The River Great Ouse in Cambridgeshire has a long history of water milling, stretching back to at least the 10th century and possibly to the Roman period. The authors use remote sensing (LiDAR), cartographic analysis, fieldwork, documents (especially contemporary litigation) and literary sources, to reveal new findings about this fascinating landscape. The Great Ouse's watermills were recorded as the most valuable in England in the Domesday Survey...