Groundwater development at Lamlash and Glen Rosa, Island of Arran

In April 1982 a water well was drilled into superficial deposits to the west of Lamlash village on Arran in order to augment the existing public supply. This borehole was pump tested for a short period and had 3 a specific capacity of 23 m /day/m, a value considerably higher than for other water wells on Arran, drilled into sandstone bedrock. Details of the borehole construction are given in Ball and Harrison (Hydrogeology in Scot. 83-2) . During 1983, prior to commissioning, this borehole was vandalised, causing its abandonment. However, the results were promising enough to make worthwhile the drilling of a second borehole at the same site in September 1984, along with an exploratory borehole into superficial deposits in Glen Rosa, to the west of Bradick. This report presents details of borehole construction and pumping tests carried out in both boreholes