PPS 15 Planning and Flood Risk (Revised)·Page 72·D13
Precautionary Approach to Flood Estimation (D13)
Flood risk assessments must incorporate allowances for increased rainfall, storminess, and sea level rise based on current UK research and guidance to account for climate change uncertainties.
Because of the uncertainties inherent in flood estimation and expected climate change impacts, the application of the precautionary approach to hydrological analysis of flood flows and the determination of flood event return periods requires any assessment of flood risk to incorporate the necessary allowances for increased rainfall, storminess and sea level rise specified in current UK research and guidance.
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