Series of SRR weirs came close to breaching in flood event
Publish date
02 September 2025
Case ID#
3120
Title
Series of SRR weirs came close to breaching in flood event
Nation
England
Regulator reference no.
310
Legal status
Non-statutory
Reservoir type
Impounding
Reservoir capacity
10M+ m3
Year of construction
Unknown
Main construction type
Unknown
Dam height
5 - 9.99 metres
Dam flood category
Other / Not applicable
Hazard class
Undesignated / Unclassified
Reservoir use
- Other
Owner type
Unknown
Date & Time of incident
02 July 2007 - 12:00
Date incident closed
Observations that caused the incident to be declared
- Slope or face deformation (slippage, cracking, slumps, mounds, depressions)
- Deformation or instability of crest (settlement, cracking, depressions)
Describe the incident
A series of weirs, already in a poor condition, were damaged during a flood event. One weir in particular, about 1.5m high and impounding about 12,000m3 , came close to breaching due to erosion around an abutment. It was not possible to access the sluice gate to lower the water level until the flood subsided
Supporting photos
Natural processes which initiated or contributed to the incident
- Flood - within dam design capability
What were the main contributing factors to the incident occurring?
Dam factors
- Deterioration of materials
External factors
- None
Shortcomings
- Surveillance shortcoming
- Maintenance shortcoming
What was the root cause of the incident?
Impacts on the reservoir
- External erosion
Supporting photos
Describe any human factors which influenced the incident
Describe any instrumentation at the reservoir and how this was used in warning of the incident or providing monitoring during the incident
Was instrumentation effective leading up to and during the incident?
Not Applicable
Describe any assistance by external parties and impacts on the downstream population
None
Summary of studies or investigations undertaken
Unknown