Willmert Lake (Main Bay)
Martin County, Minnesota


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Frequently Asked Questions About Willmert Lake (Main Bay), MN
- How big is Willmert Lake (Main Bay)?
- How deep is Willmert Lake (Main Bay)?
- What kind of fish can you catch in Willmert Lake (Main Bay)?
- What are the closest cities to Willmert Lake (Main Bay)?
- Are there places to stay in the Willmert Lake (Main Bay) area?
- Are there topographical lake maps available Willmert Lake (Main Bay)?
- Are there boat launches on Willmert Lake (Main Bay)?
- Are there places to eat and drink near Willmert Lake (Main Bay)?
- What is the average air temp for Willmert Lake (Main Bay)?
How big is Willmert Lake (Main Bay)?
How deep is Willmert Lake (Main Bay)?
What kind of fish can you catch in Willmert Lake (Main Bay)?
Other fish species in the lake include Common Shiner, Fathead Minnow, Freshwater Drum, Golden Shiner, Orangespotted Sunfish, Spotfin Shiner and White Sucker.
What are the closest cities to Willmert Lake (Main Bay)?
Are there places to stay in the Willmert Lake (Main Bay) area?
More Lodging Options
Are there topographical lake maps available Willmert Lake (Main Bay)?
Are there boat launches on Willmert Lake (Main Bay)?
Are there places to eat and drink near Willmert Lake (Main Bay)?
Explore the Willmert Lake (Main Bay) area in a RV
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Pet Friendly Popup Camper for Travel Heat/AC Private Outdoor Bathroom
Brewster, MN
History & Status of the Fishery
A targeted survey of the nearshore fish community in Wilmert Lake was conducted by Fisheries Index of Biological Integrity (IBI) Program Staff starting June 24, 2019. Ten sampling sites were evenly spaced around the lake and each was sampled by backpack electrofishing and seining with a 50-foot seine. Nearshore sampling captured 9 native species of fish. None of these species are intolerant of disturbance and four species are tolerant of disturbance (Bigmouth Buffalo, Black Bullhead, Fathead Minnow, and Orangespotted Sunfish).
Data from this targeted nearshore survey is combined with trap net and gill net data from an August 2018 standard survey to describe the fish community and provide a Fish-based Index of Biological Integrity (FIBI) score. The FIBI uses fish community data to measure a lake's health, and the types of fish species present can help identify any stressors that may be negatively affecting the lake environment. In Minnesota lakes, certain fish species cannot survive without clean water and a healthy habitat (e.g., Iowa Darter and Rock Bass), while other species are tolerant of degraded conditions (e.g., Black Bullhead and Fathead Minnow). The FIBI score, composed of several fish community diversity and composition metrics, indicates the overall health of a lake by comparing it to what is expected for a healthy lake. For additional information on the FIBI, search for "lake index of biological integrity" on the mndnr.gov website.
Data from this survey will contributed biological information about the health of the fish community in Wilmert Lake to the Blue Earth River Watershed assessment of surface waters process completed in coordination with MN Pollution Control Agency.
What is the average air temp for Willmert Lake (Main Bay)?
More Nearby Lakes To Explore
There's more lake's to explore around Willmert Lake (Main Bay)...| DISTANCE | ACRES | MAX DEPTH | |
| Willmert Lake (South Bay) | 0.7 mi | 361 | |
| North Silver Lake | 1.7 mi | 203 | |
| Mud Lake | 2.0 mi | 72 | |
| Mud Lake | 2.5 mi | 37 | |
| South Silver Lake | 2.9 mi | 252 | 22 ft |
| Amber Lake | 3.2 mi | 182 | 19 ft |
| Clayton Lake | 4.2 mi | 499 | |
| Hall Lake | 4.3 mi | 548 | 27 ft |
| Iowa Lake | 4.4 mi | 802 | 9 ft |
| Iowa Lake | 4.6 mi | 705 | 9 ft |


