Fladmark Lake
Otter Tail County, Minnesota
Today's Fishing Forecast
Fishing looks to be fairly active with peak fishing times around 7-8 AM and 3-5 PM. SEE MORE

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We want to see what you've caught on Fladmark Lake.Frequently Asked Questions About Fladmark Lake, MN
- How big is Fladmark Lake?
- How deep is Fladmark Lake?
- What kind of fish can you catch in Fladmark Lake?
- What are the closest cities to Fladmark Lake?
- Are there places to stay in the Fladmark Lake area?
- Are there boat launches on Fladmark Lake?
- Are there places to eat and drink near Fladmark Lake?
- What are the fishing regulations for Fladmark Lake?
- What is the average air temp for Fladmark Lake?
- Are there any state parks near Fladmark Lake?
How big is Fladmark Lake?
How deep is Fladmark Lake?
What kind of fish can you catch in Fladmark Lake?
Other fish species in the lake include Green Sunfish, Hybrid Sunfish and White Sucker.
What are the closest cities to Fladmark Lake?
Are there places to stay in the Fladmark Lake area?
More Lodging Options
Are there boat launches on Fladmark Lake?
Are there places to eat and drink near Fladmark Lake?
What are the fishing regulations for Fladmark Lake?
There are specific fishing regulations Fladmark Lake that you need to know. For complete fishing regulations visit the Minnesota Department of Natural Resources. To report a violation call (800) 652-9093. Need a Minnesota fishing license?
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History & Status of the Fishery
Fladmark Lake is a 55-acre mesotrophic (moderately fertile) lake located in northwestern Otter Tail County approximately eight miles east of Erhard, MN. The immediate watershed is composed of hardwood forest and grassland. The maximum depth is 45 feet, however, 38% of the lake is 15 feet or less in depth. The secchi disk reading during the 2018 survey was 19.0 feet. Previous secchi disk readings have ranged from 19.0 to 28.0 feet.
Fladmark Lake is located entirely within Maplewood State Park. The lakeshore is entirely undeveloped. An earthen public water access is located along the southwest shoreline. Shoal water substrates consist primarily of sand and gravel. Hardstem bulrush is prevalent along the entire shoreline.
Special fishing regulations are in effect on Fladmark Lake. The sunfish possession limit is ten. The Black Crappie possession limit is five. All Largemouth Bass and Northern Pike must be immediately released. The objective of these regulations is to improve the size structure of these species.
Fladmark Lake can be ecologically classified as a bass-panfish type of lake and this is reflected in the assemblage of the fish community. Northern Pike, Largemouth Bass, and Bluegill are the dominant gamefish species in the fish community.
A moderate density Northern Pike population exists. Pike ranged in length from 16.9 to 33.7 inches with an average length and weight of 21.4 inches and 2.4 pounds. Northern pike attain an average length of 18.1 inches at three years of age.
The Bluegill population is also moderately abundant. Age data indicate that Bluegill reproduction is consistently good. Twenty-three percent of the Bluegills in the trap net sample were 7.0 inches or greater in length. Bluegills attain an average length of 7.0 inches at seven years of age.
Data from recent surveys indicate that a balanced Largemouth Bass population exists. Bass reproduction is consistently good. Bass ranged in length from 5.5 to 15.6 inches. Largemouth Bass attain an average length of 12.4 inches at four years of age.
Anglers can also maintain the quality of fishing by practicing selective harvest. Selective harvest encourages the release of medium to large-size fish while allowing the harvest of more abundant smaller fish for table fare. Releasing the medium to large fish will ensure that lake will have enough spawning age fish on an annual basis and will provide anglers with more opportunities to catch large fish in the future.
Fladmark Lake is not listed as an infested water. Aquatic invasive species are threatening Minnesota waters. Aquatic invasive species can potentially harm water quality, water recreation, aquatic habitat, native species, and fish populations. Anglers can help prevent the introduction and spread of invasive species by following watercraft transportation laws.
What is the average air temp for Fladmark Lake?
Are there any state parks near Fladmark Lake?
For more Minnesota State Park information see our State Park Guide.
More Nearby Lakes To Explore
There's more lake's to explore around Fladmark Lake...| DISTANCE | ACRES | MAX DEPTH | |
| Unnamed Lake | 0.9 mi | 44 | |
| Wilson Lake | 1.2 mi | 52 | |
| Bon Lake | 1.3 mi | 35 | |
| Round Lake | 1.3 mi | 73 | 14 ft |
| Beers Lake | 1.3 mi | 317 | 61 ft |
| Round Lake | 1.3 mi | 84 | |
| Cow Lake | 1.4 mi | 16 | 33 ft |
| Bass Lake | 1.5 mi | 34 | 43 ft |
| North Long Lake | 1.6 mi | 161 | |
| Eddy Lake | 1.7 mi | 141 | 34 ft |



