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 Video Greetings 2026 17 December 2025 News La Réunion Region and BRGM strengthen their strategic partnership 19 December 2025 Teaching material A booklet to help you better understand your Pet Rock 19 December 2025 News Groundwater situation on 15 December 2025 18 December 2025 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).