River Allen (Truro)
The River Allen, or St Allen River, to the north of Truro is one of two watercourses in Cornwall which share this name.
The River Allen rises at Ventoneage north of St Allen and flows southwards through the Idless Valley and Daubuz Moors into Truro. Here it joins the River Kenwyn to form the Truro River.
The river is home to healthy populations of Brown Trout, European Eel, Minnow and Bullhead also known as the ‘Miller’s Thumb. The lower tidal reaches also hold Bass, Grey Mullet, and Flounder. There is also a small run of Sea Trout into the river.
