The Stakeholders 1 Tourism Domestic supply Environment River bed incision Hydropower Floods Irrigation Aquaculture Upstream activities Navigation INTERESTS

Hydropower 2 SON LA HOA BINH TUYEN QUANG THAC BA

Hydropower 3

4 The goal of the hydropower stakeholders is to maximize profit.

Only one company (EVN)? Many independent companies ? Which one? One or many companies? Hydropower

Max profit -> max production ? The most simple indicator might be Expected average energy production per year [Kwh/y] However we think that the value of the energy production changes from day to day, even if the selling (administrative) price of energy is not changing overtime. Therefore the production [Kwh/y] is not a suitable indicator.

Expected average energy production per year [Kwh/y] could be weighted differently for different period of the year, because energy has a different value in different period of the year: Max profit -> could be based on weighted sum of daily production ? P t RR : Energy production of Red River system in day t β t : weights to take into account the different value of energy in different period (t) of the year

8  If the import is not null in day t Cost for one Kwh imported saving got by substituting one thermal Kwh with one hydro-generated The value (opportunity price) of one Kwh  If the import is null In 2011 Vietnam has imported the 4.6% of his total energy consumption

expenditure for the energy imported saving got by substituting thermal power with hydropower Annual average cost of lost hydro-power production Energy demand faced by Red River system in day t Energy production of Red River system in day t 9

Floods 10 TUYEN QUANG CITY HANOI PHA LAI

11 Hanoi Floods

12 Hanoi Floods

13 Pha Lai Floods

14 TUYEN QUANG CITY HANOI PHA LAI Floods

15 SON TAY HANOI PHA LAI Why not make reference to Son Tay?

16 Floods: Son Tay -> Hanoi

17 MIKE 11 simulation Floods: Son Tay -> Hanoi

Floods: Son Tay -> Pha Lai

19 MIKE 11 simulation Floods: Son Tay -> Pha Lai

Floods In conclusion: Minimize flood levels in Son Tay? Indicators: Frequency of alarm level overcoming (Hanoi- Pha Lai) Duration of overcoming -> risk of dike break …..

Irrigation 21 Nhue Da Do Thuy Nguyen Vinh Bao Tien Lang An Kim Hai Ngu Huyen Khe Bac Hung Hai Nam Thai Binh Bac Thai Binh Nam Nam Dinh 11 Irrigation districts in the Delta

22 The lowering of the water level in the river and canal network has caused problems for irrigation and MARD has defined mandatory release period during the dry season, in order to reach the target level in Hanoi (2.3 m at Long Bien station). Irrigation

23 Target level 2.3 m Irrigation Hanoi water levels and reservoirs release Hanoi level Hoa Binh Tuyen Quang Thac Ba 2011

Irrigation In conclusion: Satisfaction of 2,3 m at Hanoi. But when? Is it sufficient now, and in the future (bed incision)?

Other water uses 25 Aquaculture Urban and Industries Domestic water in rural area Water for livestock Water for environment (canals) 11 Irrigation districts in the Delta

26 Bac Hung Hai All the water uses in the Delta are accounted for in the estimated water demand, computed for each irrigation district on a ten days base Irrigation Aquaculture Urban and Industries Domestic water for rural area Water for livestock Water for environment Other water uses ????

27 All the water uses in the Delta are accounted for in the estimated water demand, computed for each irrigation district on a ten days base North Thai Binh Irrigation Aquaculture Urban and Industries Domestic water for rural area Water for livestock Water for environment Other water uses

28 All the water uses in the Delta are accounted for in the estimated water demand, computed for each irrigation district on a ten days base All the districts Irrigation Aquaculture Urban and Industries Domestic water for rural area Water for livestock Water for environment Other water uses

29 Irrigation Aquaculture Urban and Industries Domestic water for rural area Water for livestock Water for environment Other water uses: environment The critical issues for environment in the Red river system are related to pollution of water from domestic or industrial sources. The water scarcity of the last years has exacerbated the problem, decreasing the dilution effects, with an environmental crisis in the Nhue Irrigation District. The estimated water demand includes the water for environmental services in the Delta. Other water uses

Water deficit 30 Model of the Delta (MIKE 11)  11 Irrigation Districts  88 Sluice gates  293 (equivalent) pumps

31 Water deficit

Irrigation water uses In conclusion: Total deficit in the year Total deficit in particular periods Crop stress …. As above but separate for each district

River bed incision 33

34 River bed incision is a big issue for the management of the Red- Thai Binh river system. The IMRR project will analyze the effects of reservoirs regulation on this sector through the implementation of a geomorphological model, which could also define future scenarios of river bed incision. Sand mining River bed incision

35 Stability of bridges River bed incision

36 Water supply River bed incision

37 Navigation River bed incision

time evolution 10 – 20 years Indicator: incision of the river bed in critical sections.

Upstream activities 39

40 Agricultural and forestry activities in the upper catchments may affect the water and sediment flow to the reservoirs. There are no specific data about this influence, and stationarity is expected. Upstream activities

Tourism 41 Tourism in Red River and its tributaries has shown its potential and promising room for development, but at present profits from this activity are not relevant and possible indicator should be postponed to further researches.

River environment 42

43 All the interest and uses have an effect on river ecosystem quality. Proposed indicators: 1.Water deficit from a given Minum Environmental Flow in a control section 2.Distance from a reference status (i.e. natural flows without reservoirs) 3.Indicators of Hydrologic Alteration IWARP proposal To be defined River environment

Navigation 44

45 Navigation water requirement can be summarized with a range of levels at the Long Bien station in Hanoi, presently defined as 1.1 meter, as a minimum, and 11.5, as a maximum. A world bank project and other action have planned to modify some streches of the river in order to improve navigation conditions: the project will be consider if and when these activities will influence the sector requirements. Navigation

46 Navigation

47 Navigation

Stakeholders and Sectors 48 Tourism Domestic and industrial supply River Environment River bed incision Hydropower Floods Irrigation Aquaculture Upstream activities Navigation INTERESTSSECTORS R. Environment River bed incision Hydropower Floods Navigation Water supply Winter crop Canal Environment Will not be considered