Besaya River - Río Besaya

Besaya River
Rio Saja-Besaya en Ganzo.PNG
The Besaya river joins the waters of the Saja at the height of the town of Ganzo , within the municipality of Torrelavega .
Geographic location
Cuenca Alone-Besaya
Birth Source of the Besaya , Fresno del Río
( Campoo de Enmedio , Cantabria )
River mouth Saja River (to the Cantabrian Sea )
Coordinates 43°21′46″N 4°34′28″O / 43.3628, -4.57444Coordenadas: 43°21′46″N 4°34′28″O / 43.3628, -4.57444
Administrative location
country SpainFlag of Spain.svg Spain
Division Flag of Cantabria.svg Cantabria
Water body
Tributaries Main tributaries
Length 80 km
Basin area 465 km²
Medium flow 12,2 /s
Altitude Source: 870 masl
Mouth: 25 masl

The Besaya (from the Latin Bis - Salia ) is a river located in northern Spain , on the Cantabrian slope of the Iberian Peninsula , which runs through Cantabria . It is born in the Campoo-Los Valles region , near the town of Fresno del Río at an altitude of 870 m and flows into the Saja river in the municipality of Torrelavega, providing an annual flow of 390 hm³. [ 1 ]

Its 80 km long route is practically rectilinear in a south-north direction. It forms the valleys of Iguña and Buelna , in addition to collaborating, together with its tributary the Saja , in the formation of the plains of Torrelavega. The basin has a total area of ​​465 km² and has more than one hundred thousand inhabitants, mainly concentrated in the municipalities of Torrelavega and Los Corrales de Buelna .

The name of the river Besaya (<* V (e) is-aya) is formed, like the also Cantabrian Bisueña (<* V (e) is-on-ya), the Asturian Bisuyu / Besullo (<* V ( e) is-oy-om) and the Galicians Beseño (<* V (e) is-en-y-om), Beseña (<* V (e) is-en-ya) and Visuña (<* V (e ) is-un-ya), among others, on the root of the Paleo-European * veis-, * vis- "flow". Outside the Peninsula, the Weser and Wiesaz (Germany), the Visa (Sweden and Norway), the Vis, the Vesouze, Visance and Besançon (France), the Bisenzio in Etruria, etc.


El Besaya south of Torrelavega

Its route, 80 km long, is practically rectilinear in a south-north direction, crossing the municipalities of Campoo de Enmedio (where it was born), Santiurde de Reinosa , Pesquera , Bárcena de Pie de Concha , Molledo , Arenas de Iguña , Cieza , Los Corrales de Buelna , Cartes and finally Torrelavega , where it joins the Saja river providing an annual flow of around 390 hm³. [ N1 ]


The river has a length of 80 km until its confluence with the Saja river and an average flow at the mouth of 12.1 m³ / s.


Monthly flows of the Besaya Las Caldas Besaya
(period 1970-2000) [ 6 ]
Annual flow means Besaya passing through Torrelavega
(period 1970-2000) [ 6 ]


The Besaya basin has an area of ​​465.41 km² and forms, together with the Saja river, the largest hydrographic basin in Cantabria, the Saja-Besaya System , with a total area of ​​1048.24 km², of which 44.4% are slopes to the Besaya. The Besaya sub-basin is delimited to the east by the Mediajo Frío and Bastrucos peaks and to the west by the Bárcena Mayor mountain range and the Ibio and Mozagro peaks ; the southern limit is marked by the watershed with the Ebro river . [ 6 ]

This area includes totally or partially the municipalities of Campoo de Enmedio , Pesquera , Santiurde de Reinosa , San Miguel de Aguayo , Bárcena de Pie de Concha , Molledo , Arenas de Iguña , Anievas , Cieza , San Felices de Buelna , Los Corrales de Buelna , Cartes and Torrelavega . Compared to other basins in Cantabria, it is a densely populated area, with three municipalities with more than five thousand inhabitants (data from 2017): [ 7 ]Torrelavega (52,034 inhabitants), Los Corrales de Buelna (10,912 inhabitants) and Cartes (5742 inhabitants). This is because it is the main road connection between Cantabria and the plateau .

Main tributaries

The tributaries of the besaya, have a fairly short route due to the orography of the region and are affected by a strong dry season, which dries up some riverbeds during the summer months. Its main tributaries on the right are the Irbienza, Torina, León, Erecia and Casares rivers . On the left are the Bisueña, Llares, Cieza, Rebujas rivers and the Mortera stream among the most relevant.

The Besaya river and its tributaries
Branch Tributary name Birth Length (km) Cuenca (km²) Caudal (m³/s) Stretch
- D Hirbienza river Confluence of the streams of Hondal del Agua and Las Nieves 9 Iguña Valley
- D Torina river Alsa Torina reservoir 6,68
- D Bisueña river Vernavela field (central wisdom teeth)
- D Erecia river El Charco fountain (foothills of the Sierra del Escudo ) 11
- D Casares river Campo Collado (Anievas)
- I River of the Llares Las Suctionas (Los Llares) 12,5
- I Cieza river Cueto de Brenes 12 Cieza Valley
- I Rebujas river El Pujino (Mount Pedrazo) 7,98 Buelna Valley
- I Arroyo Mortera 7,98
- I Arroyo Chico Saint Cyprian 58 Torrelavega

See also


  1. To see the geography of the basin and course of the river Saja Viewed map sheets the following: [ 2 ] [ 3 ] [ 4 ] [ 5 ]


  1. Cantabrian Hydrographic Confederation. "Tributaries of the river Saja" . Archived from the original on October 5, 2013 . Retrieved March 1, 2014 .
  2. National Geographic Institute (1995). IGN maps, sheet 83 I Reinosa. MTN25 series .
  3. National Geographic Institute (2012). IGN maps, sheet 58 I Los Corrales de Buelna. MTN25 series .
  4. National Geographic Institute (1999). IGN maps, sheet 58 III Arenas de Iguña. MTN25 series .
  5. National Geographic Institute (1999). IGN maps, sheet 34 III Torrelavega. MTN25 series .
  6. ^ A b c Confederación Hidrográfica del Norte (1997). «Study of planning by resource exploitation systems. System 4 Saja ». North Hydrographic Plan II .
  7. INE (ed.). "Population figures referred to 01/01/2017" . Official Population Figures of Spanish Municipalities: Revision of the Municipal Register - Population as of January 1, 2017 .
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