Breadcrumb Home Video The main stages in drilling a borehole Video The main stages in drilling a borehole Share Drilling of a borehole in Issoudun so as to be able to constantly measure the level of the Berry water table. 15 June 2015 Groundwater and resource preservation Centre-Val de Loire Discovering the Earth Sciences Citizen, citizen's group Student Teacher, pupil The main stages of the drilling operation – using the "Down-the-hole hammer" method. Example of a borehole in Issoudun, the objective being to monitor level of the Berry water table (Upper Jurassic limestone). In 2014, the structure was fitted with equipment to constantly measure the water table level. Film produced for the SIGES Centre (Indre, 2014). © BRGM Visit BRGM's YouTube channel More news Infographic Geological heritage and scientific outreach: key figures for 2026 8 April 2026 Journal Géosciences No. 29: Talking about Earth 7 April 2026 News Clay shrinkage and swelling: changes to the national exposure map 1 April 2026 News Sustainable development and CSR master plan: BRGM sets out its objectives for 2030 24 March 2026 All our news
In 2014, the structure was fitted with equipment to constantly measure the water table level. Film produced for the SIGES Centre (Indre, 2014).