Northern Territory flooding from ex-Tropical Cyclone Narelle and riverine impacts in March 2026
Consensus Summary
Northern Territory communities are grappling with severe flooding triggered by ex-Tropical Cyclone Narelle, which dumped heavy rain on March 10–11, 2026, after the region already endured catastrophic flooding in early March. The Katherine River, which peaked at 19.2 metres on March 7—Katherine’s worst flood in 28 years—was forecast to reach 17.5 metres again by midweek, though warnings fluctuated as water levels rose and fell. Residents in Katherine, Daly River, and Adelaide River faced repeated evacuations, road closures, and disrupted services, with some areas still under boil water alerts. The BOM confirmed the river would start receding by Thursday, March 14, though prolonged major flooding persisted in Daly River. Small businesses and displaced residents, including those from remote communities like Numbulwar and Palumpa, are seeking government support amid financial losses and prolonged uncertainty. While some sources report easing conditions in Adelaide River, others highlight ongoing risks from residual rain and saturated catchments, with interstate emergency volunteers deployed to assist local crews.
✓ Verified by 2+ sources
Key details reported by multiple sources:
- The Katherine River peaked at 19.2 metres on March 7, 2026, marking Katherine’s worst flooding in 28 years
- Ex-Tropical Cyclone Narelle dumped heavy rain across the NT on March 10–11, 2026, triggering renewed flooding
- The Katherine River was forecast to reach the major flood level of 17.5 metres on Wednesday afternoon (March 12–14, 2026) in multiple sources
- The BOM downgraded flood warnings for Katherine on Monday afternoon, March 11, 2026, after the river briefly fell below minor flood levels
- The river at Katherine Bridge was at 15.81 metres on Tuesday afternoon, March 12, 2026, before rising further
- Daly River/Nauiyu remains under prolonged major flooding as of March 14, 2026, with water levels expected to stay elevated
- Adelaide River experienced flooding on Monday, March 11, 2026, with homes inundated and a boil water alert still active
- Around 270 residents were evacuated to Katherine High School on Sunday, March 9, 2026, before the shelter was stood down on Monday
- The NT government requested additional federal support for small businesses impacted by flooding in Katherine
- The BOM predicted the Katherine River would start receding on Thursday morning, March 14, 2026, after peaking
Points of Difference
Details reported by only one source:
- Ben Hockey (local business owner) expressed ‘mixed feelings’ about the river not yet peaking and said residents were ‘not ready to let their guard down’
- George Pikos (pizza restaurant owner) lost over $20,000 in stock and equipment and called for government financial support for small businesses
- Member for Katherine Jo Hersey mentioned a field hospital was set up after Katherine Hospital was evacuated over the weekend
- SecureNT warned residents may become isolated if the river reaches major flood levels, including livestock and pets
- NT Chief Minister Lia Finocchiaro said ‘every single day remains unpredictable’ this wet season
- Trent de With (local volunteer) called the near-miss flooding ‘fantastic’ and noted rain takes about three days to flow downstream into Katherine
- Some residents of displaced communities like Murray Downs and almost 200 Numbulwar evacuees began returning home by air this week
- Ali Curung residents received their first instalment of Immediate Relief Payments, with the remainder pending their return
- Beswick/Wugularr residents are sheltering on higher ground as flooding eased but remains a risk
- Royal Darwin Hospital and Palmerston Regional Hospital escaped damage, and a weather-related code yellow was lifted on Thursday
- The BOM confirmed floods were no longer threatening Adelaide River as of Wednesday afternoon, March 13, 2026
- Emergency service volunteers from South Australia and the ACT arrived to support Katherine’s frontline efforts
- NT Fire and Emergency Services Commissioner Andrew Warton assured interstate volunteers local crews would reciprocate support in the future
- A BOM flood watch was active across much of the Top End due to ‘moderate to heavy rainfall associated with ex-Tropical Cyclone Narelle’
- The Stuart Highway had sections damaged by flooding this month, with closures ongoing
- SecureNT warned that if the river reaches major flood levels, roads may remain closed and residents could be isolated
- The BOM’s Todd Smith said river levels at Katherine Bridge would ‘stay up for quite a while’ until Thursday before receding
- David Croft (Adelaide River resident) built a flood wall in 2007 after his home flooded but it was topped by 10 cm in the latest deluge
- Lloyd Beck (Adelaide River resident) rescued a neighbour using a dinghy during Monday’s flooding
- Fleur Parry (Djilpin Arts owner) spent the weekend sandbagging her Katherine office and expressed frustration over delayed clean-up
- NT Chief Minister Lia Finocchiaro said flood evacuees from Numbulwar and Palumpa were moved to Batchelor’s education unit
- Children and Families Minister Robyn Cahill called Labor MP Dheran Young’s criticism of the government ‘outrageous and offensive’
- The BOM noted river levels at Birdie Creek exceeded the early March 2026 peak due to ongoing rain
Contradictions
Conflicting information between sources:
- Article 1 states the river was ‘just below the minor flood level’ on Tuesday afternoon, March 12, while Article 3 says minor flooding was ‘likely from Tuesday morning’ with further rises possible overnight
- Article 2 claims the Katherine River ‘peaked just above the 17.5m major flood level on Thursday morning’ (March 14), but Article 1 states the peak was forecast for Wednesday afternoon (March 13)
- Article 1 reports the river was at 15.81m on Tuesday afternoon, March 12, while Article 4 says minor flooding at Katherine Bridge was ‘likely from Tuesday morning’ with no specific level provided
- Article 2 says Adelaide River flooding ‘has since receded’ as of Thursday morning, March 14, but Article 4 states a boil water alert remains active for Adelaide River and surrounding communities
- Article 3 mentions the BOM predicted ‘further showers and thunderstorms are possible over the next few days’ (March 13–14), while Article 2 states ‘promising forecasts’ suggested residents were ‘done here’ by Thursday
Source Articles
Katherine braces for possibility of second major flood this month
Residents in Katherine are bracing for the possibility of major riverine flooding today, which would mark the second significant weather event to rock the town in a month....
Katherine escapes more flood damage as remote evacuees start heading home
Major flooding has eased along the Katherine River and the town has been spared further damage, while surrounding remote communities are starting to recover....
Weary Katherine residents on edge ahead of another possible major flood
Exhausted residents in the Northern Territory town of Katherine are once again on alert as they prepare for further possible major flooding on Wednesday....
BOM says more rain causing 'significant river level rises' in soaked NT
BOM is warning major riverine flooding could follow the "moderate to heavy rainfall" dumped across the NT by ex-Tropical Cyclone Narelle....