Biez Jean

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Biez Jean
Bief Jean
Saint-Benoît-des-Ondes on the estuary

Saint-Benoît-des-Ondes on the estuary

Data
Water code FR :  J0404000
location France , Brittany region
River system Biez Jean
source on the municipal boundary of Epiniac and Bonnemain
48 ° 27 ′ 37 ″  N , 1 ° 42 ′ 42 ″  W
Source height approx.  101  m
muzzle on the municipal boundary of Saint-Benoît-des-Ondes and Hirel in the English Channel Coordinates: 48 ° 36 ′ 59 ″  N , 1 ° 50 ′ 43 ″  W 48 ° 36 ′ 59 ″  N , 1 ° 50 ′ 43 ″  W
Mouth height approx.  5  m
Height difference approx. 96 m
Bottom slope approx. 3.2 ‰
length 30 km
Left tributaries Meleuc
Reservoirs flowed through Étang de Beaufort

The Biez Jean is a river in France that runs in the Ille-et-Vilaine department in the Brittany region . It rises near the hamlet of Ville Perdue on the municipal boundary of Epiniac and Bonnemain , generally drains in a north-westerly direction, changing its name several times ( Ruisseau du Pont-Melin , Ruisseau du Pont Atelle ) and flows after 30 kilometers at the municipal boundary of Saint-Benoît- des-Ondes and Hirel in the English Channel . In its lower reaches, it is used to add water to the Canal des Allemands , which was built as an anti-tank trench by the German troops during World War II .

history

The name of the river is derived from an homage to the Breton Duke John VI. who initiated the sewerage of the river mouth in 1420, which at that time formed a huge swampy landscape.

Places on the river

(Order in flow direction)

Individual evidence

  1. ↑ Source geoportail.gouv.fr
  2. ↑ estuary geoportail.gouv.fr
  3. ↑ a b The information on the length of the river is based on the information on the Biez Jean at SANDRE (French), accessed on November 25, 2013, rounded to full kilometers.