 The longest tract of public land is upstream at and by Virginia Water Lake, particularly beyond that when Windsor Great Park is open, in this section it include walks in two parks in Chertsey.The river creates access for small motorboats and canoes for the 20 properties in its lowest reach at Hamm Court.Only its lower section below a weir is canalized the remainder is natural bank, including with habitat in minor sections for the European water vole and the middle course of the Bourne passes within a short space under the M3 motorway three times in the midst of which the M25 London Orbital Motorway crosses it.