In our 2024 paper on the Dorchester aqueduct (Manley et al. Reference Manley, Cheetham, Stewart and Russell2024), Fig. 3, depicting the routes for the Dorchester aqueduct previously suggested by other scholars, shows a route that we termed the Sparey-Green route (also discussed on p. 89 of the paper). This was based on Sparey-Green’s identification of a spring near the Frampton villa as lying ‘at approximately 84m OD, on the right level to have fed the confirmed channel nearer Dorchester, if falling at a gentle gradient’ (Sparey-Green Reference Sparey-Green1995, 135). However, we recognise that Sparey-Green did not explicitly suggest a route by which this water source could supply the aqueduct as depicted on our Fig. 3. We are happy to publish a revised image reflecting this (Fig. 1).

Fig. 1. Detail of Steppes Bottom re-entrant showing conjectured routes of aqueduct by Coates (dashed line), Foster and Farrar (dotted line) and LiDAR-derived hydrological model (solid line). Putnam’s excavation trench from 1992 shown at the top of Steppes Bottom.