River Ash: water levels along the river

We have 5 gauges on the River Ash. 1 is below normal for the date and 1 above. Low and high readings are fairly evenly spread.

The gauges on this page are spread across Hertfordshire and Surrey. Reading the gauges in order shows how a rise or a dry spell travels downstream, usually over a day or more on a big river. Autumn is often a low point for rivers after the summer, until steady rain returns.

Very lowLowNormalHighVery highFloodingNo reference yet

5 gauges

River Ash: water levels along the river
Gauge	Level	Compared with normal	24 hours	Updated
Furneux PelhamRiver gauge, River Ash	0.07 m	Lowest on record	±0	29 min ago
Little HadhamRiver gauge, River Ash	0.02 m	Normal	±0	29 min ago
MardockRiver gauge, River Ash	0.11 m	Normal	±0	29 min ago
Staines AshRiver gauge, River Ash	0.10 m	Very high	±0	29 min ago
Knowle GreenRiver gauge, River Ash	0.51 m	Normal	±0	29 min ago

Gauges are listed from upstream to downstream where the agency publishes river kilometres.

About the River Ash

The River Ash is a small, shallow river in Surrey, England. Its course of 10 kilometres (6.2 mi) is just outside Greater London. Work has been carried out to re-align, clear and build up a small, Littleton head of water and create two backwaters. One backwater dates to the medieval period; the other to the 1990s. It flows as one of the six distributaries of the River Colne from the south of Staines Moor immediately south of the Staines Bypass eastwards through the rest of the borough of Spelthorne before meeting the River Thames.