Dead fish on Trent and Mersey

[Derek Porteous]

A lot of dead fish this morning on The Trent and Mersey particularly in the short stretch between Barnton Tunnel and Saltersford Tunnels. Lesser numbers to the west of Saltersford.

Is this due to lower oxygen levels with the hot level or something more sinister?

I have messaged CRT but not had a reply yet.

[matty40s]

Probably more to do with sewage and slurry being washed into the canal in the storms the other day. I would inform the EA, then at least a record of it is made even though they will probably do bugger all about it.

[Moke]

Moored just below Banbury on the Oxford canal and it was full of dead fish this morning. By mid morning the EA were there aerating the water. 

[matty40s]

 

https://twitter.com/marcrileydj/status/1668575922734112769?s=20

Edited June 14, 2023 by matty40s

[Grassman]

We passed lots of dead fish yesterday on the T&M near Colwich, shortly after a section that they were dredging. There's an interesting article in this months Waterways World about dredging and how it temporarily reduces the oxygen in the water, particularly when it's done in the summer when the water is warmer.

[BilgePump]

Apparently Salford Quays has been full of dead fish the past couple of days. EA says that it's a result of low oxygen levels in the water due to the hot weather.

[robtheplod]

20 minutes ago, BilgePump said:

Apparently Salford Quays has been full of dead fish the past couple of days. EA says that it's a result of low oxygen levels in the water due to the hot weather.

Maybe they should allow increase speed limits to churn it up a bit? 

[haggis]

Apparently shortage of oxygen in water not only deprives fish of oxygen but it upsets the biological balance of the water which is what kills fish. A lot of garden ponds have suffered fish losses recently.

[Hudds Lad]

I tried reading a Twitter thread on the Salford Quays fish incident, but it just descended into rubbish about it being signs of an upcoming earthquake, chem trails, fake global warming and other rubbish.  

[matty40s]

1 hour ago, Grassman said:

We passed lots of dead fish yesterday on the T&M near Colwich, shortly after a section that they were dredging. There's an interesting article in this months Waterways World about dredging and how it temporarily reduces the oxygen in the water, particularly when it's done in the summer when the water is warmer.

Which CRT and contractors have known for years, the dredging on the Weedon -Whilton stretch was abandoned several years ago for the same reasons.....and never completed.

[ditchcrawler]

6 hours ago, Grassman said:

We passed lots of dead fish yesterday on the T&M near Colwich, shortly after a section that they were dredging. There's an interesting article in this months Waterways World about dredging and how it temporarily reduces the oxygen in the water, particularly when it's done in the summer when the water is warmer.

A major concern when dredging on the Norfolk Broads

[matty40s]

https://twitter.com/RussellB1ggs/status/1669397347854319629?s=20

 

https://twitter.com/UnderwaterMedia/status/1669285349728608256?s=20