Event Organiser: The British Dam Society

The Toddbrook Reservoir Incident, London


  • Lecture
  • Watch online
  • London
  • 16 March 2020
  • 14:00 - 19:45
The Toddbrook Reservoir Incident

About this event

Please note that this event is closed to the press.

In August 2019, Toddbrook Reservoir in north-west England was affected by two storm events in quick succession, resulting in damage to the auxiliary spillway, located on the main earth embankment dam. The concrete lining to the auxiliary spillway was damaged and erosion of the underlying dam shoulder material occurred, prompting fears of a dam breach.

An emergency evacuation of approximately 1,500 persons from the downstream town of Whaley Bridge was completed. Multi-agency services were mobilised and the scour hole was infilled through use of a helicopter. Stream diversion and pumping works were initiated to empty the reservoir. Almost a week after the incident was declared, the residents were permitted to return to their homes.

The seminar will be delivered in three sessions, two in the afternoon and one in the evening.

The afternoon sessions (14.00 – 17.30) will cover:

  • The history of the reservoir
  • The events leading to the incident
  • The incident response
  • The incident coordination and evacuation of Whaley Bridge
  • The aftermath of the incident and interim work at the site

The evening session (18.00 – 19.45) will present the findings of the post-event investigations into the causes of the incident. This session will focus on the technical aspects of the incident and the lessons to be learned by the UK reservoir industry.

Early registration is recommended to secure a place.

Live streaming

This event is being live streamed into the following locations, please contact the organiser to book your place:


Mike Hopkins | [email protected] | 01608 664910


Greg Cornelius | [email protected] | 02920 478963


John Foster | [email protected] | 01133943589


Ryan McHugh | [email protected] | 0141 433 7696


Jenny Richardson | [email protected] | 07826 890898

Please see the flyer below for more information.



Session one

  • Alan Warren - BDS Chair
  • Chair: David Littlemore - BDS Vice-Chair
  • David Brown - Canal and River Trust
  • Richard Robson - Mott MacDonald
  • Billy Sheehy - Mott MacDonald
  • Peter Down - Mott MacDonald

Session two

  • Chair: David Littlemore - BDS Vice-Chair
  • Eddie Quinn - Kier
  • Wing Com. Gary Lane MBE - RAF
  • Steve Ovington - OnSite
  • John Perkins - Derbyshire Police
  • Kem Mehmet - Derbyshire Police
  • Ms Chris Wilman - Whaley Bridge residents
  • Ms Mo Wild - Whaley Bridge residents
  • Tony Deakin - Environment Agency
  • Simon Bamford - Canal and River Trust
  • Natalie Bennett - Canal and River Trust

Session three

  • Chair: Alan Warren - BDS Chair
  • Professor David Balmforth - Former ICE President
  • Dr Peter Mason - Damsolve Ltd
  • Dr Andy Hughes - Dams and Reservoirs


Institution of Civil Engineers
One Great George Street
London SW1P 3AA
United Kingdom
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For more information please contact:

Shelly-Ann Russell

e: [email protected]
t: +44 (0)20 7665 2147