Kashio River right bank trunk line and Sakae Daini Water Reclamation Center discharge culvert / 4th pump facility maintenance project

　This project aims to reduce the flood damage and implement a smooth reconstruction of pumping stations by networking the Tozuka pumping station and Kasama pumping station with new trunk lines, taking rainwater from the Tozuka pumping station and Kasama pumping station to the new main line, and constructing a new pumping facility at the Sakae Daini Water Reclamation Center site.

Last updated on March 13, 2025.

Overview

Basin Overview Map

≪Outline of the facility (planned)≫
　New trunk line
　　Inner diameter: φ4,500mm extension: Approx. 2.7 km depth: About 25m to 30m
　　Inner diameter: φ3,500mm extension: Approx. 3.7 km depth: About 25m to 30m
　New pump facility
　　Facility scale: Approximately 25.0m wide x 130.0m long x 40.0m underground depth / 20.0m ground height　
　　Drainage capacity: Approx. 9.0m3/s (rainwater)
　　Pumping capacity: Approx. 2.9m3/s (sewage)

　Click here for details.
　　Plan drawing (draft) (PDF: 12,468KB)

Evaluation of public works projects

　Regarding public works carried out by the city, at each stage from the start of the project to the completion after completion, by objectively evaluating and publishing the necessity and effects of the project, the efficiency of public works and the transparency of the implementation process There is a public works evaluation system aimed at improving the quality.
　For this project, a preliminary evaluation of the planning stage was conducted in FY2020.
　Please confirm from the following links about summary of public works evaluation system, prior evaluation record of this business, citizen opinion and opinion for citizen opinion.

Yokohama City Public Works Evaluation

2020 Yokohama City Public Works Evaluation

Preliminary Evaluation Report (PDF: 1,551KB)

Opinion for citizen opinion and opinion for citizen opinion (PDF: 101KB)

You may need a separate PDF reader to open a PDF file.
If you do not have it, you can download it free of charge from Adobe.
To download Adobe Acrobat Reader DC