Preserving Green Spaces in the South Maui Floodplain

The Importance of Preserving Green Spaces in the South Maui Floodplain


The preservation and maintenance of green spaces in the South Maui floodplain are of paramount importance. These spaces play a crucial role in watershed management, stormwater management, and environmental conservation. This article explores the significance of these spaces and the need for their preservation.


South Maui, located on the island of Maui in Hawaii, is known for its beautiful landscapes and rich biodiversity. However, the region is also prone to flooding due to its geographical location and topography. The floodplain in South Maui is home to numerous green spaces and gulches, which play a vital role in managing these floods and preserving the local environment.

Role of Green Spaces

Green spaces, which include parks, gardens, and other vegetated areas, contribute significantly to the biodiversity of the region. They serve as habitats for various species of flora and fauna, many of which are endemic to Hawaii. These spaces also enhance the aesthetic appeal of the region, making it a popular destination for tourists and locals alike.

In the context of flood management, green spaces act as natural buffers, absorbing excess rainwater and reducing the speed at which water flows over the land. This absorption capacity helps to mitigate the impact of floods, protecting local communities and infrastructure.

Watershed Management

Watersheds in South Maui, such as Hapapa, Wailea, and Mo’oloa, cover extensive areas and include several drainage basins. These watersheds play a critical role in managing water resources in the region. They collect rainwater, filter it through the soil, and direct it towards the ocean. This process helps to maintain the water cycle and ensures a steady supply of fresh water for the local ecosystem.

However, these watersheds are vulnerable to pollution and degradation, primarily due to human activities. Sediments, nutrients, and pathogens can enter the watersheds during stormwater events, affecting water quality and harming aquatic life. Therefore, preserving green spaces within these watersheds is crucial for maintaining their health and functionality.

Stormwater Management

Stormwater management is another area where green spaces prove invaluable. The Hawaii Department of Transportation (HDOT) has implemented a Storm Water Management Program to prevent stormwater pollution. This program emphasizes the importance of small actions, such as recycling and changing car washing methods, in preventing pollutants from entering the storm drain system.

Green spaces contribute to this effort by acting as natural filters for stormwater. They absorb rainwater, allowing it to percolate through the soil and remove pollutants before it reaches the storm drain system. This process helps to improve water quality and protect marine life.


The preservation of green spaces in the South Maui floodplain is not just beneficial but essential. These spaces play a vital role in managing floods, preserving watersheds, and preventing stormwater pollution. Therefore, efforts should be made to protect these spaces and promote their growth. By doing so, we can ensure the sustainability of South Maui’s environment and the well-being of its inhabitants.


: Green spaces in Hawaii : Watershed management in South Maui : HDOT’s Storm Water Management Program

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