Loon Lake
St. Louis County, Minnesota
Today's Fishing Forecast
Fishing looks to be moderately active with peak fishing times around 3-5 PM. SEE MORE

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We want to see what you've caught on Loon Lake.Frequently Asked Questions About Loon Lake, MN
- How big is Loon Lake?
- How deep is Loon Lake?
- What kind of fish can you catch in Loon Lake?
- Are there places to stay in the Loon Lake area?
- Are there boat launches on Loon Lake?
- Are there places to eat and drink near Loon Lake?
- What is the average air temp for Loon Lake?
How big is Loon Lake?
How deep is Loon Lake?
What kind of fish can you catch in Loon Lake?
Other fish species in the lake include Hybrid Sunfish and White Sucker.
Are there places to stay in the Loon Lake area?
More Lodging Options
Are there boat launches on Loon Lake?
Are there places to eat and drink near Loon Lake?
Explore the Loon Lake area in a RV
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History & Status of the Fishery
Loon Lake is a 271 acre lake located nine miles south of Aurora. It is accessed by a ramp on the southwestern side of the east bay of the lake. The 5 lake has a maximum depth of 85 feet and clear water. On August 19, 2020 the lake was thermally stratified with a surface temperature of 72 F and a bottom temperature of 40 F. Oxygen levels were adequate for gamefish to a depth of 26 feet where the temperature was 53 degrees. Lake bottom substrates along the shoreline are mostly gravel and sand with some muck in the bays. Vegetation can be fairly thick in some of the bays. The overall gillnet catch rate for all fish combined was 18.2 fish/net which was below average compared to past surveys on Loon Lake. Yield was 16.9 lbs/net which was also below average. Fish species sampled were yellow perch, bluegill, northern pike, walleye, black crappie, white sucker, hybrid sunfish, largemouth bass, and yellow bullhead. Trap nets caught fish at an overall rate of 27.7 fish/net which was lower than the average of past surveys on Loon Lake. Yield was 8.6 lbs/net which was also below average. Additional species sampled in trap nets that weren't also sampled in gill nets were rock bass and pumpkinseed. Twelve walleye were sampled in gill nets for a catch rate of 2.0 fish/net, which was below average compared to other similar lakes but slightly higher than some of the recent surveys on Loon. Walleye lengths ranged from 10 to 23 inches with an average over 19 inches. This average length was good compared to past surveys on the lake. The average weight was nearly 3 pounds which was very good compared to other similar lakes. Growth rates were excellent with the average walleye measuring 15 inches at four years old. Fish were aged up to 12 years old. Walleye fingerlings are stocked in Loon every other year although there was one walleye of the 12 caught that did not come from a stocked year indicating at least a little natural reproduction. The northern pike gillnet catch rate was 3.8 fish/net which was below average compared to past surveys but better than normal when compared against other similar lakes. Lengths ranged from 13 to nearly 37 inches with an average of just over 19 inches. The black crappie trapnet catch was 2.2 fish/net which was better than average compared to other similar lakes and good compared to past surveys on Loon Lake. Lengths ranged from 5 to 10 inches with an average of 8.5 inches. Sizes were similar to crappies caught in past surveys. The bluegill trapnet catch was 20.7 fish/net which was very good compared to other similar lakes, but slightly below average when compared to past catches on Loon Lake. Sizes ranged from 4 to over 8 inches with an average of 6 inches. Ages ranged from 4 to 10 years old with good representation from all year classes. Growth rates were slow with the average fish taking 8 years to reach 7 inches long. Thirty-three yellow perch were sampled in gill nets for a catch rate of 5.5 fish/net. This was better than average compared to other similar lakes and good for Loon Lake. Lengths were similar to past surveys with a range from 5 to over 9 inches, and an average of nearly 7 inches.
What is the average air temp for Loon Lake?
More Nearby Lakes To Explore
There's more lake's to explore around Loon Lake...| DISTANCE | ACRES | MAX DEPTH | |
| Unnamed Lake | 1.5 mi | 71 | 39 ft |
| Kumpala Lake | 1.5 mi | 74 | 39 ft |
| Hautala Lake | 2.1 mi | 37 | |
| Frying Pan Lake | 2.8 mi | 69 | 39 ft |
| Tikander Lake | 2.8 mi | 2,165 | |
| Mud Hen Lake | 2.9 mi | 161 | 9 ft |
| Coe Lake | 3.3 mi | 55 | 22 ft |
| Little Mud Hen Lake | 4.0 mi | 69 | |
| South Twin Lake | 4.0 mi | 118 | 48 ft |
| Cedar Lake | 4.2 mi | 65 | 30 ft |



