway]]
| coords = {{coord|53|37|N|9|21|W|region:IE_type:waterbody_scale:500000|display=inline,title}}
| lake_type = Limestone lake
| inflow = 
| outflow = 
| catchment = {{convert|938.4|km2|abbr=on}}
| basin_countries = [[Ireland (state)|Ireland]]
| length = {{convert|16.1|km|abbr=on}}
| width = {{convert|6.4|km|abbr=on}}
| area = {{convert|83.43|km2|abbr=on}}
| depth = {{convert|15|m|ft|abbr=on}}
| max-depth = {{convert|58|m|ft|abbr=on}}
| volume = {{convert|1.3|km3|acre.ft|abbr=on}}
| residence_time = 0.28
| shore = 
| elevation = {{convert|20|m|abbr=on}}
| frozen = 
| islands = 
| cities = 
| reference = <ref name=EPA>{{cite web | url = http://www.epa.ie/pubs/reports/research/water/Final%20Report%20(2000-FS1-M1).pdf#page=18 | title = A Reference Based Typology and Ecological Assessment System for Irish Lakes | date = 2006 | pages = 18 | publisher = [[Environmental Protection Agency (Ireland)]] | accessdate = 20 March 2020}}</ref>
}}

'''Lough Mask''' ({{Irish place name|Loch Measca}})<ref name=logainm>{{cite web | url = https://www.logainm.ie/en/1166390 | title = Loch Measca/Lough Mask | work = Placenames Database of Ireland (logainm.ie) | publisher = [[Department of Culture, Heritage and the Gaeltacht]] and [[Dublin City University]] | accessdate = 20 March 2020}}</ref> is a limestone lake of about {{convert|83|km2|abbr=on}}<ref name=EPA/> in Counties [[County Mayo|Mayo]] and [[County Galway|Galway]], [[Republic of Ireland|Ireland]], north of [[Lough Corrib]]. Lough Mask is the middle of the three lakes, which empty into the [[Corrib River]], through [[Galway]], into [[Galway Bay]]. [[Lough Carra]] flows into Lough Mask, which discharges through the [[Cong Canal]] and underground passages in the limestone bedrock of the district.  The flows from the underground passages and the Cong Canal come together at the village of Cong to form the [[River Cong (Ireland)|River Cong]] which flows into Lough Corrib.<ref> Drew, D. P. and Daly, D., Groundwater and Karstification in Mid-Galway, South Mayo and North Clare, Geological Survey of Ireland, Report Series 93/3, Dublin, 1993. Pages 21, 22, 23.</ref>

Lough Mask is the fourth largest lake, by area, in Ireland and the sixth [[List of loughs of Ireland|largest]] lake in the island of Ireland. The eastern half of Lough Mask is shallow and contains many islands. The other half (Upper Lough Mask) is much deeper, sinking to a long trench with depths in excess of 50 metres.<ref>The Bathymetry and Origin of the Larger Lakes of Ireland Author(s): J. K. Charlesworth</ref>
Lough Mask has a mean depth of {{cvt|15|m}}, and a maximum depth of {{cvt|58|m}}.<ref>MAYO COUNTY COUNCIL TOORMAKEADY
WASTE WATER DISCHARGE Page 8 [http://www.epa.ie/licences/lic_eDMS/090151b28039ad8b.pdf]</ref> Its water volume of {{convert|1.3|km3|e6acre.ft|abbr=unit}}<ref>MAYO COUNTY COUNCIL TOO
URMAKEADY
WASTE WATER DISCHARGE Page 12 [http://www.epa.ie/licences/lic_eDMS/090151b28039ad8b.pdf]</ref> is the largest in the Republic of Ireland and the second [[List of loughs of Ireland|largest]] on the island of Ireland (after [[Lough Neagh]]).