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Pupu Springs - The main spring system


Te Waikoropupu Springs also known as the Pupu Springs, it is the largest, clearest of New Zealand's freshwater springs. The basin containing the main spring is 42 metres across, and through a system of mirrors scientists have recorded the horizontal visibility at 62 metres (203 feet) a world record - the springs are considered to be the clearest fresh water in the world.

- The only place known to have greater clarity is under the Ross Sea Ice Shelf in Antarctica

- 14000 litres of water per second is discharged on average.

- The water stays underground between 2-10 years before being forced out.
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Comments on this photo:

Oct 31 2007 10:12 GMT caferr
well done...
Nov 01 2007 02:04 GMT Londi PRO
Very interesting!!!!
Nov 01 2007 02:08 GMT Midworlder PRO
Apparently that is 40 bathtubs per second :-))
Nov 01 2007 02:12 GMT Londi PRO
I'm glad you put it that way! I'm ashamed to admit I've not learned the metric system :)))

Curious what the temp of the water is..
Nov 01 2007 02:27 GMT Midworlder PRO
From a Dive site

"The temperature does not vary from a chilling 11.7 degrees Celsius. This cooling effect is activated by the filtering underground, taking an average of three to four years before reaching the springs"