Ashton Farm

Location of Ashton Farm

The well measures water levels in the Chalk aquifer. The well lies to the south of a north-west–south-east trending fault.

Our enquiries service can help you to access groundwater level data for this well.


Our groundwater level records for Ashton Farm start in 1974.


Show data from :-
1974 to 2015 1970s 1980s 1990s 2000s 2010s

Information about the well

Ashton Farm
Wellmaster ID SY68/34
NGR 3661 0880
Datum 72.16 m AOD
Monitoring details
Type Groundwater Level
Aquifer Chalk
Confinement Unconfined
Depth 11.7 m
Monitored by EA South West
Records commence 1974
Records end Active

Hydrogeological setting

This well monitors water levels in the Chalk of Wessex. Geological map of the area around Ashton Farm (click for key)

It is dug into the Lewes Nodular Chalk Formation. The site lies on the south side of the west-north-west–east-south-east trending Winterbourne Abbas Fault with a downthrow to the north-north-east of 20 m.

Well or borehole construction

It is a brick lined well, 1.4 metres in diameter. It was originally sunk for a farm water supply.

Hydrograph response

The hydrograph has an annual sinusoidal appearance, with some response to intense winter rainfall events. Its response is rapid for a chalk well, presumably because of its shallow depth. It appears to have an unconstrained response, although levels tend to peak close to 71 m AOD, and have only been lower than 64 metres on rare occasions.


A preliminary risk assessment of the potential for groundwater flooding during the winter of 2007/8 — an update.

Topographic map with hillshade of the area around Ashton Farm


Contact Andrew McKenzie for further information