Johnson's Shut-Ins Fen


Blue Lobelia
Blue Lobelia
Designated as a natural area since
MO Department of Natural Resources
Johnson’s Shut-Ins State Park
Contact Phone

Points of Interest:

  • This area is in the process of restoration after the 2005 flood from the breach of the AmerenUE Upper Taum Sauk reservoir.
  • Look for dragonflies darting through wetland vegetation.

Natural Features Description:

This area supported a vibrant fen community prior to the disastrous flood in 2005 when the AmerenUE Upper Taum Sauk reservoir was breached. This area was inundated and large amounts of sediments were deposited on top of the fen. An intensive restoration effort including removing the flood-deposited sediments occurred in the days after the reservoir break flood. Restoration and monitoring efforts are ongoing. It remains to be seen whether this site will recover to its pre-flood diversity.

Access Info

This natural area is within Johnson’s Shut-Ins State Park. Inquire at the park office about a visit to this natural area. The Black River hiking trail passes by the natural area. To reach the park office: from the intersection of Highway 21 and Highway N north of Pilot Knob (Iron Co.) go west nearly 13 miles to the park entrance on the left (south). Follow the signs to the park office.