Jacob Krumm Nature Preserve

Jacob Krumm Nature Preserve is a 450-acre park and nature preserve located ¼ mile north of the Lynnville exit, off I-80.

Ahrens Access provides the public with excellent fishing opportunities. The lake is surrounded by natural prairie grasses and forbes which works as a natural filter for all water coming down from the watershed.


  • Fishing
  • Boating (*Electric Motors Only)
  • Boat Ramp
  • Canoeing/Kayaking

Park Hours

5:00 a.m. to 10:30 p.m.


Located West of the Nature Preserve on Jacob Ave.

14892 Jacob Ave.
Grinnell, IA 50112

Map · Jacob Krumm Nature Preserve

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