Capped Boreholes

These twelve items are relics of a C.19th project to create a reservoir in this valley. It was abandoned in favour of Burrator (Starkey, Exploring Dartmoor, pg172-173). The first capped borehole (No.01) is located at a height of 367 m and the last (No.12) is located at 365 m. This suggests the possible maximum height of the proposed dam and could even give an indication of the volume of water intended by following the nearest contour line by eye. This proposal was clearly much smaller in volume than Burrator. It would have left Hart Tor and Black Tor alone, but would have touched the B3212 road at the sharp corner. It would have been below Devil's Bridge, and maybe passing just below the old Hart Tor Rifle Range. It is interesting to note the curve of the borehole line main test locations - does this mean that the dam itself would have followed a curve? If so it would be the only dam on Dartmoor to do so (?). What is very interesting are the four 'extra' boreholes that seem to have been placed 'around' No.08 (i.e. Boreholes Nos. 06, 07, 09 and 10) - these are all just on the edge of the ancient settlement and their 'symmetry' was not obvious until I had plotted those points on GPS/ Dartefacts. One gets the impression that there was an issue found with test hole No.08 and so further ground investigation around it (but outside of an ancient monument/ settlement) was required? Perhaps this investigation delivered an unfavourable result and this was another reason why Burrator was chosen over this location? I would be very interested to hear from an engineer (mathematician/ hydrologist etc??) who could estimate the volume of water to be retained by a dam of this size!

Map may take a few seconds
  • Refreshments, Facilities & Accomodation Refreshments, Facilities & Accomodation
  • PUDC (Paignton Urban District Council) Boundary Stones, Venford Reservoir, Holne Moor PUDC (Paignton Urban District Council) Boundary Stones, Venford Reservoir, Holne Moor
  • Named Tors, Hills & Outcrops (for Baggers!) Named Tors, Hills & Outcrops (for Baggers!)
  • WD (War Department) Stones WD (War Department) Stones
  • Tinners' Huts Tinners' Huts
  • Millstones Millstones
  • Cists Cists
  • Dewey Hills Dewey Hills
  • B.M.s B.M.s
  • Historic Sites Historic Sites
  • Prehistoric Sites Prehistoric Sites
  • Stone Rows Stone Rows
  • Stone Circles Stone Circles
  • Standing Stones Standing Stones
  • Car Parks Car Parks
  • Twin Peaks References Twin Peaks References
  • Crosses Crosses
  • PCWW 1917 Markers PCWW 1917 Markers
  • Land Features Land Features
  • Water Features Water Features
  • Dartmoor 365 Map Dartmoor 365 Map
  • Trig Points (Trigs that can still be found!) Trig Points (Trigs that can still be found!)
  • PCWW 1919 Markers PCWW 1919 Markers
  • PCWW 1932 Markers PCWW 1932 Markers
  • Hut Circles Hut Circles
  • Apple Crushers Apple Crushers