The Hale Waipuilani project should not be built in a Flood Zone

UPDATE 7/18/22 Thanks to Everyone who testified Today and at the other meetings. The Council voted 6:3 to Support the motion to Disapprove this project. This is a win for the community and for the environment. 🥳😃 Good job and thanks for speaking up for the Aina.


The “Hale Waipuilani” project would be built in a notorious Flood Zone. This is a high-density project designed by mainland architects and planned for a notorious flood zone. The County should not allow more housing to be built in the flood zone, because it will put future residents and neighbors in harm’s way. 

Decades of County neglect have made this low-lying neighborhood in Kihei into a flooding black spot. The County has been aware of flooding for years and knows what it would take to fix the problems, but it has no plans to add the necessary infrastructure such as stormwater drainage to make these areas safe to live in. But the County keeps allowing more development on the flood plains which only makes the flooding situation worse.  

While our community supports truly affordable housing for locals, We are against building more houses in the flood zone. This is possibly the worst place in Kihei to build homes, and there are many better locations. For example, on higher ground.  It will create a hazardous situation for occupants and neighbors. Flooding, Traffic, and Emergency Access are the immediate concerns. This grossly inappropriate project, if approved, will have a negative impact on the neighborhood, community, and the environment. The project would also potentially harm the area’s natural, cultural, & recreational assets. And it will create a safety hazard for the tenants and the surrounding residents. And it is not even affordable for locals. Similar workforce housing projects have sold mostly to newly-arrived mainlanders and sadly most local families do not even qualify. This is a serious problem with the rules that we are trying to change in the future. But meanwhile, developers are taking advantage of this “Loophole”.  

Financial Windfall for Developers: Pushing this project through would mean a huge financial windfall for developers and builders, as it is worth well over 15 million dollars. For-Profit Developers are taking advantage of fast-tracking, county subsidies, and waived fees to build these projects. The County taxpayers end up footing the bill for these, and the for-profit builders end up with a great deal. 

Local Neighborhood flooding on South Kihei Road

This property has a number of problems and is a bad choice of location for many reasons including:

  1. The subject property is located in an SMA.
  2. The property is located in a FEMA Flood Zone.
  3. The property is situated on the Kihei flood plain.
  4. The property is located in the Tsunami inundation zone.
  5. The property is located in a wetland.
  6. The property is a de facto drainage basin
  7. The location has a history of severe flooding.
  8. This area is subject to future sea-level rise.
  9. This location has no stormwater drainage system.
  10. This location is already dangerous for pedestrians.
  11. The surrounding roads have no curbs or sidewalks, or shoulders.
  12. Local roads can flood making pedestrian transit impossible.
  13. Flooding can cut off ingress/egress to this property.
  14. The intersection at Waipuilani and South Kihei Road is a traffic hazard and bottleneck.
Waipuilani Intersection Flooding at Night

The flooding roadways, and traffic problems have been well known for decades. But sadly much-needed improvements to Kihei’s stormwater drainage have been in the planning stages for years, but have never materialized. What is not as well known is that the Waipuilani/South Kihei Rd intersection once had a private stormwater pumping system owned and operated by Maui Sunset Condos, which is now defunct. They even had an agreement with the County to Remove Stormwater from the local streets by pumping with pump trucks. and paying these expenses, But they never followed through on their promises. And now the County taxpayer has to pay for pumping every time there are heavy rains, and stormwater gathers on Waipuilani Road. Private deals and promises from developers cannot be relied upon to solve the area flooding issues. 

Broken stormwater pumping system at Maui Sunset condos, and Broken promises.


Dangerous lack of infrastructure:

The biggest problem currently is that there is no stormwater management system and no drainage infrastructure in place. This area is incapable of accommodating any high-density residential projects safely. Putting a new project in this already flood-prone area puts more people in harm’s way. It also increases the risk to the local population as more people need to be evacuated in an emergency causes delays and stretches the resources of emergency services. The County’s 2016 KDMP Drainage Plan estimates that Kihei needs 133 million dollars in investment in Drainage Infrastructure to address the flooding problems.  But there is money set aside for that, and no plan to move ahead with this. According to testimony from the DPW (Dept of Public Works) representative, the needed drainage improvements for Kihei may be 20 years away. 

There are better-suited places to build this type of project:  This project should be relocated to higher ground, out of the flood zone. Pre-FEMA mistakes of past decades should not be repeated. The Builder admitted that he “didn’t even want to build here”, and that he was only doing this “as a favor for a friend”, and he could just as easily and cheaply build it Mauka of the Highway. The Maui County has even been in discussions with the developer about the possibility of offering them a land-swap for more suitable land near the Kihei Police station, but so far the developer has rejected this offer. 

