Post Greyhawk Wars: 585 CY
The Sheldomar is the Keoland- Ulek boundary and is navigable from Niole Dra to Gradsul. Perch and tench are abundant here. The tributary of the Lort is a short headwater rising from the Lortmils, and the Kewl river divides the Duchy from the County of Ulek. The Old River forms the western boundary of the Principality of Ulek. These tributaries are not navigable for much of their lengths, being fast-moving, muddy, and rocky, although the Kewl is navigable along its border with the Silverwood. Old River is trustworthy for its first fifty or so miles from the point where it meets the Sheldomar.