1. General Model Information

Name: Water Evaluation and Planning System

Acronym: WEAP

Main medium: aquatic
Main subject: hydrology,Water Allocation
Organization level: Socio-Ecosystem
Type of model: static-algebraic equations
Main application: decision support/expert system, research
Keywords: water allocation scenarios demand planning


Jack Sieber
Stockholm Environment Institute-Boston
11 Arlington Street/Boston, MA 02116-3411

Phone: +1 617 266 8090
Fax: +1 617 266 8303
email: jsieber@tellus.org
Homepage: http://www.seib.org/weap



WEAPİ is a microcomputer tool for integrated water resources planning. It provides a comprehensive, flexible and user-friendly framework for policy analysis. A growing number of water professionals are finding WEAP to be a useful addition to their toolbox of models, databases, spreadsheets and other software. This introduction summarizes WEAP's purpose, approach and structure. A detailed technical description is available in a separate publication, the WEAP User Guide.

Many regions are facing formidable freshwater management challenges. Allocation of limited water resources, environmental quality and policies for sustainable water use are issues of increasing concern. Conventional supply-oriented simulation models are not always adequate. Over the last decade, an integrated approach to water development has emerged which places water supply projects in the context of demand-side issues, water quality and ecosystem preservation.

WEAP aims to incorporate these values into a practical tool for water resources planning. WEAP is distinguished by its integrated approach to simulating water systems and by its policy orientation. WEAP places the demand side of the equation

on an equal footing with the supply side WEAP is a laboratory for examining alternative water development and management strategies.

WEAP is comprehensive, straightforward and easy-to-use, and attempts to assist rather than substitute for the skilled planner. As a database, WEAP provides a system for maintaining water demand and supply information. As a forecasting tool, WEAP simulates water demand, supply, flows, and storage, and pollution generation, treatment and discharge. As a policy analysis tool, WEAP evaluates a full range of water development and management options, and takes account of multiple and competing uses of water systems.

II. Technical Information

II.1 Executables:

Operating System(s): Windows 95 and later, NT and later
see at http://www.seib.org/weap/

II.2 Source-code:

Programming Language(s): Delphi
see at http://www.seib.org/weap/

II.3 Manuals:

WEAP User Manual

II.4 Data:

see WEAP User Manual

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

V. Further information in the World-Wide-Web

Water Evaluation and Planning System

VI. Additional remarks

Last review of this document by: Thu May 2 20:48:09 2002
Status of the document: Contributed by Eric Kemp-Benedict
last modified by Tobias Gabele Wed Aug 21 21:44:52 CEST 2002

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