This week, a significant number of dead fish were discovered in the river in Cambridge.
In the section of the Cam between Elizabeth Bridge and Ditton Meadows, locals reported seeing a lot of dead fish.
One resident described the scene as "grim, even apocalyptic.".
Low levels of dissolved oxygen in the water have been proposed as a potential cause by the Environment Agency (EA) and Anglian Water.
In the section of the river close to Ditton Meadows, many dead fish were discovered.
The city resident Simone Chalkley was strolling along the bank when she noticed "maybe 100" dead fish.
The whole way along the edge, she said, "there were a lot -- some single, large, others in batches of 10s and 20s.".
Ms. Chalkley, a resident of Cambridge for 31 years, claimed to have never witnessed as many dead fish at once.
I take a weekly, and occasionally more than weekly, walk by the river, she continued.
"I have never witnessed anything on this scale; the most I have ever witnessed is one or two dead fish at a time.
It was depressing, even apocalyptic. ".
Ms. Chalkley claimed that she informed the EA of the problem right away.
Low oxygen levels in the water, according to the Environment Agency, were the problem.
A representative for the EA thanked people for reporting the dead fish and urged them to do so in the future.
They stated: "Specialist fisheries officers examined the river, where it is believed that the fish deaths were caused by low dissolved oxygen levels following significant rainfall rather than pollution. ".
A spokesperson for Anglian Water confirmed that they joined the EA for the inspection at Ditton Meadows.
They declared: "We can both confirm that the problem that led to the fish's demise is in no way connected to Anglian Water.
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