Watershed Management Optimization Support Tool (WMOST)

Watershed Management Optimization Support Tool (WMOST)


Environmental Protection Agency of the United States of America - EPA

Type(s) of Tool

Modelling Tools


Water and Sanitation

Lifecycle Phase(s)

Strategic Planning, Project Planning, Concept Design, Detailed Design, Operation and Maintenance

Open Source


Language Availability


Country of Origin



The Watershed Management Optimization Support Tool (WMOST) is modelling tool that supports decision-making in integrated water management at the local or small watershed scale. The tool models the environmental effects and costs of management decisions at the watershed context, considering water flows and quality. WMOST serves to screen a wide range of potential water resource management options for their cost effectiveness, environmental and economic sustainability, including consideration of different climate scenarios. A theoretical documentation report and a user guide support application.

Tool Outcome

WMOST allows water resource managers and planners to screen a wide range of water resource management options at watershed level. The tool supports decision-making with optimization of costs and sustainability and graphs of modeled stream flows.