Thompson

St. Louis County

Near Fredenberg

DOW: 69024100

Northern PikeExcellent · 78Black CrappieGood · 59PumpkinseedAverage · 46

A 207-acre lake near Fredenberg in St. Louis County — best known for pike and panfish. Last surveyed 2000.

Fish Species (10)

Northern Pike

Excellent · 78

Typical numbers · large fish

Gill-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

23.9"

Avg Weight

4.43 lbs

Catch rate: 5.0 per gill net · typical 3–8.3 for a lake like this

Size of catchable northern pike52% keeper-size (24"+)

14–23" · 48%Largest sampled 34"

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	5.00	23.9"	4.43 lbs	Standard gill nets
Sep 11, 2000	0.44	23.9"	1.79 lbs	Standard trap nets
Aug 22, 1990	1.25	-	0.26 lbs	Standard trap nets

Black Crappie

Good · 59

Typical numbers · average-size fish

Trap-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

7.7"

Avg Weight

0.31 lbs

Catch rate: 2.8 per trap net · typical 0.8–3.5 for a lake like this

Size of catchable black crappie16% keeper-size (10"+)

5–9" · 84%Largest sampled 11"

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	2.78	7.7"	0.31 lbs	Standard trap nets
Sep 11, 2000	0.50	7.7"	0.27 lbs	Standard gill nets

Pumpkinseed

Average · 46

Above-normal numbers · small fish

Trap-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

4.3"

Avg Weight

0.20 lbs

Catch rate: 6.8 per trap net · typical 0.7–3.4 for a lake like this

Size of catchable pumpkinseed0% keeper-size (8"+)

3–7" · 100%Largest sampled 6"

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	7.25	4.3"	0.26 lbs	Standard gill nets
Sep 11, 2000	6.78	4.3"	0.20 lbs	Standard trap nets
Aug 22, 1990	0.25	-	0.10 lbs	Standard trap nets

Largemouth Bass

Average · 42

Average-size fish

Trap-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

8.0"

Avg Weight

0.32 lbs

Catch rate: 0.11 per trap net · typical 0.2–0.5 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	0.11	8.0"	0.32 lbs	Standard trap nets

Yellow Perch

Poor · 13

Below-normal numbers · small fish

Gill-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

3.5"

Avg Weight

0.08 lbs

Catch rate: 2.8 per gill net · typical 4.5–19 for a lake like this

Size of catchable yellow perch0% keeper-size (9"+)

5–8" · 100%Largest sampled 7"

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	2.75	3.5"	0.08 lbs	Standard gill nets
Sep 11, 2000	1.11	3.5"	0.09 lbs	Standard trap nets
Sep 11, 2000	32.00	3.5"	-	Survey seining

Bluegill

Poor · 4

Below-normal numbers · small fish

Trap-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

5.0"

Avg Weight

0.22 lbs

Catch rate: 0.56 per trap net · typical 2.3–7.8 for a lake like this

Size of catchable bluegill0% keeper-size (8"+)

3–7" · 100%Largest sampled 7"

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	0.56	5.0"	0.22 lbs	Standard trap nets
Sep 11, 2000	0.50	5.0"	-	Survey seining
Sep 11, 2000	0.75	5.0"	0.28 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.

White Sucker

Good · 68

Typical numbers · large fish

Gill-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

16.4"

Avg Weight

3.71 lbs

Catch rate: 4.5 per gill net · typical 2–11.5 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	4.50	16.4"	3.71 lbs	Standard gill nets
Sep 11, 2000	0.78	16.4"	6.07 lbs	Standard trap nets
Aug 22, 1990	7.33	-	1.70 lbs	Standard gill nets

Golden Shiner

Good · 50

Below-normal numbers · large fish

Gill-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

6.0"

Avg Weight

0.17 lbs

Catch rate: 0.25 per gill net · typical 0.3–1.7 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	0.25	6.0"	0.17 lbs	Standard gill nets

Black Bullhead

Average · 47

Typical numbers · average-size fish

Trap-net survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Avg Size

6.7"

Avg Weight

0.37 lbs

Catch rate: 2.4 per trap net · typical 0.8–24.6 for a lake like this

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	89.25	6.7"	0.28 lbs	Standard gill nets
Sep 11, 2000	2.44	6.7"	0.37 lbs	Standard trap nets
Aug 22, 1990	162.33	-	0.09 lbs	Standard gill nets

Johnny Darter

Insufficient

Seining survey · surveyed Sep 2000

Last surveyed 2000 — treat with caution

Catch rate: 0.5 · Seining survey

Survey History

Date	Catch Rate	Avg Length	Avg Weight	Gear
Sep 11, 2000	0.50	-	-	Survey seining

Biologist Notes

September 11, 2000Results from the 2000 lake survey indicate that Thompson Lake is currently comprised of northern pike, yellow perch, black crappie, pumpkinseed sunfis…

Results from the 2000 lake survey indicate that Thompson Lake is currently comprised of northern pike, yellow perch, black crappie, pumpkinseed sunfish, and black bullhead. There is no established boat access but walk-in access can be gained through county tax forfeit land on the south side of the lake. Thompson Lake is shallow, very weedy, and has historically had low winter oxygen levels. The best angling opportunities exist for northern pike and black crappie. Northern pike numbers are average compared to other lakes throughout the state with similar physical and chemical characteristics. Northern pike size is probably slightly better than average and several fish over 30 inches were captured. Black crappie numbers were slightly above average and sizes were favorable with several fish over 9 inches sampled.

August 22, 1990LAKE HAS A LARGE NUMBER OF BLACK BULLHEADS. SOME NORTHERN RECRUITMENT IS TAKING PLACE, EITHER IN THE LAKE ITSELF OR FROM IMMAGRATION VIA THE OUTLET.

LAKE HAS A LARGE NUMBER OF BLACK BULLHEADS. SOME NORTHERN RECRUITMENT IS TAKING PLACE, EITHER IN THE LAKE ITSELF OR FROM IMMAGRATION VIA THE OUTLET.

Frequently Asked Questions

What fish can you catch in Thompson?

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

Is there public access at Thompson?

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

How deep is Thompson?

Thompson has a maximum depth of 9 feet, per Minnesota DNR data.

When were the main sport fish in Thompson last surveyed?

The most recent Minnesota DNR survey data for the main sport fish in Thompson is from 2000. Surveys this old should be treated with some caution — fish populations change over time.