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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Burton Albion will be crowned champions of League Two at the Pirelli Stadium this afternoon after they clinched the title yesterday.
A breezy day with heavy showers, some thundery.
Rain becoming heavier and more persistent.