Events / Activities

Technical Visit to DSD Happy Valley Underground Stormwater Storage Scheme

Date, time & venue

2018-04-21;9:30 am to 11:30 am;Happy Valley Recreation Ground, Sports Road, Happy Valley, HK


Programme Highlights:


To alleviate flood risk in Wan Chai and Happy Valley area, DSD commenced the Happy Valley underground stormwater storage scheme (HVUSS) in 2012.  The scheme, which included the construction of a 60 000 m3 stormwater storage tank and box culvert under the Happy Valley racecourse, is to provide flood attenuation in the Happy Valley catchment during severe rainstorms of intensity up to that of a 1 in 50 years rainstorm event.  The first phase of the project was completed in 2015 while the second phase of the project had been put into operation in end 2017.


The HVUSS is the first flood storage tank with “Movable Crest Weir” in Hong Kong.  With the “Supervisory Control and Data Acquisition” (SCADA) system, the overflow weir system is controlled according to the real-time tidal level, water levels inside the storage tank as well as the flow of stormwater at the upstream and downstream of the box culvert. This allows overflowing of stormwater from the box culvert to the tank to be invoked at the optimal time.


The visit will introduce the project background, daily operations, management methods of the facility.   It is also aimed to understand the innovative technologies and sustainable design concept of the project, with an on-site walk-through visit - if weather permits - to the underground stormwater storage tank with capacity of 60,000 m³.



The visit is free of charge to HKIE members. The number of participants will be limited to 30 based on a first-come-first-served principle; however, priority will be given to the members of the Electrical Division.  Separate email notification will be sent to successful applicants after the enrolment deadline.  Details of the visit will be advised to the successful applicants.  If you wish to join this technical visit, please register online at before 14 April 2018. Successful applicants will be notified individually.  For enquiries, please contact Ir Andrew Yan via Email:  Neither the Institution nor any other parties facilitating this visit accepts any liability whatsoever in connection with the visit.





  Home | Contact Us | Copyright | Privacy Policy | Disclaimer | SitemapAdmin
Copyright ©2008 The Hong Kong Institution of Engineers. All rights reserved.