Ir. Richard LEUNG Drainage Services Department 16 Jan 2020

Hong Kong 2020 International Urban Forestry Conference 1 Beijing 600 Seoul Vancouver 1200 1300 Tokyo 1500 2400 Taipei 2100 San Francisco 600 Bangkok 1500 Manila 2200 Singapore 2200 Jakarta 1700

Sydney Santiago 300 1200

High Annual Rainfall Source: 2 http://worldweather.wmo.int/en/home.html 1989 3 Channelisation

Good hydraulic performance

4 Flooding Blackspots

90

6

2019 1995 2019

5 6 , Fo Tan, Jordan Valley Grey Anderson Road Quarry From to Yuen Long Town Nullah River Park Blue-Green Tsui Ping River

Revitalisation Study Kai Tak River

Eco-hydraulic study –site trials Shenzhen River Practice Note – Environmental and Ecological Considerations of River Design

Eco-hydraulic study Lam Tsuen River

Ho Chung River Practice Note – Environmental Considerations of River Design Concrete Yuen Long Bypass Floodway Channels

Ng Tung River

7 Green Rivers

8 Ng Tung River (1997 – 2000)

8 Green and Ecological Rivers

Yuen Long Bypass Floodway

9

9 Green and Ecological Rivers

10

Upper Lam Tsuen River

10 Revitalization of water bodies?

Efficient Drainage

Ecological Greener value Multiple Functions environment of Drainage Facilities (Co-use of land)

Water Community friendliness environment

11 2015 Policy Address 2017 Policy Address

Adopt the concept of Review and evaluate the revitalising water bodies revitalisation potential of the large–scale drainage major nullahs in Hong Kong improvement works and planning drainage networks Identify suitable nullahs for for New Development Areas revitalisation

12 2019 Policy Address

13 First Urban Green River Corridor (2018)

Kai Tak River 14 Tsui Ping River

– Walkability and Connectivity

15 Jordan Valley Nullah – Landscaping Enhancement

16 – River Oasis

17 – River of Art

18 Flood Lake Park

(Development of Anderson Road Quarry Site by CEDD) 19 – First River Park (Tung Chung New Town Extension by CEDD)

20 Lower Lam Tsuen River

Eco-hydraulic Site Trials

Before

After https://www.dsd.gov.hk/EcoDMS/TC/Home/Home.html

22 Live with Rivers

Thematic Planting Event or carnival

Pet Garden

Picnic Educational Tour

23 Collaboration

Annual DSD R&D Forum

Green Groups Collaboration Academic Gathering 3324 24 DSD endeavours to adopt blue green infrastructure designs

Thank you

25