Kōrero: Life in fresh water

Junction of Kawarau and Clutha

Junction of Kawarau and Clutha

These two images show the town of Cromwell at the junction of the Kawarau and Clutha rivers in 1903 (top) and 2005. Built in the late 1980s, the Clyde Dam impounded the two rivers, producing Lake Dunstan in 1993. Hydroelectric schemes have altered many New Zealand river catchments. Dams remain one of the major threats to freshwater ecosystems. They obstruct the pathways of fish, and few invertebrates can cope with the fluctuations in river levels downstream (caused by releasing more water to generate more power, when demand surges in the evenings).

Te whakamahi i tēnei tūemi

Otago Daily Times

Permission of the Otago Daily Times must be obtained before any re-use of this image.

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Roger Young, 'Life in fresh water - Factors affecting life in fresh water', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/11646/junction-of-kawarau-and-clutha (accessed 28 March 2020)

He kōrero nā Roger Young, i tāngia i te 24 Sep 2007