River Thames level downstream at Marlow Lock

This measuring station takes 2 measurements. You're viewing the downstream level. View the upstream level.

Latest at 3:00am on 19 April

Height
2.54m
Trend
Falling
State
Normal

Normal range 2.02m to 3.23m

Height in metres over the last 5 days

We take measurements more often as the risk of flooding increases.

Download data CSV (12KB)

How levels here could affect nearby areas

4.73m
Water reaches the highest level recorded at this measuring station (recorded on 10 February 2014)
4.27m
Property flooding is possible above this level. One or more flood warnings may be issued
3.23m
Low lying land flooding is possible above this level. One or more flood alerts may be issued
This is the top of the normal range
2.54m
Latest level

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