Grundy County · stream · order 4 river · ~40 cfs typical
Johnny Run
Johnny Run 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
Rain
81°
63°
15 mph
57%
Sat
Showers
71°
67°
24 mph
80%
Sun
Drizzle
75°
62°
18 mph
38%
↘ pressure fallingFalling pressure ahead of a front often turns the bite on.
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
- West Fork Mazon River2.2 mi
- Murray Slough2.8 mi
- Gooseberry Creek3.9 mi
- Heidecke Lake5.6 mistocked Jan 1, 2026
- Mud Slough5.5 mi
- Mazon River5.8 mi
- Nettle Creek6.1 mi
- East Fork Nettle Creek6.3 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.
Johnny Run fishing — FAQ
Do I need a license to fish Johnny Run?+
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 Johnny Run?+
Johnny Run is a stream in Grundy County, Illinois. Driving directions and an interactive topo map are on this page.