ᠰᠠᡥᠠᠯᡳᠶᠠᠨ (sahaliyan, “black”) + ᡠᠯᠠ (ula, “river”), literally “black river”.
ᠰᠠᡥᠠᠯᡳᠶᠠᠨᡠᠯᠠ • (sahaliyan ula)