Guadalentin
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Río Guadalentín Río Sangonera |
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 Course of the Guadalentín |
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| Data | ||
| location | Prov. Murcia ( Spain ) | |
| River system | Segura River | |
| Drain over | Río Segura → Mediterranean | |
| source |
Puentes Dam 37 ° 44 ′ 17 ″ N , 1 ° 49 ′ 55 ″ W. |
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| muzzle |
Beniaján and Huerta de Murcia in the Río Segura coordinates: 37 ° 59 ′ 30 " N , 1 ° 4 ′ 22" W 37 ° 59 ′ 30 " N , 1 ° 4 ′ 22" W |
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| Mouth height |
0 msnm
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| length | 121 km (from GIS) | |
| Drain |
MQ |
100 l / s |
| Left tributaries | Rambla de Chirivel , Rio Turrilla , Rio Luchena | |
| Reservoirs flowed through | Dam of Puentes , Pantano de Valdeinfierno , Embalse del Cenajo | |
| Big cities | Murcia | |
| Medium-sized cities | Lorca | |
| Small towns | Alhama de Murcia | |
| Communities | Librilla | |
.JPG) Río Guadalentín tamed in the Reguerón Canal |
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The Río Guadalentín ( Arabic Oued al Iznain = "the second river" or Oued al Lentin = "river of the mud", also known as Río Sangonera ) is a river in southeastern Spain that runs through the Murcia region and part of its catchment area the province of Almería includes. It is the largest right tributary of the Río Segura and is considered one of the wildest rivers on the Iberian Peninsula .
course
Several source rivers of the Río Guadalentín have their source in the Sierra de María (Almería). Among its tributaries are the Rambla de Chirivel and the Puentes marshland in the Murcia region , which is dammed by the Puentes dam. The rivers Rio Turrilla and Rio Luchena come from the same marshland . From this marshland it flows from there to the southeast to Lorca , where the Guadalentín Valley widens, which was created in this section by a tectonic rift. After Lorca it changes its course to the northeast. There it receives further inflow from the Rambla de Nogalte , which flows past Puerto Lumbreras , then passes the towns of Totana , Alhama de Murcia and Librilla to occasionally take in the water from the various Ramblas . In the Paretón district of Totana begins a canal, the Rambla de las Moreras (also known as Rambla de Lorca ), which drains water towards the coast towards Mazarrón during floods and thus withdraws water from the river on its lower reaches to the Río Segura, all the more acute To minimize the risk of flooding.
It flows into the Río Segura in the Huerta de Murcia in the municipality of the city of Murcia , in the suburb of Beniaján . The estuary is an artificial canal called the Reguerón Canal , a unique technical structure of the 18th century designed by Sebastian Feringa , military engineer and director of the Arsenal de Cartagena works , to prevent flooding, as the original confluence upstream from the city Murcia. In the province of Alicante there is another, similarly important canal, Reguerón Viejo , which diverts downstream waters of the Guadalentin during the rainy season, thus avoiding flooding when the Rio Segura floods, with direct effects on the population of Beniel and Orihuela .
Floods
The water level of the Guadalentin is very variable. After an extreme drought, large tidal waves can occur in just a few hours. It is not for nothing that it is known as "the wildest river in Europe." The weirs in the marshes of Lorca, Puentes and Valdeinfierno lead to its constant regulation and control, with the dammed water being used for irrigation.
As a result of heavy or prolonged rainfall, before the regulations and in some cases even today, the valley of the Guadalentín regularly experienced spectacular floods, which lead to great damage in its valley. Historical floods of this river were:
- On October 15, 1879, the flood of Santa Teresa, when about 600 mm of rain fell within an hour on the upper reaches of the Guadalentín. A tidal wave of 1,510 m³ / s broke through Lorca and caused 13 deaths.
- In September 1891 there was a flood known as the San Jacinto Flood, which was even higher than the previous flood, but thanks to the dam at Puentes, Lorca and the region were spared a new catastrophe.
- In June 1900 the flood of San Aniceto crossed the banks of the Santa Teresa and flooded the San Cristobal district of Lorca.
- In October 1948, on the Murcia bridge on the road to Granada, a water flow rate of over 800 m³ / s was estimated .
- October 9, 1973 saw the worst floods of the century after more than 300 mm of rainfall in the north of Almería. The river reached a flood of 2500 m³ / s in Lorca and its tributary, the Rambla de Nogalte , 1974 m³ / s through Puerto Lumbreras, where many casualties were reported. (See Riada of October 19, 1973)
- On September 28, 2012, a storm caused by a drop of cold air a tidal wave in the entire basin, innumerable damage in the municipal areas of Lorca and Puerto Lumbreras, which also caused deaths. At the dam of Puentes the record of a tidal wave of 1,870 m³ / s was reached, the water rose from 5,125,000 m³ to 13,318,000 m³ in just a few hours. The Guadalentín flowed through the city of Lorca at 616 m³ / s and 2.26 m water level, which is the maximum limit that the urban section can absorb. Downstream it rose at Paretón de Totana to 1,082 m³ / s and 6.27 m water level, and in Murcia , at the measuring point Salabosque , the peak of the tide was reduced to only 58 m³ / s and 3.48 m, as 924 m³ / s be diverted towards the sea through the Rambla de las Moreras and the dam of Jose Bautista was able to withstand the tidal wave at Librilla.
Currently, the risk of flooding in the Guadalentín has been minimized by an alternative channel that diverts the water from the Paretón dam in Totana into the Mediterranean through the Rambla de Las Moreras . This resulted in a drastic reduction in the flow, for example in the last flood in 2012. The artificial Reguerón Canal can also be used to contain floods in its lower reaches from Sangonera la Verde to Beniaján. Another canal, called Reguerón Viejo , which receives part of its inflow from the Segura region below Orihuela, is within the municipal boundaries of Bigastro; its effectiveness was confirmed during the floods of September 1989 and 2012.
Web links
Individual evidence
- ^ Región de Murcia Digital: El valle del Guadalentín. El río más salvaje de Europa ( Spanish ) Retrieved June 23, 2011.
- ↑ Confederación Hidrográfica del Segura: Embalse de Puentes. Antecedents. Riadas ( Spanish ) Retrieved June 23, 2011.
- ↑ "The flood defense infrastructures Water Association of Segura, to manage , to the basins of the rivers Segura and Guadalentín a catastrophic flood to avoid"; 29th September 2012
- ^ Diario La Verdad " It was the greatest storm in history"; 2012/02/10.
- ↑ http://www.chsegura.es/export/descargas/cuenca/infraestructuras/seprem/docsdescarga/Seprem_Rafael_Belchi.pdf