Flood level
Flood level can be defined as the height reached by a body of water (such as a stream or river) resulting from overflow beyond its normal limits.
A high flood level is the maximum level to which a body of water could rise due to rainwater and runoff during a flooding event. High flood level calculations take into account local conservation or reclamation efforts supported by artificially constructed measures such as water storage tanks. High flood level information for a specific site can be used for planning purposes to help determine a design flood level.
A design flood level is defined in Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018. It is described as a historic or notional flood event of a given annual probability, against which the suitability of a proposed development is assessed and mitigation measures, if any, are designed to accommodate a storm event. This includes an allowance for climate change in line with current best practice national planning guidance.
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
The Master Builder: William Butterfield and his times. Book review.
Why construction can't afford to ignore the skills gap.
Building Safety Regulator, 19 August
Gill Kernick appointed Independent Chair of Residents’ Panel.
Connecting knowledge, technology and conservation
Building competence for the future of built heritage.
Building Regulations and Building Safety Act
CIOB publishes free advice for non-domestic clients.
Building Safety Newsletter from MHCLG.
An extraordinary record of steel engineering worldwide.
Households living near new pylons to save on bills.
ECA warns growth must not outpace grid capacity or skills.
The role of the client and decision making
CIOB response to built environment professions call for evidence.
Construction's sustainability reporting revolution
Tracking upfront embodied carbon with digital tools.
ECA welcomes procurement reforms
Public spending must back British jobs and skills.