Extreme rainfall increases metal pollution from abandoned mines
What is it about?
Climate change may be causing an increase in episodes of very heavy but short duration rainfall. This study looks at the effect of these events on the movement of pollutant metals from abandoned mine sites.
Why is it important?
These events tend to wash more fine spoil particles from heaps into streams and rivers where they can leach into the water over time. For areas of lead mining they also increase the concentration dissolved in the stream water. Both of these factors may affect the quality of water for both drinking water extraction and the ecosystem within the stream or river.
The following have contributed to this page: Anthony Stockdale