Forecasting Flooding Across Rivers, Coasts and Cities: Data, Modelling and Nature-Based Solutions

What this episode covers

The Naked Scientists explore flooding in all its forms, from rivers and heavy rain to coastal storm surges, and how weather, land use and rising seas combine to affect communities. The conversation brings together flood researchers and data scientists to explain what drives floods, what makes forecasting hard, and how data from gauges, satellites and computer models is used to warn and protect people and infrastructure.

• Key insight 1: Floods are primarily driven by weather and rainfall, but human actions like urban development and drainage changes can magnify impacts.
• Key insight 2: Coastal flooding hinges on tides, sea level, and storms, with tide gauges and satellites providing complementary data for forecasts.
• Key insight 3: Forecasts rely on ensembles and models that couple land and sea processes, aiming to improve lead times for warnings and barrier operations.
• Key insight 4: Nature-based solutions such as green roofs, rain gardens and restored wetlands can dampen flood energy and support long-term resilience.

Overview

The podcast examines how floods occur, how forecasting is evolving, and what strategies exist to reduce flood risk. The discussion brings together experts in meteorology, oceanography and hydrology to explain flood formation, data streams for forecasting, and the evolving role of nature-based solutions in flood management. A core theme is the interaction of weather with the landscape and the sea, and how climate change is altering the intensity and distribution of flood events.

“Flooding is shaped by a combination of atmospheric systems, river catchments, land cover and tidal dynamics, and it is this complex interplay that forecasts must capture.” - Chris Smith