Poetical Works of 1827.) Subsequent sonnets followed the river downstream, past Birks Bridge (Sonnet XI), to Ulpha (Sonnet XXII), before reaching “the Deep...over smooth flat sands” with Sonnet XXXII. Recreation The River Duddon is a salmon fishery. The section of the river downstream from Seathwaite is popular with canoeists and is graded as 3 with some easy 4. From Birks Bridge, through Troutal Gorge to Seathwaite there are some difficult canoeing sections graded at 5 requiring higher water levels to navigate. Many parts of the Duddon Valley are visited by tourists, but the location is outside the main tourist area of the Lake District. Consequently, most of the visitors are day trippers who live locally, or who travel from elsewhere in northern England: Hunter Davies considered its unfrequented nature one of its great attractions. Duddon in art Duddon Sands, Cumbria by William Turner in Tate Britain See also Hardknott Roman Fort River Esk, Cumbria Wonderful Walker References Rivers of Cumbria Furness