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MN Fish Finder

Beetle

Lake County
Near Isabella
DOW: 38055100
Brook TroutExcellent · 90Rainbow TroutGood · 55

A 29-acre lake near Isabella in Lake County — best known for trout. Last surveyed 2024.

Fish Species (6)

Brook Trout

Excellent · 90

Above-normal numbers

Gill-net survey · surveyed Oct 2019

Avg Size
11.3"
Avg Weight
0.58 lbs

Catch rate: 8.5 per gill net

Survey History
DateCatch RateAvg LengthAvg Weight
Oct 9, 20240.1715.5"1.59 lbs
Oct 14, 20191.6711.3"0.67 lbs
Oct 14, 20190.7511.3"0.86 lbs

Rainbow Trout

Good · 55

Typical numbers

Gill-net survey · surveyed May 1986

Last surveyed 1986 — treat with caution

Avg Weight
1.17 lbs

Catch rate: 1.5 per gill net

Survey History
DateCatch RateAvg LengthAvg Weight
May 28, 19860.12-0.20 lbs
May 28, 19861.50-1.17 lbs
Jul 3, 198411.00-0.18 lbs

Northern Pike

Insufficient

Trap-net survey · surveyed Oct 2024

Avg Size
37.0"
Avg Weight
11.01 lbs

Catch rate: 0.08 per trap net

Survey History
DateCatch RateAvg LengthAvg Weight
Oct 9, 20240.0837.0"11.01 lbs
May 19, 20030.0637.0"17.50 lbs
Other species in this lake (3)

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

Golden Shiner

Good · 64

Typical numbers · large fish

Gill-net survey · surveyed Oct 2024

Avg Size
5.5"
Avg Weight
0.12 lbs

Catch rate: 4.5 per gill net · typical 0.5–9.3 for a lake like this

Survey History
DateCatch RateAvg LengthAvg Weight
Oct 9, 20245.175.5"0.06 lbs
Oct 9, 20244.505.5"0.12 lbs
Oct 14, 20190.175.0"0.04 lbs

White Sucker

Average · 35

Typical numbers · small fish

Gill-net survey · surveyed Sep 2014

Last surveyed 2014 — treat with caution

Avg Size
8.1"
Avg Weight
0.47 lbs

Catch rate: 2.5 per gill net · typical 1.6–8.4 for a lake like this

Survey History
DateCatch RateAvg LengthAvg Weight
Sep 15, 20142.508.1"0.47 lbs
Sep 15, 20148.588.1"0.32 lbs
May 12, 200815.6710.2"0.45 lbs

Fathead Minnow

Insufficient

Trap-net survey · surveyed May 2003

Last surveyed 2003 — treat with caution

Catch rate: 767.5 per trap net

Survey History
DateCatch RateAvg LengthAvg Weight
May 19, 2003767.50--
Jul 28, 1999104.50--

Biologist Notes

October 9, 2024Beetle Lake is an undeveloped lake with cool, well oxygenated water located in Isabella and within the Superior National Forest. The lake is a designa…

Beetle Lake is an undeveloped lake with cool, well oxygenated water located in Isabella and within the Superior National Forest. The lake is a designated trout lake managed as a Brook Trout fishery with catchable sized yearling fish stocked each spring. There is a carry in access with a short trail to the lake off Forest Service 383 (Bandana Lake Road) suitable for canoes or small boats that can navigate a shallow and narrow channel to the south side of the main lake. There is also an established Forest Service campsite that provides an additional carry in access site as well as an area to fish from shore located at the end of an unnumbered spur road that travels along the north side of the lake. A standard survey was completed in October 2024 to monitor the fish community and evaluate stocking efforts. The Brook Trout catch was limited to two individuals that were stocked in a previous year and both measured about 16 inches long. Although few trout were sampled the catch did confirm the lake has had adequate habitat for fish to survive in recent years. The Golden Shiner population has recovered since the lake reclamation completed in fall of 2016 and the species is currently abundant compared to previous surveys of the lake. Conversely, no White Sucker were captured in 2024 which indicates that species has not successfully recolonized the lake and does not currently impact trout management. Unfortunately, the catch also included one large Northern Pike which presumably migrated into the lake from an adjacent waterbody during high water conditions at some point since the last survey. The presence of a predator species such as pike can greatly reduce the success of trout stocking. It is unclear if additional pike are in the lake, but the fish community will continue to be monitored to determine if management changes are needed.

June 1, 2024Beetle Lake is a designated stream trout lake that is stocked every year with yearling Brook Trout. A survey was completed in 2024 to monitor the amou…

Beetle Lake is a designated stream trout lake that is stocked every year with yearling Brook Trout. A survey was completed in 2024 to monitor the amount of cool, well oxygenated habitat available for trout during the summer. Automated temperature loggers were suspended at depths of three, six, nine, and twelve feet below the surface over the deepest spot in the lake to record water temperatures hourly throughout the summer. In addition, temperature and dissolved oxygen profiles were collected on several occasions to determine how deep well oxygenated water occurred. Survey results indicated Beetle Lake had preferred Brook Trout temperature and dissolved oxygen levels throughout the summer of 2024. The lake is considered to have good habitat for trout compared to other area lakes managed for Brook Trout.

June 1, 2024Beetle Lake is a designated stream trout lake that is stocked every year with yearling Brook Trout. A survey was completed in 2024 to monitor the amou…

Beetle Lake is a designated stream trout lake that is stocked every year with yearling Brook Trout. A survey was completed in 2024 to monitor the amount of cool, well oxygenated habitat available for trout during the summer. Automated temperature loggers were suspended at depths of three, six, nine, and twelve feet below the surface over the deepest spot in the lake to record water temperatures hourly throughout the summer. In addition, temperature and dissolved oxygen profiles were collected on several occasions to determine how deep well oxygenated water occurred. Survey results indicated Beetle Lake had preferred Brook Trout temperature and dissolved oxygen levels throughout the summer of 2024. The lake is considered to have good habitat for trout compared to other area lakes managed for Brook Trout.

Frequently Asked Questions

What fish can you catch in Beetle?

Based on Minnesota DNR survey data, anglers target Brook Trout and Rainbow Trout in Beetle. See the full species list above for catch rates, size structure, and quality scores.

Is there public access at Beetle?

Minnesota DNR records list public access for Beetle. Check the DNR LakeFinder page for the launch type and directions before you go.

How deep is Beetle?

Beetle has a maximum depth of 26 feet and a mean depth of 6.3 feet, per Minnesota DNR data.

When were the main sport fish in Beetle last surveyed?

The most recent Minnesota DNR survey data for the main sport fish in Beetle is from 2024.

Does Beetle have any invasive species?

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

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Lake Details

Surface Area
29.26 acres
Max Depth
26 ft
Mean Depth
6.3 ft
Shoreline
1.35 mi
Public Access
Yes
View on DNR LakeFinder

Location

47.6948°N, 91.5227°W

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