• A quiet summer walk through the Marching Bear Group of effigy mounds

    Effigy Mounds

    National Monument Iowa

Inventory and Monitoring

Restored Tallgrass Prairie

Effigy Mounds Restored Tallgrass Prairie

NPS Photo

Inventory and monitoring (I&M) builds a strong scientific foundation for the management and protection of natural resources in national park areas.



Effigy Mounds National Monument is a member of the Heartland Inventory and Monitoring Network, fifteen parks in the Midwest that share resources and professional expertise to inventory and monitor natural resources.



To verify records of which plants and animals live in the parks, teams of scientists from parks and universities inventory plants, mammals, birds, fish, and reptiles. Park managers use this data to monitor the vital signs--measurable, early warning signals of significant changes--to assess the long-term health of natural systems.

Did You Know?

Great Bear Effigy Mound Group

In 1880, Alfred J. Hill and Theodore H. Lewis formed the Northwestern Archeological Survey for the purpose of surveying mounds in the Upper Mississippi Valley. Lewis spent eleven field seasons in Iowa and was the first to map mounds in the present Effigy Mounds National Monument.