The Thames Barrier is due to reopen at 6pm after high tides earlier on.
But flooding is still causing problems for people in and around the capital.
In Sunbury-on-Thames, Surrey, children's parks and river paths are underwater.
Also, some trains coming into London are delayed due to two land slips in southern England.
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The latest disruption on an increasingly delay-affected Underground system was on the Central line.
Senior Labour candidate and London Mayor contender David Lammy has admitted to ITV News that a post election deal with the SNP is possible
With the deadline for voting approaching at midnight tonight, here is how to make sure you don't miss out.