Studen Kladenets
Encyclopedia
The Studen Kladenets Reservoir (язовир „Студен кладенец“) is the second largest reservoir in Bulgaria
Bulgaria
Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

. It is situated on the river Arda, and is created behind the Studen Kladenets dam, 30 km south-east of the town of Kardzhali. There are another two dams of the Arda - Kardzhali Dam
Kardzhali Dam
The Kardzhali Reservoir is located near Kardzhali town in Kardzhali Province, Bulgaria.The reservoir was recently seeded artificially with European perch. The fish was taken from the Ovcharitsa reservoir....

 to the west (upstream) and Ivaylovgrad Dam
Ivaylovgrad Dam
The Ivaylovgrad Dam is located in the eastern Rhodope Mountains and is situated on the Arda river, Southern Bulgaria. There are another two large dams of the Arda upstream - Kardzhali Dam and Studen Kladenets Dam to the west of Ivaylovgrad Dam.The reservoir has a total volume of and a drainage...

 to the east (downstream).

The reservoir has a total volume of 489 million m3 and a drainage basin
Drainage basin
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 of 3,706 km² and is 29 km long. It is situated at an average 227 m above sea level, its dam being 338 m long and 67.5 m high. The top of the dam consists of nine spillways, each one being 10.5 by 5 m.
"Studen Kladenets" Hydroelectric Power Plant is situated appr. 1 km downstream of the dam. The HPP has four Francis-type turbines
Francis turbine
The Francis turbine is a type of water turbine that was developed by James B. Francis in Lowell, Massachusetts. It is an inward-flow reaction turbine that combines radial and axial flow concepts....

, 15 MW each. There is undergoing project for reconstruction and upgrading the HPP with another 16 MW turbine and a smaller eco-turbine and after the completion of the project the total output will reach 85 MW with annual production of 165 GWh of electricity.

Studen Kladenets reservoir is an attractive place for fishermen
Fishing
Fishing is the activity of trying to catch wild fish. Fish are normally caught in the wild. Techniques for catching fish include hand gathering, spearing, netting, angling and trapping....

, where rudd
Rudd
The common rudd Scardinius erythropthalmus is a bentho-pelagic freshwater fish, widely spread in Europe and middle Asia, around the basins of the North, Baltic, Black, Caspian and Aral seas.-Artificially introduced:...

 is caught in great numbers. Studen Kladenets is Bulgarian
Bulgarian language
Bulgarian is an Indo-European language, a member of the Slavic linguistic group.Bulgarian, along with the closely related Macedonian language, demonstrates several linguistic characteristics that set it apart from all other Slavic languages such as the elimination of case declension, the...

for "a cold well".

History

The initial plans for the construction of a dam on the Arda date to as early as 1948. Construction began in 1955 and was completed in 1957. The HPP started production in 1958.
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