• 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?

Sny Magill Mound Group

The Sny Magill Unit of Effigy Mounds National Monument preserves at least 106 mounds representing the largest group of mounds in one location found in North America. The Unit contains two bird mounds, three bear mounds, 6 linear mounds and 95 conical mounds including a 2500 year old red ochre mound.