These Google Maps are a great way to get to know the development and drainage issues facing the Lye Valley SSSI (Site of Special Scientific Interest)
This map is quick overview of the catchments and issue in the Lye Valley:
This map is an in-depth view of the Lye Valley, Boundary Brook and the catchments and large development sites (Churchill, Old Road Campus, Nuffield and Valentia Road) allocated under the Oxford Local Plan 2020, it is more accurate and more recently updated:
Saving Headington's Heritage 