Flood modelling forms a vital part of understanding flood risk and hazards. This means undertaking the evaluation and design of flood mitigation solutions that address both current and potential future flood risk conditions. Flood modelling can also be used to provide flood forecasts, enabling communities to be prepared for and respond to impending danger.
Flood Risk Assessments
Flood risk assessments are an integral part of planning. Many countries’ planning policies require newly proposed developments in areas of risk, or of a certain size, to demonstrate that they will not be at significant flood risk for the lifetime of the development and do not increase flood risk downstream or to adjacent sites.
Flood & Hazard Mapping
Flood and hazard mapping involves identifying areas that are susceptible to flooding based on various factors such as historical flood data, river flow rates, topography, land use patterns, and rainfall intensity. By analysing these factors, we can determine the likelihood and severity of flooding in different areas.
Flood forecasting is an essential component of flood risk management to reduce the impact of flood events. Early warning is crucial for efficient emergency response and contingency planning.
Hydrological analysis aims to understand and quantify the processes that influence the availability and quality of water resources in a particular area. It involves collecting and analysing data related to rainfall, streamflow, water levels, soil moisture, and other relevant parameters. Combined with hydraulic modelling, it enables you to accurately represent water entering and leaving a model and simulate flows to define the variation of water level over time.
Options appraisal is a process used to evaluate and compare different flood management options or measures to identify the most effective and feasible solution for a particular area or community at risk of flooding. It involves assessing various flood risk management approaches, including benefits and costs, to make informed decisions for mitigating flood risks and improving overall resilience.
Breach analysis involves hydraulic and hydrologic modelling to simulate the breach process and the resulting flood propagation. It aims to understand the potential consequences of a failure and to inform emergency management and decision-making processes. It helps in identifying areas that may be at risk, estimating flood depths and velocities, and determining the potential time of arrival of the flood wave at downstream locations.
Economic analysis of flood risk is often required in order to understand potential damages to houses, businesses and vehicles, the effect of property level protection, and risk to life.