Lirou (Lez)

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Lirou
Waterfall at the Source du Lirou

Waterfall at the Source du Lirou

Data
Water code FR :  Y3200500
location France , Occitania region
River system Lez
Drain over Lez  → Mediterranean
source in the municipality of Les Matelles,
43 ° 43 ′ 59 ″  N , 3 ° 48 ′ 20 ″  E
Source height approx.  135  m
muzzle at Prades-les-Lez in the Lez coordinates: 43 ° 42 ′ 7 "  N , 3 ° 51 ′ 27"  E 43 ° 42 ′ 7 "  N , 3 ° 51 ′ 27"  E
Mouth height approx.  56  m
Height difference approx. 79 m
Bottom slope approx. 7.2 ‰
length 11 km

The Lirou is a river in France that runs in the Hérault department in the Occitanie region . It rises in the municipality of Les Matelles , first drains in an easterly direction, then turns south to southwest and flows into the Lez as a left tributary after around 11 kilometers in the municipality of Prades-les- Lez . In summer the Lirou often has no water.

geography

Source du Lirou

The Source du Lirou (Eng. Source of the Lirou) or Grotte du Lirou (Eng. Cave of Lirou) is located northwest of Les Matelles at about 135 m. The spring water flows from a bluish shimmering spring pot , at the bottom of which there is a mighty cave portal that slopes upwards. The pouring fluctuates enormously. The karst spring can dry up completely in dry times or give rise to a mighty river after long periods of rain . For a long time it was believed that the Source du Lirou was an underground overflow from the nearby Source du Lez . However, this has been proven wrong. In the spring cave there are numerous siphons that have already been crossed in several dives. The large cave portal in the limestone cliffs can only be accessed for several hundred meters when it is absolutely dry. In 1950 there was a fatal diving accident in the cave. Immediately after the source, the Lirou falls down a waterfall.

course

About 450 m below the source, the Lirou in Les Matelles takes up the 4.1 km long Déridière. This is often mistakenly viewed as the upper reaches of the Lirou. After Les Matelles the Lirou flows in an easterly direction. At the mouth of the Terrieu it assumes its direction of flow to the south. At Prades-les-Lez the Lirou flows after 10.8 km from the left and east into the only 2.5 km long Lez.

Tributaries

  • Déridière (right)
  • Ruisseau de Roucayrol (right)
  • Yorgues (left)
  • Terrieu (left)
  • Rieu Coullon (left)

Places on the river

(Order in flow direction)

Web links

Commons : Lirou  - collection of images, videos and audio files

Individual evidence

  1. ↑ Source geoportail.gouv.fr
  2. ↑ estuary geoportail.gouv.fr
  3. ↑ Water information system Service d'Administration National des Données et Référentiels sur l'Eau (French) ( information ), accessed on March 31, 2014, rounded to full kilometers
  4. ↑ a b Google Earth