Still carrying water to this day and largely preserved in its original form, the Grüner Graben water ditch in Pobershau is an example of the water management systems found in the Marienberg Mining Area. Constructed in the second half of the 17th century, the Grüner Graben water ditch extends over a length of 8 km. The water delivered by the ditch was utilised in the mines and for driving the water-powered machines in ten tin stamp mills and ore washers in Pobershau. From the 19th century its water was used for the emerging industry in Pobershau.