Educate logo-RGB_AZ.jpg

postgraduate programme in Water Resources and Environmental Management

LARGE DAM DATABASE

 IN GREECE

HOME

CONTACT US

USEFUL LINKS

GREEK WEB-PAGE FOR DAMS

 

 

ACHELOUS DAMS

 

 

See Achelous river dams in Google maps:

http://maps.google.com/maps/ms?t=k&hl=en&ie=UTF8&msa=0&msid=105123578480716502688.000478a932c627fe6b9e0&ll=39.00211,21.626587&spn=1.792897,3.521118&z=8

 

 

MESOCHORA DAM

 

From the decade of 60s the Public Power Corporation (PPC-ΔΕΗ), was seeking for a place to settle a hydroelectricity plant. PPC had chosen the location “Logga Romosiou” where the two mountains converge. The investigations begun after 1970 but the artificial lake that was created covered the town of Mesochora which was not foreseen. Thus the idea for a small hydroelectricity plant was evolved to a large reservoir of 150 m in the context of the biggest artificial work in history of Greece, the Achelous diversion.   

General information

 

Location: Trikala prefecture

Dam type: Concrete Faced Rockfill (CFRD)

Dam Height: 150 m

Crest Length: 340 m

Dam Volume: 5 x106 m3

Reservoir capacity: 358 x106 m3

Reservoir surface: 7.8 x106 m2

Use: H (Hydropower)

Power: 160 MW

Energy: 372 GWh/yr

Owner: Public Power Corporation (PPC)

Year of operation: 1995

 

 

SYKIA DAM               

 

Sykia’s dam is part of the complex artificial work of Achelous river diversion. The dam works has not been completed. The works for Achelous diversion are suspended temporarily by decision of Supreme Administrative Court. The works has been suspended three times until now (1994, 2000 and 2005). The Court will decide again after the answers upon questions that have posed to The Court of Justice of European Union. The Achelous diversion has been probably the most controversial artificial work in history of Greece.

General information

 

Location: Trikala, Karditsa and Arta prefectures

Dam type: Earthfill (TE)

Dam Height: 170 m

Crest Length: 397 m

Dam Volume: 12.4 x106 m3

Reservoir capacity: 502 x106 m3

Reservoir surface: 12.8 x106 m2

Use: HI (Hydropower, Irrigation, Achelous Diversion)

Power: 160 MW

Installed Power: 126.5  MW

Owner: Hellenic Ministry for the Environment, Physical Planning & Public Works

Beginning of construction: 1996 (temporarily stopped)

 

KREMASTA DAM

 

The dam of Kremasta is located 3 klm away from the join point of river Tavropos and Agrafioti with river Achelous. Geographically the artificial lake belong to the prefectures of Evritania and Aitoloakarnanias while the hydroelectricity works (dam, station, village etc) belongs to Aitoloakarnania. The drainage basin is 3,750 km2

 

General information

 

Location: Evritania & Aitoloakarnania prefectures

Dam type: earthfill (TE)

Dam Height: 165 m

Crest Length: 456 m

Dam Volume: 8.1 x106 m3

Reservoir capacity: 3,800 x106 m3

Reservoir surface: 80,6 x106 m2

Use: H (Hydropower)

Power: 437.2 MW

Energy: 848 GWh/yr

Owner: Public Power Corporation (PPC)

Year of operation: 1965

 

 

KASTRAKI DAM

 

§         BROCHURE

§         VIDEO 

 

 

The hydroelectricity plant of Kastraki is located 35 km at the downriver of the dam of Kremasta and north of Agrinio town. Its purpose is energy production, water supply and irrigation of the Agrinio area. The drainage basin of the reservoir is 4,118 km2.

 

 

 

 

General information

 

Location: Aitoloakarnania prefecture

Dam type: earthfill (TE)

Dam Height: 96 m

Crest Length: 547 m

Dam Volume: 5.2 x106 m3

Reservoir capacity: 785 x106 m3

Reservoir surface: 24 x106 m2

Use: HSI (Hydropower, Water Supply, Irrigation)

Power: 320 MW

Energy: 598 GWh/yr

Owner: Public Power Corporation (PPC)

Year of operation: 1969

STRATOS DAM

 

§         BROCHURE

§         VIDEO

The Stratos Hydroelectric Dam (Greek: Υδροηλεκτρικό φράγμα του Στράτου Ydroilektriko fragma tou Stratou) is a dam that dams up the Acheloos River just east of Stratos and north of the GR-5/E55 (Antirrio - Amfilochia - Ioannina). The dam was first constructed in 1989 and created the Stratos artificial lake, the fourth of the lakes in the Acheloos projects after the Kastraki and Kremasta lakes. The dam is used for hydroelectricity production and irrigation as well.  In the dam contains two units of electrical production which powers up to 150 MW of electricity (STRATOS I and STRATOS II). The drainage basin of Stratos is 4,320 km2.

 

General information

 

Location: Aitoloakarnania prefecture

Dam type: earthfill (TE)

Dam Height: 26 m

Crest Length: 1900 m

Dam Volume: 2.8 x106 m3

Reservoir capacity: 11 x106 m3

Reservoir surface: 8.4 x106 m2

Use: HI (Hydropower, Irrigation)

Irrigated area: 400,000

Power: 150 MW

Energy: 237 GWh/yr

Owner: Public Power Corporation (PPC)

Year of operation: 1989

 

 

 

 

 

Acheloos River Diversion Scheme

(short review)

 

The partial Achelous river diversion is a complex a technical work that has its origin 30 years ago. The initial design of the work included the following part works:

 

·         Two dams with the commensurate reservoirs and hydroelectricity stations in Mesochora and Sykia locations

·         Diversion tunnel of Achelous dam towards Thessaly valley, 17.5 klm long. The total amount of water was estimated to 1,100 million cubic meters annually.

