Environmental Monitoring and Assessment

, Volume 182, Issue 1, pp 215-232

First online:

Limnological study on a newly built drinking water reservoir near Tirana, Albania

  • Alqiviadh ÇullajAffiliated withChemistry, Faculty of Natural Sciences, University of Tirana
  • , Sonila DukaAffiliated withChemistry, Faculty of Natural Sciences, University of Tirana
  • , Artan EmiriAffiliated withDrinking Water Treatment Plant
  • , Erlinda KoniAffiliated withInstitute of Veterinary Food Security
  • , Aleko MihoAffiliated withBiology, Faculty of Natural Sciences, University of Tirana
  • , Bledar MurtajAffiliated withUniversity Research Center of Waters, Energy and Environment, Polytechnic University of Tirana
  • , Spase ShumkaAffiliated withFaculty of Biotechnology and Food, Agricultural University of Tirana
  • , Reinhard BachofenAffiliated withInstitute of Plant Biology, University of Zürich Email author 
  • , Ferdinand SchanzAffiliated withInstitute of Plant Biology, University of Zürich
    • , Helmut BrandlAffiliated withInstitute of Evolutionary Biology and Environmental Sciences, University of Zürich

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Bovilla Lake is a reservoir constructed 12 years ago for supplying the city of Tirana (Albania) mainly with drinking water. It has a surface area of 4.6 km2, a maximum depth of originally 60 m and is monomictic with a stratification period from early spring to end of October. The lake is oligotrophic with low nutrient concentrations (e.g. SRP in spring about 8 μg L − 1) and minor oxygen depletion in the hypolimnion during thermal stagnation. The lake is highly turbid due to severe particle import by several rivers during rain periods. This led to a massive deposition of sediments, lifting the maximum depth to 45 m in 2008. Furthermore, the photic zone reached hardly more than 10 m. Algal species diversity is high; however, diatoms from the genus Cyclotella dominate most of the year both in numbers and biomass. Our study describes for the first time the hydrography and limnology of the Bovilla Reservoir.


Bovilla Reservoir Drinking water supply Turbidity Oligotrophy Suspended material Cyclotella