Illinois /

Heidecke Lake

Reservoir in Illinois · 1,906 acres · near Aux Sable

Aerial view of Heidecke Lake
Aerial view of Heidecke Lake Photo: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0 · via Wikimedia Commons
  • Aerial view of Heidecke Lake, August 2019

Heidecke Lake is a 1,906-acre reservoir near Aux Sable in Illinois, with 1 public boat ramp listed here.

Zebra mussels

Zebra mussels (latest report 1993) reported in this water (USGS Nonindigenous Aquatic Species database). Clean, drain and dry your boat, trailer and gear before you leave, and do not move water, plants or live bait to another water.

USGS Nonindigenous Aquatic Species database · checked October 20, 2026

Motors: No horsepower limit (for the whole water, per the boating rules map of Illinois Department of Natural Resources; check the posted rules before you go)

Boating rules

From the boating rules map of Illinois Department of Natural Resources, read October 18, 2026. A map of rules is a guide: the regulation's text and the posted signs govern.

Boat launches on Heidecke Lake

Community

Where people who fish, boat and paddle Heidecke Lake talk about it. Lake associations, clubs and local groups will be added as we find them.