RSK provides Flood Risk Assessments (FRA) and Drainage Impact Studies (DIS) ranging from sites of smaller nature to those requiring major basin-wide studies ahead of significant infrastructure developments. RSK's civil engineers coordinate all plans and designs with the Group’s in-house ecologists, landscape designers and geotechnical engineers to provide the most appropriate, integrated service for each individual site. |  | Our assessment procedure includes:
- Preliminary or scoping studies
- Consultations with the Environment Agency and other relevant operating authorities to determine extant flood risk and drainage information
- A report, reflecting the scale and significance of the site, generally including:
- A location plan: geographical features, watercourses, drainage outfalls
- A topographical plan of the site
- Maintenance and performance of flood alleviation measures
- An assessment of the source of potential flooding
- A plan of site showing existing information on extent and depth of flood events/predictions: anecdotal, photographic, survey results or model estimates
- Plans and descriptions of any structures that may influence local hydraulics
- Calculations of flooding parameters, including the predicted increase in rainfall caused by global warming
- A cross-section of the site showing finished development levels
- An assessment of on-site drain and sewer hydraulics (existing or proposed) during flood events
- Estimations and likely impacts of displaced water volumes from the site following development
- An assessment of the potential impact of development on fluvial or coastal morphology and long-term stability and sustainability
- An assessment of the residual risks after the construction of any necessary defences
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