Formed by a meeting of becks, the Rothay almost immediately enters Grasmere then passing, via Rydal Water, to empty into the northern tip of Windermere. It is almost entirely trout fishing with some perch and pike in the reaches closest to Windermere. AmblesideM5 miles from Grasmere to Ambleside BB DT: ATS (Ambleside, Bowness and Windermere)