Reuben Page from the Environment Agency says that the oxygen levels in the canal are now back to normal.
The oxygen levels were affected by the recent warm weather, which the Environment Agency says usually only affects still water.
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Occasional rain interspersed with drier periods. Rather warm.
Some rain tonight but largely dry.
Police are concerned for the welfare of Samantha Baldwin and her children, nine-year-old Louis Madge and six-year-old Dylan Madge