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River Allen level at Idless Dam

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How levels here could affect nearby areas

2.41m
Property flooding is possible above this level
1.25m
Water reaches the highest level recorded at this measuring station (7 December 2000)
1.10m
Top of normal range. Low-lying land flooding possible above this level. One or more flood alerts may be issued.

Flooding might not happen again at the same historical levels. This may be because flood management schemes are now in place.

How we measure river, sea and groundwater levels