·         Open air hydroelectricity station in Pefkofyto region, located at the tunnel’s outlet

·         Two dams with the commensurate reservoirs, connection tunnel at Pyli location in Trikala prefecture and in Mouzaki location in Karditsa prefecture and hydroelectricity station at Mouzaki

·         Regulation tank at Mavromati region and hydroelectricity station at the same region

 

For these works have been contacted three environmental impact assessment studies, have been given two approval decisions for environmental terms. The Supreme Administrative Court has cancelled these two approval decisions. After that the Ministry of Environment has contacted new integrated environmental impact assessment in 1995. By this study the initial design was altered. More specific: 1.  The total amount of water to be diverted was minimized to 600 million cubic meters annually 2. The diversion scheme altered. Thus the party works are:

 

·       The Sykia dam and the homonymous hydroelectricity station

·       The diversion tunnel 17.5 klm long

·       The hydroelectricity station Pefkofyto in diversion tunnel’s outlet.

·       A regulation work in Mavromati

 

 

 

Picture 1. Sykia Dam, major project element of Achelous River Diversion (source: http://www.pigesartas.gr/?id=24  )

 

 

 

Achelous River Diversion Scheme, Greece

 

Key Data

 

Estimated water transfer

600 million m³

Project elements

 

Mesochora

Mega dam (150m) and reservoir

 

MesochoraGlystra tunnel (7.5km)

Sykia

Mega dam (150m) and reservoir

 

Sykia diversion channel to Thessaly (17.4km)

Mouzaki

Major dam (135m) and reservoir

Pyli

Dam (90m) and reservoir

Original funding estimate

€450m

National budget contribution

€207m

Estimated construction costs

€720m

Estimated total project cost

€3–4.5bn (1996)

Area to be irrigated

240,000ha to 380,000ha

Project Timeline

 

First suggested

1930

Adopted

1984

Cost benefit study commissioned

1988

EU funding applications

1990

Opposition campaign launched

1992

EU rejects funding application

1993

First restraining order issued

1994

Bern Committee formal complaint

1995

Greek ministerial approval of EIA

1995

Tunnel contract awarded

1997

Second restraining order issued

1999

Ministerial approval ruled illegal

2000

National budget allocation announced

2001

Resumption of construction

2003

Construction suspended

2004

Parliament pass legal amendments to allow work to proceed

19 July 2006

The Supreme Administrative Court poses 14 questions to The Court of Justice of European Union regarding the legality of diversion scheme

9 October 2009

Achelous Diversion works are temporarily suspended until The Court of Justice of European Union answer the questions

10 February 2010

Key Players

 

Client / sponsor

Ministry of Environment, Regional Planning and Public Works, Greece

HEP operator

DEH - Greek Public Power Corporation

Main contractor (diversion tunnel)

Impregilo-Gnomon-Tegk consortium

Financial consultants to Greek Government (cost benefit analysis)

Morgan Grenfell

Financial consultants to European Union (funding application)

Coopers & Lybrand

Engineering, installation and commissioning (Sykia and Pefkofyto HEP plants)

Prometheus Gas SA (in consortium with German and Russian supplier companies)

Other contractors

Itia, Kalaouzis, Electrowatt, Marinos, Koutsoyiannis

Environmental NGOs

WWF Greece, Hellenic Ornithological Society, Elliniki Etairia , Hellenic Society for the Protection of Nature WWF Germany, WWF UK, Greenpeace, Birdlife International, RSPB, European Environmental Bureau, Ornitologisk Forening (Denmark)

 

Sources & related websites:

 

1.     http://www.geoengineer.org/kastraki1.html

2.     http://en.wikipedia.org/wiki/Stratos_Hydroelectric_Dam

3.     http://www.itia.ntua.gr/~nikos/arx_int/CDfrag/reservoirs/stratos_main.htm

4.     http://wikimapia.org/#lat=39.4642445&lon=21.3030267&z=16&l=0&m=s&v=9

5.     http://www.water-technology.net/projects/acheloos/

6.     http://www.skai.gr/player/tv/?mmid=105389 (9/10/2009 – “The Supreme Administrative Court has posed 14 questions to The Court of Justice of European Union”, from skai tv)

7.     http://www.skai.gr/player/tv/?mmid=109548 (10/2/2010 – “Achelous Diversion works are temporarily suspended”, from skai tv)

8.     Koutsoyiannis, D., Study of the operation of reservoirs , General outline of the Acheloos River diversion project, Contractor: Directorate for Acheloos Diversion Works – General Secretariat of Public Works – Ministry of Environment, Planning and Public Works, Collaborators: G. Kalaouzis, ELECTROWATT, P. Marinos, D. Koutsoyiannis, 420 pages, 1996 (http://www.itia.ntua.gr/en/docinfo/214/ )

9.     THE RIVER ACHELOOS DIVERSION SCHEME, Kimon Hadjibiros, Assistant Professor, National Technical University of Athens (http://www.itia.ntua.gr/~kimon/ACHELOOS_KH.doc )