Effects of climate change on riverine flooding

Climate change has commonly resulted in higher temperatures, causing more water to evaporate from the land and oceans. These unstable weather systems are changing the size and frequency of rainfall, resulting in increased flooding events.

Increased Temperatures

As our planet’s atmosphere and the ocean continue to warm, evaporation rates, ambient temperatures and humidity levels are rising in our atmosphere.

Quantity of Rain

Higher levels of humidity in the atmosphere lead to heavier downpours. This increase in rainfall quantity leads to runoff and a higher likelihood of flood events.

Frequency of Rain

Changes in weather patterns lead to more frequent rain events. Prolonged downpours saturate the ground and waterways, leading to a higher likelihood of flood events.

Riverine flooding and climate events pose substantial economic risks to homeowners and property investors.

Learn more about how climate change is expected to impact Australian property.

Contextual Data

Climate Risk Engines use datasets from the past 20 years to calculate flooding probability, combining this information with satellite data and algorithms to account for local conditions. Contextual information used to determine risk of riverine flooding in an area include local rainfall data, surrounding waterway depths and previous records of flooding events.

Local Weather Data

Historical rainfall patterns for the local area will impact the probability of riverine flooding.

Waterway Mapping

Proximity to rivers and waterways will impact the likelihood of overflow.

Flood Records

Previous flood records help predict future conditions.

Riverine Flooding, Riverine Flooding, Climate Valuation
Riverine Flooding, Riverine Flooding, Climate Valuation

Asset Data

Climate Valuation analysis considers the design, materials used and height above ground for each individual property to provide a comprehensive view of the current and future flood risks to property.

The vulnerability of a property to flooding is driven by the characteristics of the building (e.g. floor height, building materials, foundation type). Building materials respond differently when exposed to water. Therefore, properties built or retrofitted with flood-resistant materials (e.g. concrete or glass block walls, metal doors and waterproof membranes) along with elevated ground levels and flood-specific foundations have lower vulnerability to flooding when compared to those without these materials and features.