Rivers & Lakes That Change Colours

Sharon Hill

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#31
I asked an acid mine drainage expert about opaque blue water. It happens when there is high dissolved metals in the water, such as aluminum. The fish would not die instantly. A sudden upwards change in pH would cause the water to turn this color. A spill of caustic soda would cause localized fish kill but change the water downstream as it gets diluted.
gw200910305279757ar-jpg.jpg
 

Shady

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#32
So, who are the shits responsible for it? Anybody heard anything?
 

Yithian

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#38

AnonyJoolz

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#39

AnonyJoolz

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#40
The latest from the depths of Somerset, from https://www.somersetlive.co.uk/news/somerset-news/cause-pollution-turned-river-frome-3288009


"The government organisation has found that water-based ink caused the river to change colour.

The bright shade of the Rodden Lake Stream in Frome garnered national attention last month when the investigation was initially launched.
The Environment Agency also added it was taking action against the party behind the pollution. A spokesman said the ink resulted in little environmental impact. It has also been confirmed that no fish or wildlife died.

Asked if action would be taken against the responsible party, the spokesman said: “Yes, proportional to the severity of the incident.

"They will also receive a recharge for our time investigating the incident.”

As the case is still active, the agency has not disclosed the source of the ink."


Looks like someone dumped some water-based dye in the river, maybe for larks or because they are commonsensically-challenged.
 

Yithian

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#41
On the vaguely same topic, this is completely natural:

The Red River in Cusco, Peru:


Explanation:
Having its source in the Palcoyo Rainbow Mountain, the Red River in Cusco is a treat to the eyes. The color of the water runs a pinkish red due to the iron oxides that form a large part of the region’s soil. While it remains a muddy brown through most of the year, the Red River emerges to claim its true beauty during the rainy season.

Source:
https://curlytales.com/have-you-seen-the-gorgeous-red-river-in-cusco-peru/
 

Yithian

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#42
Alternatively...

South Korean river turns red after being polluted with pigs' blood

A river near the inter-Korean border has turned red after being polluted with blood from pig carcasses.

South Korean authorities had culled 47,000 pigs in an attempt to halt the spread of African swine fever (ASF).

Heavy rains caused blood to flow from a border burial site into a tributary of the Imjin River.

African swine fever is highly contagious and incurable, with a near zero survival rate for infected pigs, but it is not dangerous to humans.

Local authorities dismissed concerns that the blood could cause the spread of African swine fever to other at-risk animals, saying the pigs had already been disinfected before being slaughtered.


Full Story Including Picture:
https://www.bbc.com/news/world-asia-50384953
 
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