The Lugg rises in the hills northwest of Llangunllo, in Radnorshire. From here it flows down through Presteigne and across into Herefordshire. In Herefordshire the Lugg runs through Leominster, south of which it is met by a tributary, the River Arrow, then to a confluence with the River Wye, which it joins at Mordiford, nine miles downstream of Hereford and 45 miles from its source.
Below Leominster the river was made navigable under the River Wye & Lugg Navigation Act 1696 for improving the River Wye, and had pound locks. Despite several attempts to improve it, including making flash locks against bridges, the river was probably never a satisfactory navigation. Commercial navigation probably ceased in the early 19th century. It is still sometimes used by small boats, but can be very dangerous when in flood. The Environment Agency is the navigation authority for the river.
The river is popular with canoeists.
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about River Lugg)
- "UK Rivers website". Archived from the original on 17 October 2007. http://web.archive.org/web/20071017045743/http://ukriversguidebook.co.uk/lugg.htm. Retrieved 28 November 2007.
- "Total Fishing Gear". Archived from the original on 29 September 2007. http://web.archive.org/web/20070929023941/http://www.totalfishinggear.co.uk/forumtfg/messageview.cfm?catid=2&threadid=2206. Retrieved 28 November 2007.
- "Dwylon". http://www.dwlyon.com/Fishing/fly_riverlugg.aspx. Retrieved 28 November 2007.
- I. Cohen, 'The non-tidal Wye and its navigation' Trans. Woolhope Nat. Field. Club XXXV (1955-7), 83-101
- A. Brian, '"As to the Lugg": its vanished mills, broken weirs and damaged bridges’ Ibid. XLVIII(1) (1994), 36-96.