Tajch Bakomi, a tajch (a historic mining reservoir), was built between 1735 and 1737.
According to Baron Ján Nepomuk Mitrovský, it was needed to make better use of surface water that was running off to waste from the collecting streams on Krížna, Sitno and Dekýš, as well as water from lower Krechsengrund.
Work on the Bakomi collecting ditch (about 800 m long) began as soon as the tajch below Veterník (Krechsengrund) was completed. Later, the Fliačsky collecting ditch (1,800 m long) was built from nearby Krížna (below Peciny). At the same time, work continued on the Hodruša Ditch, which was about 8,000 m long when finished. Between 1789 and 1791 the tajch underwent its most extensive reconstruction up to that time.
A feeder channel connected tajch Bakomi with tajch Veľká Vindšachta. It carried surplus water from Bakomi to Veľká Vindšachta, which supplied most of the water used to power the mining and ore-processing machinery.
