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Brook Trout
Photo: James St. John, CC BY 2.0 
Yellow Perch
Photo: Robert Colletta, Public domain 
Flathead Catfish
Photo: USFWSmidwest, Public domain 
White Bass
Photo: Nick Loveland, CC0
Michigan rivers
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Big Iron River Fishing
Ontonagon County, MDNR trout water.
Pick for troutPiscifun Carbon X ultralight spinning reel28% OFFSale $57.99 Photo of Lake Gogebic: Tony Webster, CC BY 2.0
Michigan rivers
A first look at the Big Iron River
The Big Iron River is a river whose channel threads Ontonagon County. About 27.5 miles of channel are in the MDNR hydrography. From the mapped point, Ontonagon lies around 19 miles away.
About 27.5 miles carry an MDNR trout regulation Type (Type 1 and Type 3). There are 1 public launch along it.
27.5miles mapped
27.5trout miles
0USGS gauges
1launches
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The Big Iron River and its MDNR trout Type
27.5trout miles
27.5designated miles
| Type | Miles | Fishing season | Daily possession | Tackle |
|---|---|---|---|---|
| Type 3 | 17.1 | January 1st to December 31st | 5 fish, with no more than 3 trout 15" or greater. Zero (0) Arctic Grayling. | Artificial lures and all types of natural bait may be used. |
| Type 1 | 10.4 | Last Saturday in April to September 30th | 5 fish, with no more than 3 trout 15" or greater. Zero (0) Arctic Grayling. | Artificial lures and all types of natural bait may be used. |
Read the Type for the reach of the Big Iron River you plan to fish; seasons and sizes differ by Type.
Trout and salmon need no separate stamp in Michigan; the all-species license ($26 resident, $76 nonresident a year) covers them.
MDNR Trout and Salmon Inland Stream Regulation Types and gear-restricted layers; 2026 Michigan Fishing Regulations (April 1, 2026 to March 31, 2027). Michigan trout streams.
Fish
Species anglers find in the Big Iron River
Species on the Big Iron River list have an MDNR record behind them.
MDNR trout stream layer, fishing sites, stocking table and state records.
Access
Getting onto the Big Iron River
- Big Iron River Mouth Boat Access1 lane, 19 trailer spaces, courtesy pier, toilet, Ontonagon County
MDNR boat access sites, MDNR fishing sites, USGS gauges.
Regulations
Keeper rules posted for the Big Iron River
| Species | Limit | Season |
|---|---|---|
| Largemouth and smallmouth bass | 5 in any combination; minimum 14 inches | Possession: Sat. before Memorial Day – Dec. 31; catch-and-immediate-release open all year |
| Walleye (Upper Peninsula) | 5; minimum 15 inches | May 15 – March 15 |
| Northern pike (Upper Peninsula) | 2; minimum 24 inches | May 15 – March 15 |
| Muskellunge | Only 1 per angler per license year (April 1 – March 31); mandatory harvest registration within 24 hours; minimum 42 inches (46, 50 or 38 inches on listed waters) | Possession: 1st Sat. in June – March 15; catch-and-immediate-release open all year |
| Yellow perch | 25 | Open all year |
| Sunfish and crappie | 25 in any combination of the listed species | Open all year |
| Channel catfish | 10; minimum 12 inches | Open all year |
| Flathead catfish | 5; minimum 15 inches | Open all year |
| White bass | 10 | Open all year |
| Cisco and whitefish | 5 in any combination | Open all year |
| Burbot | 5 | Open all year |
| Trout and salmon (stream Type 1) | 5 fish, but no more than 3 trout 15 inches or greater; minimum brook 7", brown 8", salmon/lake trout/rainbow (steelhead)/splake 10" | Fishing: Last Sat. in April – Sep. 30; possession: Last Sat. in April – Sep. 30 |
The Upper Peninsula inland table governs the Big Iron River, with the trout row for stream Type 1, plus any listed exception.
2026 Michigan Fishing Regulations (April 1, 2026 to March 31, 2027). All Michigan limits.
Nearby
Places around the Big Iron River
Other lakes a short drive from the Big Iron River
- Mirror Lake, Ontonagon County8 miles
- Clouds, Lake of the9 miles
- Lake Gogebic15 miles
- Sunday Lake21 miles
A guided day on the Big Iron River
- Voyager Charterscharter, Bruce Crossing, (906) 827-3466
Michigan towns a short drive from the Big Iron River
- White Pine4 miles
- Bergland8 miles
- Lake Gogebic8 miles
- Ontonagon19 miles
Rivers to try next to the Big Iron River
- Little Iron River3 miles
- Mineral River4 miles
- West Branch Iron River4 miles
- Cascade Creek7 miles
the Big Iron River, county by county
Piscifun
What Piscifun sells for the Big Iron River anglers
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Fish ID
Identifying the fish of Big Iron River
Photo: James St. John, CC BY 2.0
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Photo: Robert Colletta, Public domain
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Photo: USFWSmidwest, Public domain
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Photo: Nick Loveland, CC0
Answers
The usual questions about the Big Iron River
Which Michigan counties does the Big Iron River drain?
Look on the map of Ontonagon County.
Which trout Type covers the Big Iron River?
The MDNR types about 27.5 miles (Type 1 and Type 3).
How much water is the Big Iron River carrying this week?
No flow station covers it.
Can a trailer reach the Big Iron River at a public launch?
1 public launch, such as Big Iron River Mouth Boat Access.
When is the Big Iron River open for trout?
Type 3: 5 fish, with no more than 3 trout 15" or greater. Zero (0) Arctic Grayling. Season: January 1st to December 31st.
Does Michigan sell a trout stamp for the Big Iron River?
Trout and salmon need no separate stamp in Michigan; the all-species license ($26 resident, $76 nonresident a year) covers them.
Which tackle store sits handiest to the Big Iron River?
Nothing inside 25 miles.
Which fish does the Big Iron River carry, by MDNR records?
The MDNR lists trout.
Where do anglers bunk for a trip to the Big Iron River?
Ontonagon is roughly 19 miles from the stream.
Spend a Michigan morning on the Big Iron River
MDNR limits and live flow sit on this page.