St. Louis District
Historically, Piasa and Eagle's Nest Islands were among several islands near Grafton, Illinois. Construction of Lock 26 and channel alterations partially inundated Piasa and Eagle's Nest while surrounding islands permanently disappeared.
Today, silt fills the side channel of Piasa and has greatly restricted flow from the main river. The formerly deep interior channel of Piasa also completely dries during low water, leading to decreased aquatic habitat. Both islands continue eroding, leading to further habitat loss.
Restoration opportunities include island stabilization and creation with side channel improvements leading to increased diversity and extent of aquatic habitat and enhanced island habitat.
Quick Facts:
- Approximate acres: 1,380
- Ownership: Federal
- Status: Active
- Phase: Construction