River Health
The Upper Derwent is affected by agricultural run-off, particularly from land clearing and forestry. The Lower Derwent suffers from extremely high levels of heavy metal contamination in sediments. The State Government-backed Derwent Estuary Program points out in particular that levels of mercury, lead, zinc and cadmium exceed national guidelines. They also recommend against consuming shellfish and caution against consuming fish in general. A large proportion of the heavy metal contamination comes from major industries that discharge into the river: an electrolytic zinc smelter at Lutana established in 1917, and a paper mill at Boyer which opened in 1941.
Read more about this topic: River Derwent (Tasmania)
Famous quotes containing the words river and/or health:
“Cole Thornton: Just a minute, son.
Mississippi: I am not your son. My name is Alan Bourdillon Traherne.
Cole: Lord almighty.
Mississippi: Yeah, well, that’s why most people call me Mississippi. I was born on the river in a flatboat.”
—Leigh Brackett (1915–1978)
“To be stupid and selfish and to have good health are the three requirements for happiness, though if stupidity is lacking, the others are useless.”
—Gustave Flaubert (1821–1880)