Hello BBC Radio 4 had a nice programme in their Open Country series.  It featured the natural history of ther Ballinadarra River, which rises in the Sperrin Mountain and flows through Kildress Parish into Lough Neagh. You can hear it online by googling for BBC radio4 listen again, then searching for the Open Country entry for last week Seasons Greeting to all Michael Burns researching Monaghan and McGerrity in KIldress and Corr in adjacent parishes