Sindarin 

gwathló

place name. Greyflood, shadowy river from the fens

The Sindarin name of the river “Greyflood” translated on the map of The Lord of the Rings (LotR/1082). This name is a combination of gwath “shadow” and (h)lô “flood” (UT/263).

Conceptual Development: This name first appeared as N. Gwathlo with a short o on the draft maps of the Lord of the Rings from the 1940s (TI/304, 312).

Sindarin [LotRI/Greyflood.002; LotRI/Gwathló.001; PE17/136.2908; PE17/136.3608; PE17/137.0601; PMI/Gwathló.001; SA/gwath.010; UT/261.2503; UT/263.4006; UTI/Agathurush.007; UTI/Gwathló.001; VT42/09.1611; VT48/27.2608; VT48/27.3613; VT48/28.1105] Group: Eldamo. Published by