The Yellow River rises in Kilcorbry, north of
Croghan (near 53.351°N 7.302°W) and flows in an easterly direction. It passes under the
R400 and then turns northeast, flowing under Garr Bridge It meets several tributaries and then its last section forms part of the
Meath–Offaly border and passes under Sheep Bridge south of
Castlejordan. It meets the
Monagh River and then passes under Clongall Bridge and later enters the Boyne near 53.3818°N 7.0816°W. From the tripoint of the townlands Stonehouse, Killowen (both in County Offaly) and Ballyfore (County Meath) (53.3956°N 7.1421°W) until the junction with the River Boyne the Yellow River forms the boundary of counties Offaly and Meath. ==Wildlife==