Asphalt Specialists In Hydraulic Engineering


Coastal Protection
Dam Waterproofing
Dam Erosion Protection

Dam Spillway Protection

Fordingbridge Flood Alleviation Scheme
Bodmin Town Leat

Blackmoorfoot Reservoir

Loch Ericht Refurbishment Works
Ports & Harbours
Flood Alleviation
River Training
Scour Protection
Underwater Impact Protection
Strengthening Rock Structures
Landfill Linings
Offshore Services

Blackmoorfoot Reservoir Reservoir, Marsden, West Yorkshire

Erosion protection to spillway channel

Spillway VegetationBlackmoorfoor Reservoir is a raw water catchment reservoir. During extreme rainfall events a significant discharge of water flows down the spillway. Beyond the spillway there was an open channel which was being eroded by the high flows.

The solution was to re-profile the channel to the trapezoidal shape of the spillway channel and line it with 200mm Open Stone Asphalt. A filter layer of geotextile was placed beneath the OSA.


  • Low level flow capacity provided by pipes beneath erosion protection
  • Main channel protected with 200mm OSA placed on geotextile
  • Topsoil brushed into surface of OSA to promote establishment of vegetation over OSA
Blackmoorfoot Reservoir

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