Mesa (river)

{{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,
Guadalajara Province
Castile-La Mancha|

| mouth_location = Piedra River
La Tranquera Dam, Aragón

| subdivision_type1 = Country

| subdivision_name1 = Spain

| progression = Piedra - 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.

There are trout in the river, but the population of the endangered European freshwater crayfish in the river has practically disappeared owing to the introduction of the North American signal crayfish (Pacifastacus leniusculus).[http://www.turismodezaragoza.es/provincia/naturaleza/rios/rio-piedra.html Río Piedra, Entorno Natural en la Provincia de Zaragoza]