Grimes Graves

The well at Grimes Graves is used to measure water levels in the unconfined Chalk aquifer to the north-west of Thetford, Norfolk.

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


Records for this site end in 2008.


Show data from :-
1971 to 2008 1970s 1980s 1990s 2000s

Information about the well

Grimes Graves
Wellmaster ID TL89/37
NGR 5817 2900
Datum 17.22 m AOD
Monitoring details
Type Groundwater Level
Aquifer Chalk
Confinement Unconfined
Depth 26 m
Monitored by EA Anglian
Records commence 1971
Records end 2008

Hydrogeological setting

The site lies on the margin of the cover sand and a very small thickness of this deposit may be present above the Chalk. The borehole penetrates the New Pit Chalk Formation. The Chalk aquifer is unconfined at this site.

Well or borehole construction

The borehole was drilled at 120 mm diameter. It is not recorded as having any casing, though there is likely to be at least a short section at the surface.

Hydrograph response

Unconfined Chalk with hydrograph exhibiting an annual sinusoidal response.


Contact Andrew McKenzie for further information