Longest quarry lakes

As of 2026-10-12, Cospudener See tops the list with 4,000 m.

1. #1 Cospudener See — 4,000 m

   Artificial lake near Leipzig, Germany

   source Wikidata
2. #2 Alperstedter See — 1,400 m

   lake in Germany

   source Wikidata
3. #3 Großer Hemminger Teich — 1,100 m

   lake in Hemmingen, Germany

   source Wikidata
4. #4 Heiligenwaldsee — 830 m

   lake in Germany

   source Wikidata
5. #5 Badesee Tannenhausen — 800 m source Wikidata
6. #6 Vienenburger See — 800 m

   lake in Germany

   source Wikidata
7. #7 Kiessee in Göttingen — 749 m source Wikidata
8. #8 Hasselkampsee — 740 m

   lake in Landkreis Peine, Germany

   source Wikidata
9. #9 Fürstenberg-Maar — 640 m

   artificial lake in Frechen, Germany

   source Wikidata
10. #10 Klyuchevskoi Karyer — 580 m

    flooded quarry in Petrozavodsk, Russia

    source Wikidata