WEAP%20Water%20Evaluation%20

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WEAPWater Evaluation Planning
Systemwww.weap21.orgweap_at_tellus.org
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WEAP Highlights

• Integrated water resources planning system.
• GIS-based, graphical drag drop interface.
• Basic methodology physical simulation of water
  demands and supplies.
• Additional simulation modeling user-created
  variables and modeling equations.
• Scenario management capabilities.
• Links to spreadsheets other models

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WEAP Capabilities

• Can do
• High level planning and strategic analysis at
  local, national and regional scales
• Demand management
• Water allocation

• Cannot do
• Daily operations
• Least-cost optimization of supply and demand

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Examples of Analyses

• Sectoral demand analyses
• Water conservation
• Water rights and allocation priorities
• Groundwater and streamflow simulations
• Reservoir operations
• Hydropower generation
• Pollution tracking
• Ecosystem requirements

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Selected Projects

• California
• Impacts of climate change and other stressors on
  ecosystem services
• Volta and Syr Darya
• Food and environmental security
• China
• Providing a basis for cooperation/negotiation
  between Beijing and upstream water users
• South Africa
• Moving towards equity in water use

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Adaptation
WEAP for Vulnerability

• Alternative baseline scenarios can examine
  vulnerability of water supplies to different
  demographic, technological, climatalogical/hydro
  logical futures.

• Alternative policy scenarios can explore demand
  and supply management options for adapting to
  future vulnerability.
• Implications for the multiple and competing
  demands on water systems.
• Implications of policies can be evaluated
  (ability to meet water needs, hydropower
  availability, pollution loadings, costs, etc.)

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Schematic View
Click and drag to create a new demand site
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Data View
Data is displayed numerically and graphically
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Results can be displayed in wide range of formats
and scales
Results View
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Overviews
Favorite charts can be selected to give quick
overviews
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Sectoral Water Demands
Irrigation
Ecosystems
Livestock
Domestic
Total Water Demand
Mining
Commercial
Industrial
Major Cities
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Illustrative Demand Structure
SECTOR
SUBSECTOR
END-USE
DEVICE
Furrow Sprinkler Drip Standard Efficient ... K
itchen Bathing Washer Toilet ...
Agriculture Industry Municipal
Irrigation ... Cooling Processing Others Sing
le Family Multi-family ...
Cotton Rice Wheat ... Electric
Power Petroleum Paper ... South City West
City ...
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Supplies

• Rivers
• Groundwater
• storage capacity
• maximum monthly withdrawal
• natural recharge
• Diversions (e.g. canals, pipelines)
• Reservoirs
• Other (e.g. desalination)

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Hydrology

• Read-from-File Method
• Historical or synthetic data, imported from data
  files

• Water-Year Method
• Create a series of water year types from very
  dry through normal to very wet (5 types).
• For each scenario year specify its type.
• Use to examine alternative climate scenarios.

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Hydropower
Capacities, efficiencies, and other properties of
power generation
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Priority Allocation of Water Resources

• Supply Priorities
• Demand Preferences

• Allocation Order

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Network
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WEAP System Requirements

• Windows 95 or later
• 32 MB of RAM (64 MB suggested)
• Imports from/exports to Excel and Word (not
  required).
• Uses standard ArcView GIS shape files. ArcView
  is not required.

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Availability

• Evaluation version available at no charge (CDs
  available here) or download from
  http//www.weap21.org
• Full version requires license, available from
  SEI-Boston.
• Email weap_at_tellus.org
• Training is needed for majority of users,
  available from SEI-Boston.