[2] The Smolna River begins near the village of Wabienice, located approximately 7 kilometers north-east of Bierutów.

Then it flows westwards and after approximately 12 kilometers, at the height of Solniki Wielkie, it crosses the provincial road no.

For the next few kilometers, the river flows through a partially forested area, passing Gręboszyce, Smolna and Zimnica.

[3] After passing Ligota, the river enters the Lasy Grędzińskie reserve - an area protected by Natura 2000.

[3][4] According to data from 2009, the permissible standards for NH4, NO2 and Cu were exceeded in the Smolna waters, which makes the river an unfriendly environment for the existence of cyprinids.