Environment Agency staff have spent the day dealing with an emergency at a canal in Grantham after hundreds of dead fish were discovered this morning.
It's thought they died through lack of oxygen caused by the hot weather.
Chemicals have now been added to the water to bring the oxygen levels back to normal.
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WARNING - This article includes an image of the dead animal
Stoke-on-Trent performer Robbie Willaims wins his 18th Brit award last night with the Brits Icon award.
Legislation for the first phase of the HS2 high-speed rail project is expected to pass its final hurdle on Thursday.