For days in the news you heard....
"I think it's reflective of what you see all over east Hawaii, Four feet of water in three days overwhelmed even the best infrastructure and the best storm drains and plans."
*https://www.accuweather.com/en/weather-news/reports-hurricane-lane-batters-hawaii-with-life-threatening-flooding-dozens-of-landslides/70005881
"Feet of rain and gusty winds have created catastrophic flooding and left thousands without power across Hawaii as Lane tracked dangerously close to the islands."
* http://www.foxnews.com/us/2018/08/23/fema-prepared-with-food-supplies-for-hawaii-ahead-hurricane-lane.html
At a Glance
"Hurricane Lane brought more than four feet of rain and days of flooding to the Big Island.On Kauai, one person was found dead in a flooded stream.More than 20 homes were destroyed in brush fires on Maui Island."
https://weather.com/safety/hurricane/news/2018-08-23-hurricane-lane-impacts-hawaii-honolulu-maui-hilo