River Thames level downstream at St Johns Lock

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

Latest at 3:45pm on 20 June

Height
1.50m
Trend
Steady
State
Normal

Normal range 1.39m to 2.21m

Height in metres over the last 5 days

Download data CSV (12KB)

How levels here could affect nearby areas

3.00m
Water reaches the highest level recorded at this measuring station (recorded on 22 July 2007)
2.85m
Property flooding is possible above this level. One or more flood warnings may be issued
2.21m
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
1.50m
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