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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Cold, with some wintry showers at first, but with any snow becoming confined to the hills.
A few remaining scattered snow showers during the evening, with clear, dry periods in between.
A roadside recovery worker who was hit by a lorry as he was working on a vehicle on the M6 says he is lucky to be alive.