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Story: Water resources

Boulder stream

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Boulder stream

The headwaters of many of the rivers and streams that drain mountain catchments often have boulder beds – the general rule is that the closer to the headwaters you are, the larger the boulders are. This boulder-bed stream is the Iris Burn in Fiordland.

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by Carl Walrond

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How to cite this page

Mike Scarsbrook and Charles Pearson, Water resources – Rivers, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/18194/boulder-stream (accessed 24 June 2026).

Story by Mike Scarsbrook and Charles Pearson, published 1 March 2009.