Dobele structure is the only large scale underground water horizon structure in Latvia, except the existing Inčukalns UGS facility, suitable for creation of UGS, where the geological surveys have ever been carried out. Since 1970s 23 wells were drilled there, the exploratory activities of different scale continued in 1990s and 2008 – 2010. The results of the geological and well condition assessment done between 2008 – 2010 within the scope of the project “Geological and Economic Research of Possible Establishment of Natural Gas Storage Reservoirs in Latvia, Dobele District” 2006–G 130/06–TREN/06/TEN–E–S07.68968 confirmed that the technical condition of a few existing ground infrastructure elements (wells) in Dobele is satisfactory, but other elements, however, can no longer be used for operational or monitoring purposes.