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Shenzhen River Regulation Project

Shenzhen River is the boundary river between the Hong Kong Special Administrative Region (HKSAR) and the Shenzhen Special Economic Zone.  It originates near Nuweling of the Wutong Mountain, flowing from northeast to southwest into Deep Bay. The total length of Shenzhen River is 37 km, with a catchment area of 312 km2.  It is the drainage outlet of Ng Tung River, Ping Yuen River and the San Tin streams on Hong Kong side as well as that of Shawan River, Buji River and Futian River on Shenzhen side.  Regional flooding in these river catchments was frequently threatening the public safety and properties on both sides of the Shenzhen River.

The Government of HKSAR and the Shenzhen Municipal Government are determined to regulate the Shenzhen River.  A Joint Working Group on Regulation of the Shenzhen River has been set up to oversee the project implementation.  The Drainage Services Department worked closely with the Shenzhen side in the planning, design and construction of the project.  While the main objective of the project is flooding prevention, it has also other associated benefits such as improving the river environment and navigation.

Three stages of river regulation project have been completed straightening, widening and deepening the previously 18 km of Shenzhen River into 13.5 km of new river channel:

Stage I : Straightening of the Lok Ma Chau bend and the Liu Pok bend;

Stage II : Widening and deepening of the remaining sections from Liu Pok bend to the estuary; and

Stage III : Widening and deepening of the section upstream of the Liu Pok bend to the confluence with the River Ganges. 

Stage I and Stage II works of the Shenzhen River Regulation Project are the most critical flood mitigation projects in the Northern New Territories.  They cost about HK$300 million and HK$850 million, and were completed in 1997 and 2000, respectively. The new river channel is 9.5 km long.  The flow capacity of Shenzhen River from Lo Wu to its estuary at Deep Bay has been significantly increased and, together with other river training works in the upstream, have basically eliminated the regional flooding in the North New Territories. 

The Shenzhen River Regulation Project Stage is divided into two phases. Phase I covers the advance works for the reconstruction of border roads and fences.  The river training works under Phase II are divided into 3 contracts, which  involve river dredging, channel straightening, construction of river embankments, channel lining protection works, reconstruction or strengthening of 5 bridges (Lo Wu Railway Bridge, old footbridge, Man Kam To Bridge, etc.), improvement works to Dongjiang-Shenzhen watermains, environmental improvement works and landscaping works. The project costs about HK$650 million and the new river channel is 4km long.

Upon the successful implementation of Shenzhen River Regulation Project (Stage I to III), Shenzhen River has been straightened, widened and deepened, and is no longer a narrow and sinuous river covered by wild vegetations.  The trained Shenzhen River section has a flood protection level of a one-in-50 year return period.

Shenzhen River Before and After River Training

       Before River Training

After River Training
 羅湖  Lo Wu
Lo Wu   
 圓嶺仔  Yuen Leng Chai
Yuen Leng Chai  
 文錦渡橋上游  Upstream of Man Kam To Bridge
Upstream of Man Kam To Bridge   
 平源河匯流處  Confluence with Ping Yuen River
Confluence with Ping Yuen River   

Shifting and Preservation of Lo Wu Railway Bridge

The training of the Shenzhen River requires the reconstruction of the old Lo Wu Railway Bridge.   Because of its high historical value that could be traced back to 1945, both Governments decided to preserve the Lo Wu Railway Bridge at the site adjacent to the river and the Lo Wu Railway Station so that people can have a view of the bridge that recalls their old memory.

A system of pulley and trolley was used to shift the old Lo Wu Railway Bridge to its final position.  This construction method enabled the whole Bridge to be preserved in its original form without causing any damage.

 羅湖鐵路橋夜景 Lo Wu Railway Bridge at night  安放在深圳河邊的舊羅湖鐵路橋 Preserved Lo Wu Railway Bridge
Lo Wu Railway Bridge at night Preserved Lo Wu Railway Bridge 
 羅湖鐵路橋的遷移過程 Shifting of Lo Wu Railway Bridge
 Shifting of Lo Wu Railway Bridge  


Shenzhen River Regulation Project Information

Shenzhen River Regulation Project

Construction Cost (HK$ million)

Commencement Date

Completion Date

Stage I




Stage II, Phase I (HK side)




Stage II, Phase II, Contract A




Stage II, Phase II, Contract B




Stage III, Phase I (HK side)




Stage III, Phase II, Contract A




Stage III, Phase II, Contract B




Stage III, Phase II, Contract C