National Natural Landmarks

Heron Pond-Little Black Slough Natural Area

Heron Pond-Little Black Slough Natural Area
Heron Pond-Little Black Slough Natural Area

Heron Pond-Little Black Slough Natural Area is the largest remaining cypress-tupelo swamp in Illinois. The site contains a heron rookery and the valley is an outstanding example of alluvial, colluvial, and lacustrine sedimentation within an entrenched meandering valley system.

Location: Johnson County, IL ; Johnson County, IL

Year designated: 1972

Acres: 6,762

Ownership: State, Private




← Back to NNL listing for IL.

← Back to listing of all states and territories.

Please remember, National Natural Landmarks (NNLs) are not national parks. NNLs are owned by a variety of public and private entities and allowing visitation is at their discretion. Many NNL sites maintain public websites where additional information may be found.

Experience More

Tools

  • Site Index