- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 27 Aug 2020
Annual exceedance probability
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines the annual exceedance probability as the: ‘Probability of exceeding a specified flow or level in any year (inverse of the return period for an annual maximum series.)’
See also: Return period.
 Related articles on Designing Buildings Wiki
- Catchment flood management plans.
- Detention pond.
- Flood and water management act.
- Flood risk management plans
- Flood risk.
- Median annual flood.
- Pitt Review Lessons learned from the 2007 floods.
- Return period.
- River engineering.
- SUDS Manual.
- Sustainable Urban Drainage Systems.
- Water engineering.
Featured articles and news
Chancellor announces latest Winter Support packages.
Tapping technology to boost infrastructure and create jobs.
4 ways to ensure certificates are valid.
White elephant construction projects.
How Paul Williams bent over backwards to overcome racial barriers.
Organisation revises actions around dealing with COVID-19.
CIOB, NFCC, RIBA, RICS call for changes ahead of Building Safety Bill.
Developments in the Future Homes Standard.
An American chimney feature with a colourful past.
Homes based on need, not ability to pay.
Historic England adds 216 entries to the 'at risk' register.
Will cycling and walking provisions be preserved?
Assembly point levels range from relative to ultimate.
Signs are pointing to a recovery for the construction industry.