Severe flooding across Australia’s Northern Territory has forced evacuations, cut key transport routes and pushed saltwater crocodiles into populated areas, illustrating the complex and sometimes unexpected risks that accompany large-scale natural disasters.
Authorities have warned residents to avoid floodwaters entirely after crocodiles were seen moving well beyond their usual habitats as swollen rivers spread across towns and transport corridors.
“There are crocs absolutely everywhere … please don’t go in the water,” a police commander said during the emergency response, according to reporting in The Times, warning that fast-flowing rivers combined with increased crocodile activity make floodwaters particularly dangerous.
The situation highlights how secondary hazards - from wildlife displacement to infrastructure disruption - can complicate catastrophe response and claims handling following extreme weather events.
The Northern Territory is home to more than 100,000 saltwater crocodiles, the world’s largest population of the species. These animals, which can grow up to six metres (20 feet) long, typically inhabit coastal rivers, estuaries and wetlands.
During major flood events, however, rising waters can connect waterways and floodplains, allowing the predators to move into areas where they are rarely seen, including towns and road networks.
Saltwater crocodiles are among the few animals known to actively prey on humans. In the Northern Territory they have been linked to around 20 fatal attacks over the past two decades, including the death of a 12-year-old girl in July 2024.
Authorities say this is one reason residents are being urged not to enter floodwaters even if they appear shallow or calm.
The flooding follows several days of intense monsoonal rain across the region and is being described by officials as one of the most severe flood events in decades.
More than 1,000 residents have been evacuated from remote communities, while hundreds of people have taken shelter in emergency centres in the territorial capital, Darwin.
The town of Katherine - about 200 miles south of Darwin - has been among the hardest hit.
Floodwaters from the Katherine River submerged more than 100 homes, and the town’s hospital was evacuated as water levels approached record levels.
Transport disruption has also been significant. Floodwaters cut the Stuart Highway at Katherine, stranding travellers and halting freight traffic along one of Australia’s most important road links, which runs roughly 1,700 miles across the country.
Northern Australia is highly exposed to extreme weather, including cyclones, monsoonal flooding and storm surge, making catastrophe preparedness a major issue for insurers operating in the region.
Flood losses are a particular concern in Australia’s insurance market. According to the Insurance Council of Australia, flooding has been one of the costliest natural disaster drivers in recent years, with major events generating billions of dollars in insured losses.
Large-scale flood events often create complex claims environments, involving property damage, business interruption, infrastructure disruption and evacuation-related losses. Remote locations and damaged transport links can also slow damage assessments and repair work.
Secondary effects - such as wildlife displacement, contamination of floodwaters, and disrupted emergency services - can further complicate recovery efforts and risk management.
Authorities say evacuation operations remain the priority as floodwaters continue to spread across parts of the vast territory.
The Northern Territory covers roughly 520,000 square miles - more than five times the size of the United Kingdom - but has a population of only about 260,000 people, meaning many communities are remote and heavily dependent on a small number of transport routes.
Animal rescue groups have also been affected. One shelter reported that floodwaters submerged its kennels, forcing staff to move animals to the upper floor of a nearby house while awaiting safer conditions.
