The Environment Agency says oxygen levels in Grantham Canal have now returned to normal after the deaths of hundreds of fish.
They were first called to the waterway yesterday and found oxygen levels at around 20%. Since then they have been pumping chemicals into the water to increase the oxygen concentration.
Test have now showed that the oxygen has returned to its normal level. It is believed the recent hot weather, leading to an increase in weed growth, had caused the drop.
More top news
The Mayor of London is due to make an appearance in the Birmingham-based comic show.
Mostly dry with variable cloud, rather chilly.
Mostly dry and bright. Some patchy rain in the south.