The River Mimram chalk stream flows through a twelve mile-long valley in the centre of Hertfordshire. It rises near Stagenhoe, north of Whitwell and flows through Whitwell, Welwyn, Digswell and Panshanger en route to its confluence with the River Lea at Hertford. The geographic features of the area can be found on Google Earth and on Ordnance Survey Explorer Maps 1/25000 scale:
No 182 – St Albans and Hatfield;
No 193 – Luton and Stevenage;
No 194 – Hertford and Bishop’s Stortford.
The following maps give more detail of the valley, its features and the work of the project. They are all downloadable in .pdf format.
Stylised Map – showing the main features along the valley and their approximate locations.
Photomosaic Map – showing the main visual images from along the ;ength of the valley and their approximate locations.
Parish-level Maps – detailed mapping extracts for each of the Local Planning Authority areas involved, containing the rlevany parish-level maps..