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Built: 1983
Capacity: 1000 M.G.
Max Depth: 200ft
Parking: Ample, close by
Surface Area: 154 acres
Type: Fly fish or spin


The increasing numbers of visitors to Douglas in the late 1800s called for a more reliable source of water. The Clypse and Kerrowhoo Reservoirs had already been constructed to ease demand, but were not enough.

A single all island water authority was formed in 1974 after dry weather in the south and west prompted change in the event of droughts. The Sulby River was already under consideration as a possible reservoir and by 1976 the site was commissioned. The reservoir became fully operational in 1982 and is the largest reservoir on the Island. Its completion meant the almost complete redundancy of the Block Eairy Reservoir, which was built in the 1940s.


The more adventurous angler should get to areas around Close and Crammag farm ruins.


Sulby Reservoir (capacity 1,000 million gallons) is situated at Tholt y Will on the Sulby River. It is the largest Manx reservoir. Good parking is available off the A14 and a path leads from there to the Lhergy Rhennie area.

Related News Articles

  • West Baldwin By-pass Contract Awarded 2 August 2007
    Island Drainage and Groundwork mainlaying team have been awarded the contract to install 2. [More]
  • Lieutenant Governor Visits Sulby and Douglas Water Treatment Works 6 September 2006
    His Excellency the Lieutenant Governor Vice Admiral Sir Paul Haddacks KCB was given a guided tour of the Water Authority’s largest reservoir and two main Water Treatment Works recently. [More]
  • No Need For Hosepipe Restriction 16 March 2006
    As a direct result of the availability of extra water from the new treatment works in Sulby and the improvements in the pipeline and pumping facility from Sulby Reservoir over Beinn-y-Phott into West Baldwin Reservoir the Water Authority will not be introducing a hosepipe restriction in April as it has done in recent years. [More]
Sulby Reservoir

Sulby Reservoir

Sulby Reservoir

Sulby Reservoir

Sulby Reservoir

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