Brook Levels

The Pillhill Brook Association are curious to find out how groundwater level affects the depth of the brook throughout the year. With PBA volunteers recording water depth at 9 locations along the brook and groundwater level in a number of boreholes in the north of the catchment we can start to create a flow map of the brook.

Play the slide presentation below to see how brook flow has changed over the summer. 

First watch the top left hand corner of the slide presentation as the blue line (showing the course of the Pillhill Brook) slowly turn red as the brook dried over several months from Kimpton southwards and Thruxton eastwards. 

Then watch as the dry watercourse slowly returns to blue as it reactivates.

The Environment Agency use groundwater levels at Clanville Gate and Kimpton High View boreholes to help them assess flood or drought risk in our area. So the table in the top left hand corner of the map shows how groundwater levels at these boreholes has changed as the brook ceases to flow. 

As of 31 December 2025 the Pillhill Brook is flowing from just north of Stanbury Road bridge in Fyfield. The Fyfield and Thruxton winterbournes and the leat in Amport Fen are now flowing freely. The very top of the brook has yet to reactivate.