Baïse

The Baïse or Grande Baïse (Occitan: Baïsa) is a French river that flows through the Hautes-Pyrénées, Gers and Lot-et-Garonne departments, in the Occitanie

Baïse
Baïse
La Baïse  (French)
Canal bridge over the river
Location
CountryFrance
Physical characteristics
Source 
 - locationPlateau de Lannemezan
Mouth 
 - locationGaronne
 - coordinates44°17′5″N 0°19′17″E / 44.28472°N 0.32139°E / 44.28472; 0.32139
Length188 km (117 mi)
Basin size2,910 km2 (1,120 sq mi)
Discharge 
 - average5 m3/s (180 cu ft/s)
Basin features
ProgressionGaronne→ Atlantic Ocean

The Baïse or Grande Baïse (Occitan: Baïsa) is a French river that flows through the Hautes-Pyrénées, Gers and Lot-et-Garonne departments, in the Occitanie and Nouvelle-Aquitaine regions.

The river's source is in the Pyrenees and is a left tributary of the Garonne river. In general, it flows from south to north.

Geography

The Baïse river has a length of 187.7 kilometres (116.6 miles) and a drainage basin with an area of 2,910 square kilometres (1,124 square miles).[1]

Its average yearly discharge is 11.70 cubic metres per second (413 cubic feet per second) at Nérac, a small town of the Lot-et-Garonne department that is at about 20 kilometres (12.4 miles) of the confluence with the Garonne river. The largest discharges are during winter and spring, with 23.00 cubic metres per second (812 cubic feet per second) in February.[2]


Average monthly discharge (m3/s) at Nérac


Course

The source of the Baïse is on the Plateau de Lannemezan, in the Capvern commune (Hautes-Pyrénées), at an altitude of about 600 metres (1,969 feet).[3]

The Baïse flows through 2 regions, 3 departments and 52 communes. Some of the communes are:

Finally, it flows into the Garonne river at Saint-Léger (Lot-et-Garonne), at 30 metres (98 feet) of altitude.[4]

Main tributaries

  • Left tributaries
    • Gélise - 92 kilometres (57 miles)[5]
  • Right tributaries
    • Baïsole - 47 kilometres (29 miles)[6]
    • Petite Baïse - 74.8 kilometres (46.5 miles)[7]
    • Auloue - 45.3 kilometres (28.1 miles)[8]

References

  1. ↑ "La Baïse (O6--0290)" (in French). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 3 March 2016. Retrieved 24 June 2014.
  2. ↑ "La Baïse à Nérac" (in French). Banque Hydro. Archived from the original on 3 March 2016. Retrieved 25 April 2017.
  3. ↑ "Source de la Baïse" (in French). Géoportail. Retrieved 24 June 2014.
  4. ↑ "Confluence de la Baïse" (in French). Géoportail. Retrieved 24 June 2014.
  5. ↑ "La Gélise (O6--0330)" (in French). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 3 March 2016. Retrieved 24 June 2014.
  6. ↑ "La Baisole (O65-0400)" (in French). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 3 March 2016. Retrieved 24 June 2014.
  7. ↑ "La Baïse (O65-0430)" (in French). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 6 June 2012. Retrieved 24 June 2014.
  8. ↑ "L'Auloue (O66-0400)" (in French). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 3 March 2016. Retrieved 24 June 2014.

Other websites

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