About Us

The People in Ecosystems/Watershed Integration (PEWI) tool is a simple web-based educational game designed to assist people in multidimensional land-use decision making. PEWI is an open-source project that can be utilized in classrooms and by land-managers or resource professionals to explore how different land cover types and configurations result in trade-offs in ecosystem services.  

To learn more about how to use PEWI, watch this brief video tutorial (2 min), this more comprehensive video tutorial (5 min), or download the PEWI User Guide.

To use the tool, click here.

Questions about PEWI? Email pewi@iastate.edu.


PEWI, or People in Ecosystems/Watershed Integration, is a simple web-based learning tool to help people understand human-landscape interactions and ecosystem service tradeoffs. PEWI addresses our need to balance agricultural production with other environmental benefits, including clean water, abundant wildlife, and recreation, among others. While PEWI focuses on the US Corn Belt, its lessons can apply to agricultural regions globally. 

To ensure the constant improvement and widespread availability of PEWI, we have made the tool open source and offer multiple opportunities to collaborate.  To learn more about how to contribute to the science or code that drives PEWI, visit our Collaborate page.  To download lesson plans that incorporate PEWI, visit our Lesson Plans library. Email pewi@iastate.edu with questions and feedback for the development team.