Opinions and Responses

Regarding the Maintenance of the Hirao 4-chome Retention Pond

The Hirao 4-chome retention pond is spacious and includes a pond with spring water flowing inside. Wild birds such as ducks and moorhens live there, and especially the moorhens, which raise their young two to three times a year. Watching them is very charming, making it a relaxing spot for the citizens.
Once a year, a contractor cuts the reeds growing in the pond, but for the past 3 to 4 years, the cut reeds have been left in the pond, causing the pond to gradually shrink. This year, the water surface has become barely visible. If the contractor disposes of the cut reeds, the pond will be revitalized, and I believe more wild birds will return.
I have called the city about twice, but have not received a clear response. Is there any way to restore the pond to a clean state?

Response

The Hirao 4-chome retention pond is a facility that temporarily stores rainwater that would otherwise flow directly into rivers and drainage channels during heavy rain, preventing these rivers and drainage channels from overflowing. Since sediment and other materials flow in along with the rainwater, sediment has accumulated in the landscaping facility (pond) installed within the retention pond, causing the water surface to shrink. Along with this sediment accumulation, reeds have been expanding their natural growth area year by year and are now thriving throughout the entire retention pond.
Regarding the reeds proliferating within the retention basin, the designated manager, Inagi Green Wellness Foundation, trims and collects them around November each year, then removes and disposes of all of them.
From the city's perspective, since the retention basin is a disaster prevention facility designed to prevent flooding damage during heavy rains, we will consider dredging and other necessary measures in the future to maintain its function. At the same time, we will manage and maintain the basin with consideration for the ecosystem, including ducks and moorhens.

Back to the top of opinions and responses