The Gilrain was a river in the south of Gondor.
Course
The Gilrain flowed from its source on the southern slope in the east of the White Mountains swiftly southward until at the end of the southward outlier of the mountains that separated the valley of the river Gilrain from the valley of the river Celos, it entered a wide shallow depression. There the Gilrain wandered for awhile and formed a small lake at the southern end of the depression where it cut through a ridge and flowed over waterfalls again swiftly southward until its confluence with its tributary, the river Serni. A short distance downstream at Linhir were the fords where travellers on the road from Erech to Pelargir crossed over the river. The Gilrain then continued to flow southwest for another 20 miles until it emtpied into the Bay of Belfalas west of the Ethir Anduin.
