Coeur d'Alene Lake health shows some improvements but by ‘no means out of the woods'
While Lake Coeur d'Alene remains deeply polluted – the legacy of a century of silver and gold mining – a broad review of lake-health data showed de...
While Lake Coeur d'Alene remains deeply polluted – the legacy of a century of silver and gold mining – a broad review of lake-health data showed decreases in toxins entering the North Idaho lake. In particular, the level of phosphorous entering the lake – a chemical associated with plant growth – has decreased in the past decade. So have levels of heavy metals, according to a National Academy of Sciences review of 30 years of data. Those findings were presented at the annual Our Gem Symposium, Tuesday in Coeur d'Alene.