In 2004, the engineers Jacobs-Babtie examined six possible routes for the canal through Killamarsh. Of these, two were reasonably feasible, and were named Central Line East and Central Line West. At the time, the eastern route was felt to be the best option, and consultation with residents resulted in that route being included in the North East Derbyshire Local Plan. However, subsequent detailed design suggests that this may no longer be the best route. Redevelopment of the Tarran Bungalows site to the west of the village provided opportunities to reassess the western route, and it has gained support, as it would be more attractive for boaters, allowing them to access the village more readily. This route would also be considerably cheaper to construct that the eastern route. Both routes drop down into Nethermoor Lake, part of the Rother Valley Country Park and will ascend from the far side to regain the original course.