The River Wye, which forms the National Park's boundary at Hay-on-Wye, is superb for canoeists, both beginners and experts. Canoes (but not powered boats) are generally permitted from Glasbury-on-Wye downwards, but must not be 'paddled about' to the annoyance of anglers. Access to the water is possible at a few points only, such as the Radnorshire bank just above Glasbury-on-Wye bridge and from Wyeford Road in Hay. There is a good balance of easy and difficult water. The river below Glasbury-on-Wye makes an excellent training ground for persons just getting used to the craft.