The encounter in "A narrow girdle of rough stones and crags" happened on the eastern shore of Grasmere lake a few-hundred yards south of Dove Cottage, where William and Dorothy were living at the time.
Click here for a photosphere video of the area related to the poem on the "Wordsworth: Poetry and Place" tool. As noted there, the introduction of a road along the shore fundamentally altered the landscape in which the poem was set.
Vetted?
No