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Berlin Environmental Atlas

02.03 Biological Water Quality (Trophics) (Edition 2004)

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Overview

All major Berlin streams are dammed and extremely slow-flowing, with the lake-like expansions of the Spree and Havel in which showing very great detention times.

Tab.1: Key quanta of the lake-like expansions of the Spree and Havel
Body of water Area
[m²]
Max. depth
[m]
Volume
[m³]
Max. length
[m]
Max. width
[m]
Detention time
Great Glienicke Lake 667,072 11.25 4,530,633 1,512 504 > 7 years
Tegel Lake 3,957,621 15.93 26,122,984 3,211 1,697 183 days
Great Wannsee Lake 2,819,202 9.79 15,417,210 2,810 1,570 11 days
Great Müggel Lake 7,668,803 8.92 36,521,941 4,336 2,607 59 days
Dämeritz Lake 1,028,924 5.73 2,736,526 1,766 918 2 days
Seddin Lake 2,806,202 7.46 11,044,671 3,426 1,020 12 days
Zeuthen Lake 2,326,180 4.75 5,835,246 3,187 851 9 days
Tab.1: Key quanta of the lake-like expansions of the Spree and Havel

Unlike natural streams, dammed stream segments, like country lakes, are sensitive to nutrient immission. Due to the high nutrient presence in the Spree-Havel area, the water quality of the Berlin stream segments is characterized by the results of Eutrophication, and to a lesser extent by external immission of easily degradable organic substances. Therefore, a water-quality classification according to the saprobic system is not practicable for Berlin.

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