Hawaii flooding crisis with dam failure risks and evacuations across Oahu and Maui
Consensus Summary
Hawaii is facing its worst flooding in over 20 years as severe storms triggered life-threatening flash floods and forced evacuations across Oahu and Maui. The 120-year-old Wahiawa dam on Oahu is at critical risk of failure, with water pouring over its spillway at 1,500 gallons per second, prompting a 'LEAVE NOW' order for thousands of residents downstream. Emergency services rescued over 200 stranded people, but no deaths or injuries were reported despite homes being swept away. Governor Josh Green activated the National Guard and warned of potential billion-dollar damages, attributing the flooding to saturated soil and 'Kona low' storms. While consensus exists on the damâs danger and evacuation numbers (ranging from 4,000 to 5,500), sources differ on the severity of Mauiâs evacuation status and exact rainfall measurements. Experts link the extreme weather to climate change, and officials stress ongoing risks despite temporary receding waters.
â Verified by 2+ sources
Key details reported by multiple sources:
- More than 4,000 people were ordered to evacuate in Waialua and Haleiwa, Oahu, due to flooding (ABC, Guardian)
- The 120-year-old Wahiawa dam on Oahu is at 'risk of imminent failure' and water was actively running over its spillway at 1,500 gallons per second (ABC, Guardian)
- Emergency sirens blared and a 'LEAVE NOW' evacuation order was issued for areas downstream of the Wahiawa dam at 5:35 AM on Friday (ABC, Guardian)
- Hawaii Governor Josh Green activated the Hawaii National Guard to respond to the flooding (ABC, Guardian)
- Winter storm systems called 'Kona lows' caused torrential rains, with Kaala peak receiving nearly 400mm in one day plus 670mm over March 10-16 (ABC, Guardian)
- No deaths or injuries were reported despite widespread flooding and homes being swept away (ABC, Guardian)
- Maui County issued an evacuation advisory (later upgraded to a warning) for Lahaina neighborhoods due to retention basins nearing capacity (ABC, Guardian)
- The state regulates 132 dams across Hawaii, most built for sugar cane irrigation (Guardian)
- The National Weather Service reported 'widespread life-threatening flash flooding' on northern Oahu (ABC, Guardian)
Points of Difference
Details reported by only one source:
- Maui County issued an evacuation advisory (not an order) for Lahaina neighborhoods after retention basins neared capacity (ABC only)
- A shelter at Waialua High and Intermediate School had 185 people and 50 pets evacuated to another center due to flooding (ABC only)
- Parts of Oahu received 200 to 300 millimeters of rain overnight, with Kaala peak getting nearly 400mm in the past day (ABC only)
- The state has said the Wahiawa dam has 'high hazard potential' and a failure would 'result in probable loss of human life' (ABC only)
- The cost of the storm could top $1 billion, including damage to airports, schools, roads, homes, and a Maui hospital (ABC only)
- Evacuation orders covered 5,500 people north of Honolulu (Guardian only)
- The remaining access road out of Waialua is at 'high risk of failure' if rainfall continues (Guardian only)
- Racquel Achiuâs family rescued seven dogs from an elevated kennel in chest-high water (Guardian only)
- The intensity and frequency of heavy rains in Hawaii have increased amid human-caused global heating (Guardian only)
- The 2006 Ka Loko dam collapse on Kauai killed seven people (Guardian only)
Contradictions
Conflicting information between sources:
- ABC reports 4,000 people evacuated while Guardian states 5,500 people were under evacuation orders
- ABC mentions a Maui evacuation advisory (not an order) while Guardian says it was upgraded to a warning
- ABC states no immediate reports of deaths or injuries but Guardian notes 'dozens and perhaps hundreds of homes have been damaged' without full assessment
- ABC says the dam appeared less of a concern the following morning than the 'breadth of hazardous conditions' while Guardian emphasizes the dam's imminent risk
- ABC reports 200-300mm of rain in parts of Oahu overnight while Guardian states 8-12 inches (20-30cm) fell
Source Articles
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