Blea Tarn is a common name in the Lakes, there being three of them - plus a Blea Water. This one, on the ridge between Eskdale and Miterdale is the least accessible - only because it involves the steepest climb, it is not a great distance from the road.

Set in a glaciated depression under Bleatarn Hill, it is a not unattractive stretch of water, offering views south-west to lower Eskdale and the Irish Sea. It has no inflow on the surface, being fed by water running though the subsoil off the fells but the outfall is a good stream flowing south-west to join the River Esk.