Snimeÿa is one of the three main rivers found on Lan’ork on the Duane.
They are named after the three goddess of Fate.

References

* Center: Golfindely, homeland of Arona, connected to the Warring Kingdoms of Lan’ork by the Isthmus of Ghört’s Hammer. The Isthmus of the Dragon Head seems to lead to Malvina’s cave and hideout. Mount Elok’ram is pointed as the highest place of the World yet discovered. Three main rivers are drawn: in the ancient myths of the people of this land, they represent the three Daughters of Ghört, weavers of men’s destinies: Tibreÿa, Uleÿa, and Snimeÿa. Snimeÿa cuts the thread of life, which is shown as the river leads after many meanders to the Marshes of Doom. — (ref.)