|Data on the structure|
|Height of the barrier structure :||165 m|
|Building volume:||8.17 million m³|
|Crown length:||465 m|
|Power plant output:||437 MW|
|Data on the reservoir|
|Water surface||92 km²|
|Storage space||4700 million m³|
The Kremasta Reservoir ( Greek τεχνητή λίμνη Κρεμαστών , pronounced Techniti limni Kremaston ; simplified Λίμνη Κρεμαστών) is the largest reservoir in Greece . The reservoir is located in western Greece and lies in both the Evrytania Prefecture and the Aetolia-Acarnania Prefecture . Commissioning took place in 1969.
The Kremasta reservoir is fed by four tributaries: the main tributary is the Acheloos river , the three secondary tributaries are the Tavropos , Agrafiotis and Trikeriotis rivers . The area covers 92 km², the maximum storage volume is 4,700,000,000 m³ and the maximum water depth is 51.6 m. The reservoir is based on the natural course of the Acheloos and its tributaries in the valleys of the southern Pindos Mountains, which gives the reservoir a fjord-like appearance. The dam of the Kremasta reservoir is 165 m high and 465 m long, making it one of the largest dams in the world .
The reservoir or its foothills are spanned by 2 larger bridges: the Episkopi Bridge (named after the sunken monastery), which also marks the border between the prefectures of Evrytania and Etolia-Acarnania, and the Tatarna Bridge (named after the nearby monastery Tatarna). Via the latter, the national road 38 ( European route 952 ) leads from Agrinio (west) to Karpenissi and then to Lamia (east). It is a very important east-west connection between the Greek regions of West Greece (Etolia-Acarnania) and Central Greece (Evrytania, Lamia).
Due to the damming of the Kremasta reservoir, the following geographical points and structures or buildings were flooded:
- the Mardacha spring, which was the only one that fed the Acheloos in the summer months,
- the Episkopi monastery from Byzantine times (near the Episkopi bridge),
- the Manoli Bridge from 1659, which connected the two banks of the Agrafiotis River for 400 years (see picture on the right),
- the old one-arch bridge Tatarna and
- the villages of Agios Vassilios and Sidera Trichonidas.
A special feature is the old one-arch bridge Manoli, which is almost completely flooded by the lake when it is full. In the months with low water, the bridge emerges completely from the lake, surrounded by a mud desert (see photo).
The region around the Kremasta reservoir is subject to the protection provisions of the Natura 2000 program.
In addition to generating energy, the Kremasta reservoir is also used for water sports (canoeing and kayaking).
While the reservoir was being completed, a major earthquake with a magnitude of 6.2 on the Richter scale occurred on February 5, 1966 at 02:01 am local time ; the dam under construction was not damaged. There are indications that the earthquake was triggered by the damming up of the lake and the associated higher pressure on the rock layers below the lake. ( Induced Seismicity )
- Papadimitriou, Eleftheria E .; Karakostas, Vasilios G .: Episodic occurrence of strong (Mw≥6.2) earthquakes in Thessalia area (centeral Greece). Earth and Planetary Science Letters. Volume 215. 2003. pp. 395-409. P. 398
- Papadimitriou, Eleftheria E .; Karakostas, Vasilios G .: Episodic occurrence of strong (Mw≥6.2) earthquakes in Thessalia area (centeral Greece). Earth and Planetary Science Letters. Volume 215. 2003. pp. 395-409. P. 406