Prameniště Chomutovky, protected area in Czech Republic

Prameniště Chomutovky is a nature reserve of 1,881.8 hectares on the Krušné hory plateau near Hora Svatého Šebestiána, at 705–911 m. It is split into two parts by road I/7, which separates the Polské rašeliniště bog; peat sediments reach up to 10.5 m deep, and the Chomutovka rises in the central part of the larger western section.

The reserve was established in 2012 to protect rare plant and animal species living on high moorlands. The area had been used for peat extraction and grazing before protection status limited human activity and allowed natural recovery.

The reserve lies by Hora Svatého Šebestiána, whose German name was Bergstadt Sankt Sebastian; peat was cut at Schreiberovo rašeliniště from the first half of the 19th century, and borkování left small pools that later silted up. The name Chomutovka refers to the river that springs in the central part of the reserve.

The reserve lies around Hora Svatého Šebestiána, with its larger part west of the village on the Krušné hory plateau, crossed by road I/7, and a smaller part between the state border and the road from Načetín to the border crossing. The Chomutovka springs in the central part of the larger section, near Novoveský rybník. Peat extraction areas have no vegetation cover and recover only in waterlogged spots.

Peat was dug here by the borkování method from the first half of the 19th century, and the pits left behind filled with water; later drainage and silting erased most of them. Peat extraction continued intensively in the 1970s, and the bare surfaces that resulted are recolonised mainly by hare's-tail cottongrass (Eriophorum vaginatum).