This well is used to monitor water levels in the confined Inferior Oolite aquifer to the west of Malmesbury, Gloucestershire.
Our enquiries service can help you to access groundwater level data for this well.
|Datum||113.8 m AOD|
|Aquifer||Inferior Oolite Group|
|Monitored by||EA South East|
The borehole is located near the outcrop of the junction of the Forest Marble and Chalfield Oolite formations, both part of the overlying 'Great Oolite' aquifer. Beneath this the borehole penetrates the Fuller's Earth Formation, the Inferior Oolite Group and about 5.5 m of the Bridport Sand Formation.
The Inferior Oolite aquifer is confined by clays within the Fuller's Earth Formation. The underlying Bridport Sand Formation has a high storage coefficient and is generally in hydraulic continuity with the Inferior Oolite Group limestones.
The borehole has a diameter of 101 mm to 85 m depth, below which it narrows to 86 mm. It has 51 mm casing to 80 m depth.
The hydrograph shows a smooth sinusoidal pattern. The water level exhibits large seasonal fluctuations but always remains above the base of the confining beds. The maximum water level appears to be constrained.
Contact Andrew McKenzie for further information