Restoration of Johnson’s Shut-Ins State Park
Lesterville, Reynolds County, Missouri
When AmerenUE’s 55-acre Taum Sauk hydroelectric reservoir breached, 1.5 billion
gallons of water rushed into a southeastern-Missouri state park, scouring land,
destroying habitat, and leaving tons of sediment, trees, and construction debris
in its wake.
MACTEC was on-scene for the client within 48 hours of the breach to assess
environmental impact and mitigate further damage. During the next two years,
MACTEC removed more than 100,000 cubic yards of flood-related sediment,
remediated the affected Black River and Shut-Ins geologic formation, restored
the park ecosystem, and rebuilt and added new park amenities.
Nature’s focal point restored…Johnson’s Shut-Ins State Park, Missouri
Project Video