{{short description|River in Spain}} {{Infobox river | name = Mesa River ''(Río Mesa)'' | image = Balneario de Sicilia en Jaraba.jpg | image_size = 200 | image_alt = Mesa River in Jaraba | image_caption = View of the Mesa River in [[Jaraba]] | map = Cuenca del rio Riedra.jpg | map_size = 200 | map_alt = Ebro basin | map_caption = The watershed of the Piedra within the Ebro basin | source1_location = [[Sierra de Solorio]],<br>[[Guadalajara (province)|Guadalajara Province]]<br>[[Castile-La Mancha]]| | mouth_location = [[Piedra River, Spain|Piedra River]]<br>[[La Tranquera Dam]], [[Aragón]] | subdivision_type1 = Country | subdivision_name1 = [[Spain]] | progression = Piedra - [[Jalón (river)|Jalón]]- Ebro - [[Mediterranean Sea]] | length = {{convert|54.17|km}} | source1_elevation = {{convert|1272|m|ft|abbr=on}} | mouth_elevation = {{convert|691|m|ft|abbr=on}} | mouth_coordinates = {{coord|41|14|33|N|1|48|37|W|display=inline,title}} | discharge1_avg = | basin_size = | river_system = [[Ebro]] | tributaries_left = | tributaries_right = }} The '''Mesa River''' ({{langx|es|Río Mesa}}) is a river in the [[Sierra de Solorio]] range area, [[Iberian System]], [[Spain]]. It is a tributary of the [[Piedra River, Spain|Piedra River]].
There are [[trout]] in the river, but the population of the [[endangered]] [[Austropotamobius pallipes|European freshwater crayfish]] in the river has practically disappeared owing to the introduction of the [[North America]]n [[signal crayfish]] (''Pacifastacus leniusculus'').<ref>[http://www.turismodezaragoza.es/provincia/naturaleza/rios/rio-piedra.html Río Piedra, Entorno Natural en la Provincia de Zaragoza]</ref>
==Geography== It rises near [[Selas]], in the [[Guadalajara (province)|province of Guadalajara]], [[Castile-La Mancha]]. The Mesa has an irregular flow, due to the long dry season of the summer months, with often heavy rainfall in the spring and autumn. It receives much water at [[Jaraba]], where there are [[thermal springs]].<ref>[http://www.jaraba.com/html/balnearios.html Balnearios de Jaraba] {{webarchive|url=https://web.archive.org/web/20130509194204/http://www.jaraba.com/html/balnearios.html |date=2013-05-09 }}</ref>
The Mesa River cuts a deep [[canyon]], locally known as ''Hoces del Río Mesa'' (Mesa River Gorges) or ''Valle del Mesa'' (Mesa Valley).<ref>[http://www.turismocalatayud.com/que_hacer_ficha.php?tipo=ficha&idtipo=56&idficha=70 Hoces del Río Mesa]</ref>
== See also == * [[List of rivers of Spain]]
==References== {{reflist}}
==External links== *{{commons category inline|Mesa River}}
[[Category:Rivers of Spain]] [[Category:Rivers of Castilla–La Mancha]] [[Category:Ebro basin]] [[Category:Province of Zaragoza]] [[Category:Province of Guadalajara]]