Home owners and concerned residents of Manoa, Palolo and Makiki packed the Manoa Valley District Park gym Tuesday night, hoping to get answers from city, state and federal officials on a multimillion dollar plan called the "Ala Wai Flood Risk Management Project."

And they weren't quiet observers.

After presentations from representatives from the U.S. Army Corps of Engineers, Honolulu's Department of Emergency Management, the city's Design and Construction Department and others, residents took to the mic to share their thoughts. 

Among the large number of concerns, many felt the planners didn't provide enough information about the project early on. Others said they were worried and upset over the future of their homes. 

Not only do the plans call for work around the Ala Wai Canal to prevent possible flooding in Waikiki, but six proposed debris or detention basins and other installments will be built throughout the valleys to stop water and debris from running down the watershed into the canal in the event of a storm.

Construction work would affect 37 private properties, four of which possibly would need to be acquired entirely.

Plans are still in the design feasibility phase. 

The federal government appropriated $345 million toward the project. Hawaii Governor David Ige identified $125 million from the state's budget for the project. The maintenance and upkeep of the new facilities would fall on the city's shoulders.