Aerial view of the property and its surroundings

Problems with this type/style of development:

  • This proposed high-density project is incompatible with the neighborhood.
  • The builders want to change the Zoning Laws to allow for this high-density development. 
  • The proposed 28 units on 1.5 acres far exceed the density of other similar projects.
  • High-density over-development creates more sealed surfaces that are impermeable to rain, reducing the site’s capacity to absorb stormwater, both from within the property and coming from outside. This project would significantly  increase stormwater production and elevate the risk of neighborhood flooding 
  • 59 parking spaces plus internal roads, a large percentage of paved areas, and 8 building’s worth of rooftops will create more rainwater sheeting, leading to significantly increased stormwater production.  
  • According to the developer’s plans, approximately 62 percent or more of the site will be covered or paved over. Adding about 1 acre more hardened surfaces and increasing stormwater production. 
  • The builders have no good plans for how to deal with rainwater or floodwater, and plan to let it soak into the ground.  They have admitted that they cannot stop the stormwater, but they hope to at least make it cleaner. 
  • Putting multiple families inside a narrow bottleneck with limited ingress/egress creates a safety hazard should they need to evacuate quickly in case of fire, flood, or other natural emergencies.
  • This project’s cul-de-sac design and narrow driveways also create an access problem for emergency vehicles as well.
The intersection of Kauhaa Street and South Kihei Road

Many community Groups and Residents have spoken out against this project: The Kihei Community Association has reviewed this project twice, and disapproved of it both times, mainly due to the location in a notorious flood zone, and also the lack of proper drainage solutions.  The Maui Tomorrow Director, Albert Perez has testified that this project should not be built in the Flood Zone. Robin Knox a watershed scientist and project manager for South Maui Wetlands Study, also testified that this development is a bad fit and would harm the area’s wetlands and degrade the watershed. Sierra Club Maui is also against this project.  Over 200 Local Residents have also signed a petition against this project. 

Road Flooding: Many residents are concerned that this will make road flooding worse. And if this project causes more road flooding it will not be approved.

House Flooding: Many Residents fear that this project will make area flooding worse, and stormwater from this site will impact their properties and homes.  According to the Rules, this is not allowed. 

Increased Stormwater Production: The builders have admitted that this project will add almost One Acre of rooftops and impervious surfaces, and increase its stormwater production by around 6,000 gallons per hour, but they intend to let it soak into the ground or will try to keep it on their property. However during the floods, the ground is usually fully saturated, and there could be water flowing across this property. They cannot guarantee that they can keep all their stormwater on-site, and there are no stormwater drains.  When floodwaters build up in this area there is nowhere for it to go. 

FEMA Flood Zone: This property is located in eth FEMA AH Flood Zone that can experience flooding and ponding from 1-3 feet deep. Local residents have experienced many storms and floods, where the water backs up into deep pools and last for days. 


Planned site in wetland flood-zone.


This part of Kihei has a High Water table, that is easily flooded. The water table is usually only a foot or two below the surface, but this gets higher when it rains. In a heavy storm, the water rises up through the ground and creates localized flooding. The high water table also stops stormwater from soaking into the ground, and it can take many days for floods and ponding to recede. 

Because of the many known issues, no exception should be given to current zoning rules. Please do not approve this high-density residential development in a dangerous flood zone. 

Flooding at 16 E Waipuilani Road Kihei, surface runoff flows across the site and causes ponding.

Many Neighbors and local Residents have commented that the local area has bad roads and terrible traffic: The roads here have few sidewalks and no curbs or drains, which creates hazardous conditions for pedestrians. 

Traffic Accidents at the Waipuilani Road intersection


At several Public Meetings with the County the Public has repeatedly testified against the Hale-Waipuilani project:

The main points testified to were,

  • This area is a notorious flood zone. Many local residents came out to explain their experiences with the area’s flooding. And also several experts explained that this site is intended to be built in a wetland zone and was patently flood-prone. Residents explained the area’s topography,  and how it functions as the neighborhood drainage basin. There is no drainage in the area so the water pools up in the lowest elevations and sits stagnant for days.  Floodwaters create an unhealthy situation with waist-deep contaminated stormwater that can make people sick, ruin property and eventually drain into the ocean where it harms the reef. 
  • Building these high-density apartments would increase local flooding problems, and increase public risk during floods. It would cause increased stormwater production that could flow onto neighboring properties, putting neighbors at risk. And it would put more future occupants in harm’s way, and at risk of property loss and economic injury after a flood.
  • This area was difficult to evacuate during a flood or tsunami or another emergency due to narrow roads and lack of organized transport infrastructure. This area is in the tsunami evacuation zone, and sees frequent flooding. This area has bad traffic that reduces the ability of emergency vehicles to respond quickly. And the project design and size make it difficult to evacuate also, especially with the lack of pedestrian access.  The area’s narrow streets already have excessive traffic, and overflow parking from similar projects currently clogs the streets. This project would increase overflow street parking making Kauhaa street into a one-lane road. And the site’s lack of sidewalks and street parking force pedestrians to walk on the roadways. 
  • These Homes would not even be affordable to local families. These homes would be bought by mainlanders and not Maui local families. testifiers said that only 28 percent of Maui families can qualify for a mortgage. and most of the people on the waiting list for homes do not qualify for these homes. because they make less than the minimum income required for these units.  Another testifier said that more than half of the homes on similar projects went to locals. and they do not stay in the workforce affordable category. Other workforce houses were quickly converted to investment homes, did not alleviate the housing problem, and may actually contribute to the housing problem. Many people testified that these units were undersized and overpriced, and would not be practical to live in or appropriately sized or designed for the number of people that would be required to pay for the mortgage. 
  • Cultural Experts too testified that this site is in a sensitive area that would require a detailed Archeological study to assess and inventory the site, and also to evaluate the potential harm to local cultural and archeological sites. 

