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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Legendary entertainer Sir Bruce Forsyth has died at the age of 89. Here is a Midlands tribute to Brucie from ITV News Central.