Blue Lake New Zealand

Rotomairewhenua / Blue Lake is a small lake in Nelson Lakes National Park, in the northern reaches of New Zealand's Southern Alps. Sacred to local Māori, it has the clearest natural fresh water in the world.
  • Location: Tasman Region, South Island
  • Primary inflows: springs
  • Primary outflows: West Branch of the Sabine River
  • Basin countries: New Zealand
  • Surface area: 2.45 ha (6.1 acres)
  • Average depth: 7 m (23 ft)
  • Max. depth: 8.5 m (28 ft)
Data from: en.wikipedia.org