[4] The Raška originates from a strong well and several sinking streams flowing out from the cave south of the Sopoćani monastery, in the Pešter region.

Waters of the well and the sinking streams flowing from the Koštan-Polje are gathered into the catchment which enabled construction of the small subterranean hydro electrical power plant Ras (6 MW).

As it enters the Raška oblast, eastern part of the much larger Stari Vlah-Raška Region of the southwest Serbia, the river flows next to the old Petrova church and Novi Pazar's suburbs of Banja and Postenje.

At the mouth of the Tušimska into the Raška, in the village of Požežina, a 7,000 years old figurine was excavated close to the bank during the digging of the gas pipeline.

Female attributes are enhanced, while it has ram's horns on the head which is generally triangularly shaped with carved slanted notches for eyes.

The entire find are remains of the prehistoric Neolithic house, with another smaller figurine and numerous ceramics and fragments of an altar also discovered in it.

At the source, the water is of an exquisite quality, but in Novi Pazar and several kilometers downstream, it is devoid of animal life.

[9] In 2010, the hydrology institute "Jaroslav Černi" from Belgrade drafted a project for mini, anti-erosion dams on the river and its tributaries, and other anti-flooding measures.

The dam is placed on the location in the Raška municipality, but the closest settlement is the small village of Batnjik, which belongs to Novi Pazar.