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Arab Water Week 2019 3.3.2019

This presentation introduces the WEAP concept and its application in Jordan's water resources planning. It discusses the results of the CW model for the domestic sector at the country and governorate levels. The WEAP model, developed by the Stockholm Environment Institute, simulates both supply and demand using natural and anthropogenic processes. It offers a GIS-based interface and can be coupled with other models for comprehensive analysis.

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Arab Water Week 2019 3.3.2019

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  1. Modelling Scenarios for Water Resources Planning WEAP Jordan Model Arab Water Week 2019 3.3.2019

  2. Water Systems Strategies & Policies Capacity Building

  3. Parts of the presentation WEAP concept and the application developed for Jordan (CW model) Results of CW model for Domestic Sector Country and Governorate levels (i.e. Irbid and As Samra WWTP)

  4. WEAP Model

  5. Has been developed for more than 25 years by the Stockholm Environment Institute (SEI).

  6. Main features of WEAP Integrated water resources planning system: • natural processes: hydrological and groundwater modelling; • anthropogenic processes: water demands, dams, pipeline, canal systems etc.; • simulation of both supply and demand. HydrologicalRoutine IrrigationWater Demand IndustryWater Demand GroundwaterRoutine DomesticWater Demand Type presentation title here

  7. Main features of WEAP GIS-based, graphical drag & drop interface. Number of built-in routines (ex. plant growth, water quality and financial analysis) and functions. User-defined variables. Strong scenario management functionality for medium to long term analysis. Can be coupled with other models: • Groundwater flow model: MODFLOW. • Surface water quality model: Qual2K. • Socio-economic model: MYWAS.

  8. Application developed in JordanCountrywide Model

  9. WEAP Country Wide Model • Demonstrate current water systems of the whole country. • Simulates the water transfers within and between governorates • Policy analysis and planning tool: evaluates a full range of various water planning strategies and scenarios (what if scenarios).

  10. Countrywide WEAP Model WEAP schematic: • 94 Demand Sites • Domestic • Agriculture • Industry • 24 GW-Nodes (well fields) • 240+ Transmission Links • 80 Diversions • 22 Main WWTPs

  11. Domestic Water Demands

  12. Water Demand for Refugees 1.15 million people estimated until end 2015 2 modes of settlement • Refugee camps • 5 camps with total capacity of 115.000 people • Water provided by tankers or wells (35 l/cap/day) • Refugees in host communities • Like “regular” population • Most refugees settle in urban centres in north Jordan

  13. Industrial Water Demand Top water consuming industries with fixed amount of water are entered as individual Demand Sites (e.g. potash, oil shale….etc.) All other industries covered by commercial demand

  14. Agricultural Water Demand Spatial Resolution: Governorate Split between JV and Highlands Determining factors • Cropped Area (Remote Sensing reports and JVA) • Crop-Water Demand (FAO, JVA, MoA) • Irrigation Efficiency (JVA)

  15. Water Supply Water resources: • Groundwater • Surface Water • Treated Wastewater • Desalinated Seawater(to be implemented)

  16. Wastewater Treatment Plants 22 Treatment plants Key figures • Daily capacity • Inflow • Outflow • Loss in treatment • % of Households connected Some WWTPs provide water for irrigation

  17. Wellfields and Pipelines Known abstraction and transferred volumes are used. The following physical parameters can be used: • Pipeline diameter • Pump capacity • Pipe Flow Velocity • Max Pipe Flow • Variation of flow over time [% of max]

  18. NRW Physical Losses: water lost in the transmission between the bulk water supply and the meter (50% of NRW) Administrative Losses:water not billed butactually consumed(e.g. no meter, waterprovided free of chargeor illegal connections)

  19. Results of ScenariosCountry level -Domestic Sector

  20. Examined scenarios Reference scenario: • Current situation (2017). • Demographic growth. • Projects under implementation (ex. Wadi Arab phase 1). New Resources: • Major projects according to CIP the (ex. Desalination projects , Wadi Arab phase 2). • Expansion of WWTPs and connections according to CIP and National Wastewater Master Plan. • Reduction in NRW according to the Water Reallocation Policy

  21. Terms: Domestic Water Demand: the amount of required water at demand site according to the Allocation Policy Supply Requirement: water demand including physical losses Supply Delivered: the amount of supplied water (Pumped) to demand sites, restricted by the pre-defined supply requirement

  22. Reference Scenario Results

  23. New Resources Scenario (w/o NRW reduction) • Compared with Ref. • In 2029: • No Change in supply requirement • Increase in supply delivered by 30% (153 MCM) • Reduction of unmet demand by 55%(152 MCM)

  24. New Resources Scenario (with NRW reduction) • Compared with Ref. • In 2029: • Reduction in supply requirement by 9% (70 MCM) • Increase in supply delivered by 26% (127 MCM) • Reduction of unmet demand by 71%(197 MCM)

  25. 3.2 Irbid Governorate

  26. Spatial visualisation of the results (Reference scenario) Year 2017 GW supply 31 MCM

  27. Spatial visualisation of the results (New Resources scenario) Year 2024 Wadi Arab project Phase 2 50 MCM GW supply 31 MCM GW supply 6 MCM

  28. Volume of water supplied to Irbid ROU from different sources.

  29. As Samra WWTP

  30. Case of As SamraWWTP

  31. Aqaba-Amman Conv. (National) Shediyyeh & Hasa Husban wells Inflow to As SamraWWTP.

  32. King Talal dam scenarios We reach more often the capacity of the dam Smaller capacityto buffer floods Capacity of the dam (75 MCM)

  33. Outcomes Although the optimistic scenario can improve further the coverage of domestic water, however, some governorates do not reach allocation targets by year 2030. Applying reduction NRW to ~40% save around 48 MCM by 2030, more useful in some governorates (i.e., Balqa and Ma’an).

  34. Outcomes: Wadi Al Arab Phase 1: improve the supply almost 100% of requirement of Irbid ROU in year 2030. Phase 2 of Wadi Al Arab can be useful: • to reduce the amount of GW abstraction currently supply Irbid ROU, and/or • to keep the same amount of GW abstraction for other districts in Irbid and North governorates If the supply is limited (to 70% of the supply requirement), abstraction of groundwater can be reduced in Phase 1, even further in Phase 2.

  35. Outcomes: Upgrading As SamraWWTP should be considered while planned projects for water supply is implemented (i.e., Hussbanand Shediyyeh-Hasa). A further large upgrade will be required in case Aqaba-Amman Conveyance project is implemented. Additional water stored in King TalalDam could be used increasing irrigated areas in the Jordan Valley to substitute the fresh resources and reallocate these resources for domestic uses.

  36. Thank You Q&A

  37. Which issues and scenarios would you like to examine with WEAP? • How could DSS be useful to support decision making for water resources planning?

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