This allows the position of the sea water interface to be managed by artificially controlling the groundwater level.

Photo: AFP The proposal would allow them to dig 3m below the groundwater level, 4m lower than the current restrictions.

There is a lot of evidence that trees will raise the groundwater levels.

That may prove useful in monitoring groundwater levels one day.

In parts of the South East, groundwater levels are lower than in the summer of 1976.

The results indicate that a significant pedological gradient occurs, which is influenced by varying seasonal groundwater levels.

In parts of south-east England groundwater levels are lower than in the infamously dry summer of 1976.

The Environment Agency says the greatest risk of flooding is in Dorset where groundwater levels are still rising.

The trucks get their supply from wells, rapidly being dug to ever deeper levels as groundwater levels plunge.

Raised groundwater levels means an increased risk of flooding as there is nowhere for the rain to drain away.

'They've got over two hundred boreholes recording groundwater levels every thirty minutes,' persisted Toshiko.

According to Pakistan Water Gateway, a non-governmental water-research portal, groundwater levels in the country are dropping by three feet annually.

In some countries, data on groundwater levels or land fertility is considered a matter of national security, to be kept secret.

Environment Secretary Caroline Spelman is hosting a drought summit as parts of England struggle with groundwater levels lower than in 1976.

The study forecast the plume would not spread very much as long as other things such as groundwater levels remained steady.

Water from the roofs of surrounding buildings drains into two smaller basins and then soaks in to top up groundwater levels.