The Someșul Cald (Hungarian: Meleg-Szamos; literally "Warm Someș") is the left headwater of the river Someșul Mic in Romania. It joins the Someșul Rece in , a reservoir near Gilău. The reservoirs Mărișelu, Tarnița and are located on this river. Construction of the Tarnița – Lăpuștești Hydroelectric Power Station on the river began on June 15, 2008.