Grundy County · stream · order 5 river
Mud Slough
Mud Slough is a stream in Grundy County, Illinois. FishableWaters aggregates every stocking record for this water from Illinois's fish & wildlife agency; 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
83°
63°
15 mph
52%
Sat
Showers
72°
68°
23 mph
85%
→ pressure steadyStable weather — expect a normal bite.
Stocking ledger
No published stocking records yet. This water stays in our books — the ledger begins the hour its state agency publishes a record.
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- Mazon River0.3 mi
- Nettle Creek0.8 mi
- East Fork Nettle Creek0.8 mi
- Waupecan Creek2.7 mi
- Bills Run3.3 mi
- Collins Cooling Pond4.6 mi
- Heidecke Lake4.1 mistocked Jan 1, 2026
- Negro Slough4.5 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.
Mud Slough fishing — FAQ
Do I need a license to fish Mud Slough?+
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 Mud Slough?+
Mud Slough is a stream in Grundy County, Illinois. Driving directions and an interactive topo map are on this page.