Mărcușa
The Mărcușa is a right tributary of the Râul Negru in Romania. It flows into the Râul Negru between the villages Mărcușa and Surcea. Its length is and its basin size is.
Tributaries
The following rivers are tributaries to the river Mărcușa :- Left: Lunca
- Right: Pârâul Întunecat, Groapa Pietroasă, Pârâul Rupt, Bortofălău, Pârâul Mic, Albiș