We shouldn’t be building more houses in Kihei’s worst flood zone:   There are better places to build housing away from flood plains and coastal hazards. Kihei has an aging infrastructure, bad traffic, and a lack of area drainage. The local area surrounding this specific project has no drainage and is known to flood. 

The Kihei Drainage master Plan states that:   “The intersection of East Waipuilani Road and South Kihei Road is the low spot of South Kihei Road. Water is unable to drain efficiently during heavy rainfall because the local drainage system is not designed to cope with large runoff. Pumping is required to take out the water. The segment of South Kihei Road from West Waipuilani Road to West Lipoa Street has almost a level slope and is flooded during heavy rainfall”.  (KDMP-2016  66/388)


The development will increase Stormwater Production: The Hale Waipuilani development would add approximately One Acre more of stormwater producing surfaces. The combined area of Roof, Driveways, and other impervious surfaces that will produce stormwater is about an acre. This represents a significant change to existing drainage and flooding conditions.  The proposed drainage calculations estimate approximately 6,000 gallons/hr will be added to the local stormwater loads.

The Planned Drainage System will not work:  Several people including drainage experts and architects have testified that the planned under-ground, under-building drainage retention will not work. The proposed method of stormwater disposal relies on the percolation of stormwater into groundwater using narrow perforated pipes in underground storage ponds. This type of system is known to be high maintenance and quickly loses its effectiveness if not properly maintained. 

Underground Storage System:  This area site is within the FEMA AH flood zone with 1-3 feet of surface ponding. So any stormwater detention holding “tanks” would need to be placed above the 3-foot flood height. Any underground storage system would not work during anticipated storms with 3-foot deep ponding and surface flooding.  

Underground percolation will not work with rising water tables:  The proposed underground “perforated-pipe retention ponds” would not work in the event of rising groundwater. Prolonged rain events such as Kona Storms can last several days, and typically saturate the ground and bring water tables to the surface.  So the proposed underground drainage solutions would likely fail at the worst possible times during a Kona Storm flooding event.  

The worst storms are yet to come:  We have not seen a 100-year storm in our lifetimes. All of Kihei’s worst storms in the last three decades or more have not reached the anticipated 100-year storm threshold. Even though many storms are extremely severe and property is damaged, the biggest storms are yet to come.   

The Hale Waipuilani project should not be approved:  We should not put more housing in the flood zone. This area has multiple risk factors and there are many better locations to build affordable homes.

There are 2500 Affordable homes in the pipeline:  Maui currently has 36 Affordable Housing projects in the works and according to Mayor Victorino (editorial re Affordable Housing Maui News 4/30/22), there are 2,500 affordable homes in the pipeline. 

Disapproving will have a negligible impact on Affordable Housing:  Disapproving this 28-unit project will have a negligible impact on Maui’s affordable housing and represents only about 1 percent of affordable housing in the pipeline. 

A land swap deal is the best option:  Maui County currently doesn’t have the 133 million dollar budget to fix drainage Infrastructure to make Kihei safe from flooding. But the County does have land. The County has land available at the Kihei Police Station, at Maui Lani, and in the central valley near Pu’unene. Any of these areas are far better suited for housing, and are free from the flooding, and coastal hazards of tsunami, sea level rise, and climate change.

The County needs to protect Kihei:  Kihei cannot accommodate more traffic, or more housing in flood zones, so we need to reduce development on the flood plain, and encourage a retreat from the shoreline. Urban areas and new housing should be on higher ground, and far from known flood zones. Only the County has the power to make the decisions necessary to make this happen. 

The best use of 16 E Waipuilani is Conservation: 

  • This site should be placed into conservation. This is one of the area’s last remaining open spaces. And it is part of the local watershed and wetland nexus.
  • Keeping this lot as conservation helps the County to meet its goals of Open Space preservation, from the MIP, and KMCP Community Plan, as well as achieve the goals of shoreline retreat as recommended in CARE Committee and Multiple studies. 
  • Also, this action helps us to depopulate and relocate the Kihei flood zone, and was recommended by David Goode. 
  • Conserving this lot at 16 E Waipuilani Road will help to stabilize the degraded watershed, and will help preserve the site’s beneficial function as the area’s de facto drainage basin. 
  • This also helps the County towards its goal of designating and acquiring land for “green drainage infrastructure”, as recommended in the SMWP, and the KDMP. 

Keep the property as is:  Preserving this lot as is, has many benefits and will not overburden the local community or its aging infrastructure. The site’s original historic house can remain, and continue to provide housing. The open space and undeveloped land, can continue to provide beneficial services. The site’s uncompacted Jaucus and Loamy sand soils can continue to function as a settling area for neighborhood floodwaters, and the site’s native vegetation can be encouraged to provide ground cover and habitat for native species. Other possible uses could include becoming an urban nature park or a community garden.