What is River Irwell?
{{Infobox river | name = River Irwell | name_native = | name_native_lang = | name_other = | name_etymology = <!---------------------- IMAGE & MAP --> | image = Irwell, Salford.jpg | image_size = | image_caption = The River Irwell at [[Salford, Greater Manchester|Salford]], looking towards [[Manchester city centre]] | map = Map of River irwell.png | map_size = | map_caption = | pushpin_map = | pushpin_map_size = | pushpin_map_caption= <!---------------------- LOCATION --> | subdivision_type1 = Country | subdivision_name1 = [[United Kingdom]] | subdivision_type2 = [[Countries of the United Kingdom|Constituent country]] | subdivision_name2 = [[England]] | subdivision_type3 = Region | subdivision_name3 = [[North West England]] | subdivision_type4 = | subdivision_name4 = | subdivision_type5 = | subdivision_name5 = <!---------------------- PHYSICAL CHARACTERISTICS --> | length = | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location= Adelphi Weir | discharge1_min = | discharge1_avg = {{convert|17.72|m3/s|cuft/s|abbr=on}} | discharge1_max = <!---------------------- BASIN FEATURES --> | source1 = Irwell Springs | source1_location = Deerplay Moor, [[Cliviger]], [[Lancashire]] | source1_coordinates= {{coord|53|44|10|N|2|11|59|W|display=inline}} | source1_elevation = {{convert|400|m|ft|-2|abbr=on}} | mouth = [[River Mersey]] | mouth_location = [[Manchester Ship Canal]], [[Salford, Greater Manchester|Salford]] | mouth_coordinates = | mouth_elevation = | progression = | river_system = | basin_size = | tributaries_left = [[River Croal|Croal]] | tributaries_right = [[River Roch|Roch]], [[River Irk|Irk]], [[River Medlock|Medlock]] | custom_label = | custom_data = | extra = }}