Decker

Itasca County

Near Rosy

DOW: 31093400

Yellow PerchGood · 74WalleyeGood · 56PumpkinseedGood · 53

A 325-acre lake near Rosy in Itasca County — best known for panfish and walleye. Last surveyed 1985.

Fish Species (8)

Yellow Perch

Good · 74

Typical numbers · large fish

Gill-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

0.39 lbs

Catch rate: 22.5 per gill net · typical 8–40.3 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	4.17	-	0.35 lbs	Standard trap nets
Jul 1, 1985	22.50	-	0.39 lbs	Standard gill nets
Jul 8, 1974	4.00	-	0.31 lbs	Standard trap nets

Walleye

Good · 56

Typical numbers · large fish

Gill-net survey · surveyed Jul 1974

Last surveyed 1974 — treat with caution

Avg Weight

2.50 lbs

Catch rate: 2.0 per gill net · typical 1.5–5.8 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 8, 1974	2.00	-	2.50 lbs	Standard gill nets
Jul 8, 1974	0.50	-	3.12 lbs	Standard trap nets

Pumpkinseed

Good · 53

Typical numbers · average-size fish

Trap-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

0.21 lbs

Catch rate: 2.8 per trap net · typical 1.4–8.6 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	2.83	-	0.21 lbs	Standard trap nets

Northern Pike

Average · 44

Typical numbers · average-size fish

Gill-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

1.50 lbs

Catch rate: 7.0 per gill net · typical 4.6–11.6 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	7.00	-	1.50 lbs	Standard gill nets
Jul 1, 1985	1.33	-	1.35 lbs	Standard trap nets
Jul 8, 1974	24.00	-	1.48 lbs	Standard gill nets

Other species in this lake (4)

Rough fish, bullheads, and baitfish recorded in DNR surveys — present in the lake, but not typical angling targets.

Yellow Bullhead

Excellent · 97

Above-normal numbers · large fish

Trap-net survey · surveyed Jul 1974

Last surveyed 1974 — treat with caution

Avg Weight

1.16 lbs

Catch rate: 49.5 per trap net · typical 1.8–7.2 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 8, 1974	49.50	-	1.16 lbs	Standard trap nets
Jul 8, 1974	8.00	-	0.50 lbs	Standard gill nets

Brown Bullhead

Average · 46

Typical numbers · average-size fish

Trap-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

0.44 lbs

Catch rate: 3.3 per trap net · typical 1.5–9.8 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	1.50	-	0.33 lbs	Standard gill nets
Jul 1, 1985	3.33	-	0.44 lbs	Standard trap nets
Jul 8, 1974	16.50	-	0.32 lbs	Standard gill nets

Black Bullhead

Average · 41

Typical numbers · small fish

Trap-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

0.09 lbs

Catch rate: 8.3 per trap net · typical 1.1–17.4 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	6.00	-	0.17 lbs	Standard gill nets
Jul 1, 1985	8.33	-	0.09 lbs	Standard trap nets

White Sucker

Average · 29

Typical numbers · small fish

Gill-net survey · surveyed Jul 1985

Last surveyed 1985 — treat with caution

Avg Weight

0.27 lbs

Catch rate: 1.5 per gill net · typical 1–5.5 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Jul 1, 1985	1.50	-	0.27 lbs	Standard gill nets
Jul 8, 1974	1.00	-	2.00 lbs	Standard gill nets

See the best yellow perch lakes in Minnesota

Fishing Regulations

Statewide limits

Standard statewide Minnesota limits for the species in this lake.

Walleye and Sauger

Season: May 9, 2026 – Feb 28, 2027

6 combined, not more than one walleye over 20"

Northern Pike

Season: May 9, 2026 – Feb 28, 2027

North-central zone

Angling: 10 (not more than 2 over 26". All from 22-26" must be immediatley released).

Sunfish

20 combined total

Perch

20 daily and 40 in possession

More statewide rules (spearing, rough fish)

Northern Pike

Season: Nov 15, 2026 – Feb 28, 2027

North-central zone

Darkhouse spearing: 10 (only 1 between 22-26" and 1 over 26"; or, only 2 over 26").

Bowfin, buffalo, carp, carpsuckers, freshwater drum, goldeneye, redhorse, and suckers

no limit

Bullhead

100

Biologist Notes

July 1, 1985LAKE HAS GOOD POPULATIONS OF NORTHERN PIKE, BULL- HEADS, PUMPKINSEEDS AND YELLOW PERCH.

LAKE HAS GOOD POPULATIONS OF NORTHERN PIKE, BULL- HEADS, PUMPKINSEEDS AND YELLOW PERCH.

July 8, 1974Bullhead population is quite high and periodic removal is justified. N Pike population is in good shape. The Walleye population is probably at the hig…

Bullhead population is quite high and periodic removal is justified. N Pike population is in good shape. The Walleye population is probably at the highest level the lake can consistently maintain and appears to be the result of migration from other lakes in the area.

Frequently Asked Questions

What fish can you catch in Decker?

Based on Minnesota DNR survey data, anglers target Yellow Perch, Walleye, Pumpkinseed, and Northern Pike in Decker. See the full species list above for catch rates, size structure, and quality scores.

Is there public access at Decker?

We don't have a confirmed public access point on record for Decker. Check the DNR LakeFinder page for current access details before you go.

How deep is Decker?

Decker has a maximum depth of 12 feet, per Minnesota DNR data.

When were the main sport fish in Decker last surveyed?

The most recent Minnesota DNR survey data for the main sport fish in Decker is from 1985. Surveys this old should be treated with some caution — fish populations change over time.

Does Decker have any invasive species?

No invasive species are on record for Decker in Minnesota DNR data. Always clean, drain, and dry your equipment to help keep it that way.

Are there special fishing regulations on Decker?

No — Decker has no lake-specific regulations in the 2026 Minnesota DNR regulations, so statewide Minnesota limits apply. The statewide perch limit is: 20 daily and 40 in possession. Verify current rules with the Minnesota DNR before keeping fish.