Water reservoir on the Radomka River was built in 2001 year. From the 2001 to 2008 year there were carried out measurements of water levels in 16 wells near water reservoir.It was found, that water levels in the wells were correlated with water levels in water reservoir. At higher levels of water in the water reservoir there were also higher levels of water in the wells. The highest levels of water in the wells were in the spring season and afterwards systematically decreased till winter season. The water levels in the wells were always higher than in the water reservoir. Only the 2001 year was different, because then the reservoir was not filled completely. Higher levels of water were a result of depression curve. The higher levels of water in wells indicate the advantageous influence of water reservoir Domaniów on the terrain humidity in neighborhood, thus affecting the vegetation development.     ...