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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A young boy who was told he would never talk has defied doctors by finding his voice, singing Olly Murs songs.
Cloudier on Monday although it will stay dry.
Turning cloudy in the east overnight. Sunny spells tomorrow.