Modelling Scenarios for Water Resources Planning WEAP Jordan Model 332019 Water Systems Strategies amp Policies Capacity Building Parts of the presentation 03032019 WEAP concept and the ID: 787491
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Slide1
Arab Water Week 2019
3.3.2019
Modelling Scenarios for Water Resources Planning
WEAP Jordan Model
Slide23/3/2019
Water Systems
Strategies & Policies
Capacity
Building
Slide3Parts of the presentation
03/03/2019WEAP 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)
Slide4WEAP Model
03/03/2019
Slide503/03/2019
Has been developed for more than 25 years by the Stockholm Environment Institute (SEI).
Slide6Main features of WEAP
Type presentation title here03/03/2019
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.
Hydrological
Routine
Groundwater
Routine
Irrigation
Water Demand
Industry
Water Demand
Domestic
Water Demand
Slide7Main features of WEAP
03/03/2019GIS-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.
Slide8Application developed in Jordan
Countrywide Model 03/03/2019
Slide9WEAP Country Wide Model
03/03/2019Demonstrate current water systems of the whole country.Simulates the water transfers within and between governoratesPolicy analysis and planning tool: evaluates a full range of various water planning strategies and scenarios (what if scenarios).
Slide10Countrywide WEAP Model
03/03/2019
Input data are:
Rivers and groundwaters.
Infrastructures: wellfields, dams, network of pipelines.
Domestic Water Demand: population, industry and touristic supply
Irrigation
Demand: crop area, crop water requirements
Slide11Countrywide WEAP Model
03/03/2019
WEAP schematic:
94 Demand Sites
Domestic
Agriculture
Industry
24 GW-Nodes (well fields)
240+ Transmission Links
80 Diversions
22 Main WWTPs
Slide12Domestic Water Demands
03/03/2019
Category
Resolution
Calculation based on
Private Household
District level
Population (Source: DOS)Per-Capita-DemandAmman120 l/c/dUrban 100 l/c/d
Rural 80 l/c/d
(Sources : water allocation policy)
Commercial (small industries,
restaurants
, shops)
District level
Calculated as % of total domestic demand
Tourism
District level
Hotel Beds
Hotel Daily Water Use Rate [l/bed/day]
Hotel Occupancy Rate [%]
Slide13Water Demand for Refugees
03/03/20191.15 million people estimated until end 20152 modes of settlementRefugee 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
Slide14Industrial Water Demand
03/03/2019Top 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
Slide15Agricultural Water Demand
03/03/2019Spatial Resolution: GovernorateSplit between JV and HighlandsDetermining factorsCropped Area (Remote Sensing reports and
JVA)
Crop-Water Demand (FAO, JVA,
MoA
)
Irrigation Efficiency (JVA)
Slide16Water Supply
03/03/2019Water resources:GroundwaterSurface WaterTreated Wastewater
Desalinated Seawater
(to be implemented)
Slide17Wastewater Treatment Plants
03/03/201922 Treatment plantsKey figuresDaily capacityInflowOutflow
Loss in treatment
% of Households connected
Some
WWTPs
provide water for irrigation
Slide18Wellfields and Pipelines
03/03/2019Known abstraction and transferred volumes are used.The following physical parameters can be used:Pipeline diameterPump capacity
Pipe Flow Velocity
Max Pipe Flow
Variation of flow over time [% of max]
Slide19NRW
03/03/2019Physical 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, water
provided free of charge
or illegal connections)
Slide20Results of Scenarios
Country level -Domestic Sector 03/03/2019
Slide21Examined scenarios
03/03/2019Reference 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
Slide22Terms:03/03/2019
Domestic Water Demand: the amount of required water at demand site according to the Allocation PolicySupply Requirement: water demand including physical losses Supply Delivered: the amount of supplied water (Pumped) to demand sites, restricted by the pre-defined supply requirement
Slide23Reference Scenario Results
03/03/2019
Slide24New Resources Scenario (w/o NRW reduction)
03/03/2019
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)
Slide25New Resources Scenario (with NRW reduction)
03/03/2019
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)
Slide263.2 Irbid Governorate
03/03/2019
Slide2703/03/2019
GW supply
31 MCM
Year
2017
Spatial visualisation of the results
(Reference scenario
)
Slide2803/03/2019
GW supply 31 MCM
Wadi Arab project
Phase
2
50 MCM
GW supply
6 MCM
Year 2024
Spatial visualisation of the results (New Resources scenario)
Slide29Volume of water supplied to Irbid ROU from different sources.
03/03/2019
Slide30As
Samra WWTP03/03/2019
Slide31Case of
As Samra WWTP03/03/2019
Slide32Inflow to As Samra WWTP.
03/03/2019
Husban
wells
Shediyyeh & Hasa
Aqaba-Amman Conv. (National)
Slide33King Talal dam scenarios
03/03/2019Capacity of the dam (75 MCM)
We reach more often the capacity of the dam
Smaller capacity
to buffer floods
Slide34Outcomes 03/03/2019
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
).
Slide35Outcomes:03/03/2019
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 governoratesIf the supply is limited (to 70% of the supply requirement), abstraction of groundwater can be reduced in Phase 1, even further in Phase 2.
Slide36Outcomes:03/03/2019
Upgrading As Samra WWTP should be considered while planned projects for water supply is implemented (i.e., Hussban and Shediyyeh-Hasa).A further large upgrade will be required in case Aqaba-Amman
Conveyance project is implemented.
Additional water
stored in King
Talal
Dam could be used increasing irrigated areas in the Jordan Valley to substitute the fresh resources and reallocate these resources for domestic uses.
Slide3703/03/2019
Thank You Q&A
Slide3803/03/2019
Which issues and scenarios would you like to examine with WEAP?
How could
DSS be
useful to support decision making
for water resources planning?