Grundy County · reservoir · 1,913 acres
Heidecke Lake
Stocked 21× since 2021 · Illinois DNR
Heidecke Lake is a reservoir in Grundy County, Illinois, stocked with Blacknose Crappie, Blue Catfish, Muskellunge and Striped Bass x White Bass (Wiper) — most recently on Jan 1, 2026. FishableWaters aggregates every stocking record for this water from Illinois DNR; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Overcast
85°
57°
6 mph
0%
Fri
Rain
86°
63°
13 mph
57%
Sat
Showers
69°
67°
23 mph
86%
→ pressure steadyStable weather — expect a normal bite.
Stocking ledger
| — 2026 — | ||||
| Jan 1 | Walleye | 105,682 | 2" | |
| Jan 1 | Walleye | 105,682 | 2" | |
| Jan 1 | Striped Bass x White Bass (Wiper) | 17,377 | 2" | |
| — 2025 — | ||||
| Jan 1 | Striped Bass x White Bass (Wiper) | 21,232 | 2" | |
| Jan 1 | Walleye | 102,815 | 2" | |
| Jan 1 | Muskellunge | 1,959 | ||
| — 2024 — | ||||
| Jan 1 | Blue Catfish | 268 | ||
| Jan 1 | Blacknose Crappie | 45,021 | 2" | |
| Jan 1 | Blacknose Crappie | 45,021 | 2" | |
| Jan 1 | Walleye | 118,585 | 2" | |
| Jan 1 | Striped Bass x White Bass (Wiper) | 19,775 | 2" | |
| Jan 1 | Walleye | 118,585 | 2" | |
| — 2023 — | ||||
| Jan 1 | Striped Bass x White Bass (Wiper) | 20,385 | 2" | |
| Jan 1 | Blacknose Crappie | 8,673 | 2" | |
| Jan 1 | Walleye | 65,631 | 2" | |
| — 2022 — | ||||
| Jan 1 | Walleye | 130,104 | 2" | |
| Jan 1 | Striped Bass x White Bass (Wiper) | 18,428 | 2" | |
| Jan 1 | Muskellunge | 1,955 | ||
| Jan 1 | Blacknose Crappie | 153,425 | 2" | |
| Jan 1 | Walleye | 130,104 | 2" | |
| — 2021 — | ||||
| Jan 1 | Blacknose Crappie | 36,510 | 2" | |
When does Heidecke Lake get stocked?
Going by 21 records since 2021, stocking here peaks in January.
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
All Illinois waters with blacknose crappie → · All Illinois waters with blue catfish →
Nearby waters
- Aux Sable Creek1.3 mi
- Negro Slough1.5 mi
- Aux Sable Lake2.8 mi
- Collins Run4.1 mi
- Goose Lake3.2 mi
- Dresden Island Pool4.1 mi
- Mud Slough4.1 mi
- Mazon River4.3 mi
Seasons, limits, and rules are the state's call — check the official IL regulations and buy your license before you go. We link the source; we never restate the rules.
Heidecke Lake fishing — FAQ
What fish are stocked in Heidecke Lake?+
Heidecke Lake is stocked with Blacknose Crappie, Blue Catfish, Muskellunge and Striped Bass x White Bass (Wiper) in Grundy County, Illinois, most recently on Jan 1, 2026 by Illinois DNR. The full stocking ledger is on this page.
When does Heidecke Lake get stocked?+
Going by 21 records since 2021, stocking at Heidecke Lake peaks in January. Check this page for the season's scheduled and most recent stockings.
Do I need a license to fish Heidecke Lake?+
Yes — Illinois requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Heidecke Lake?+
Heidecke Lake is a reservoir in Grundy County, Illinois. Driving directions and an interactive topo map are on this page.
Data: Illinois DNR · updated Jan 1, 2026 · checked daily · we publish what agencies publish, nothing else.