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 ToolsSimulate economic, social, and physical systems to help planners optimize outcomes from different decisions.


Natural Infrastructure, Water and Sanitation

Lifecycle Phase(s)

Strategic PlanningPublic authorities identify the needs and long-term vision for infrastructure development., Project PlanningGeneral strategy for a project’s delivery is developed., Concept DesignTechnical experts broadly outline the project’s basic characteristics., Detailed DesignTechnical experts further elaborate the Concept Design., Operation and MaintenanceInfrastructure assets are managed and maintained during their use time.

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.