The Bělá Stream joins the Třemošná in the western part of the municipal territory.

In 1509, Třemošná was acquired by Albrecht of Kolowrat, later it was bought by Jan and Bernard Waldstein.

In the late 17th century, Třemošná became part of the Nekmíř estate and shared its owners and destinies.

[4] From the beginning of the 19th century, the village began to gradually change its face thanks to the development of coal mining and industry.

[4] Třemošná is located on the railway line heading from Plzeň to Plasy and Žihle.