The Hawin Croka is a large river which starts several hundred metres west of the Hawin Russagh in the south of Ward Fell. It then winds past Kellsthorpe and Rolf's Castle before reaching the bay near Kirk Ronan. The North Western Railway crosses the stream twice. The Main Line crosses it west of Kellsthorpe Road, and the Kirk Ronan Branch Line crosses it at Rolf's Castle.
The river was seen in Thomas and the Magic Railroad, where in the Big Dipper crosses the river.