Grundy County · stream · order 4 river · ~110 cfs typical
West Fork Mazon River
West Fork Mazon River 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
Drizzle
81°
64°
16 mph
56%
Sat
Rain
70°
65°
15 mph
88%
Sun
Drizzle
76°
62°
17 mph
47%
↘ 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
- Murray Slough0.9 mi
- Johnny Run2.2 mi
- Gooseberry Creek2.1 mi
- Heidecke Lake7.6 mistocked Jan 1, 2026
- Gooseberry Creek7.1 mi
- Granary Creek6.7 mi
- East Fork Mazon River6.9 mi
- Reddick Run6.9 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.
West Fork Mazon River fishing — FAQ
Do I need a license to fish West Fork Mazon River?+
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 West Fork Mazon River?+
West Fork Mazon River is a stream in Grundy County, Illinois. Driving directions and an interactive topo map are on this page.