Mantrap Lake
Hubbard County, Minnesota, near Emmaville. DNR lake ID 29015100.
Mantrap Lake is a 1,618-acre lake in Hubbard County, Minnesota, near Emmaville. Its deepest point reaches 68 ft, and about 53% of the lake is shallower than 15 feet. Summer water clarity averages 12.8 feet in Minnesota Pollution Control Agency monitoring, which places it in the mesotrophic nutrient class. The DNR lists it for Eurasian watermilfoil. DNR surveys document northern pike, muskellunge, largemouth bass, smallmouth bass, black crappie, bluegill.
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Quick facts
| DNR lake ID | 29015100 |
|---|---|
| County | Hubbard County, near Emmaville |
| Surface area | 1,618 acres |
| Maximum depth | 68 ft |
| Mean depth | 17.0 ft |
| Share under 15 ft | 53% |
| Water clarity (summer) | 12.8 ft through 2025 |
| Phosphorus (summer) | 17.9 µg/L |
| Algae, chlorophyll-a (summer) | 5.0 µg/L |
| Nutrient class | Mesotrophic |
| Invasive species | Eurasian watermilfoil |
| Public water accesses | 2 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 12.8 ft, phosphorus 17.9 µg/L, algae (chlorophyll-a) 5.0 µg/L. Using the Carlson trophic state index, Mantrap Lake rates as mesotrophic.
Fishing on Mantrap Lake
The most recent DNR standard fish survey was in 2022 (4 years ago). Catch per net is compared with the DNR’s typical range for lakes of the same type.
| Species | Net | Catch per net | Typical range |
|---|---|---|---|
| Northern pike | gill | 8.08 | 3.1 to 8.5 |
| Northern pike | trap | 0.73 | n/a |
| Yellow perch | gill | 29.33 | 2.5 to 24.2 |
| Yellow perch | trap | 2.09 | 0.5 to 2.7 |
| Black crappie | gill | 8.92 | 0.5 to 2.7 |
| Black crappie | trap | 2.73 | 0.7 to 3.2 |
| Bluegill | gill | 1.25 | n/a |
| Bluegill | trap | 24.91 | 5.6 to 42.3 |
| Largemouth bass | gill | 0.42 | 0.3 to 1.2 |
| Largemouth bass | trap | 1.55 | 0.3 to 1.1 |
| Muskellunge | gill | 0.08 | 0.2 to 0.6 |
| Muskellunge | trap | 0.18 | 0.1 to 0.4 |
| Tullibee (cisco) | gill | 3.33 | 0.7 to 6.5 |
| Pumpkinseed | gill | 6.58 | n/a |
| Pumpkinseed | trap | 14.09 | 1.7 to 8.2 |
| Rock bass | gill | 0.25 | 0.3 to 2.0 |
| Rock bass | trap | 0.73 | 0.6 to 2.5 |
| Hybrid sunfish | gill | 0.17 | n/a |
| Hybrid sunfish | trap | 0.45 | n/a |
Largest fish measured in recent DNR samples: Muskellunge 50.0 in (2022), Walleye 21.0 in (1999), Northern pike 35.0 in (2022), Largemouth bass 19.0 in (2022), Smallmouth bass 13.0 in (2012).
Game and panfish documented since 2005: Northern pike, Muskellunge, Largemouth bass, Smallmouth bass, Black crappie, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, Rock bass, Tullibee (cisco), White sucker, Yellow bullhead, Brown bullhead, Black bullhead.
Fishing regulations
No lake-specific regulation found in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Regulations change. Confirm with the DNR before fishing.
Invasive species
On the Minnesota DNR infested waters list for: Eurasian watermilfoil (listed 2020).
Public boat access
- Mantrap Lake (S): 2 concrete slab launch ramps, 1 dock, 18 trailer spaces. From Park Rapids, .5 mi E on Mn Hwy 34, then 10.2 mi N on Cnty Rd 4, then 1.5 mi E on Cnty Rd 24, then .4 mi N on Twp Rd, then .2 mi E on Forest Rd to S shore of the SW arm of lake. Directions
- Mantrap Lake (N): 1 natural launch ramp, 8 trailer spaces. From Park Rapids, .5 mi E on Mn Hwy 34, then 10.2 mi N on Cnty Rd 4, then 1.5 mi E on Cnty Rd 24, then 1.7 mi N on Twp Rd, then .2 mi E on Forest Rd to S shore of NE arm of lake. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Bad Axe Lake 1.7 mi, Hubbard County
- Upper Bottle Lake 2.2 mi, Hubbard County
- Stocking Lake 2.4 mi, Hubbard County
- West Crooked Lake 3.1 mi, Hubbard County
- Dead Lake 3.2 mi, Hubbard County
- Lower Bottle Lake 3.4 mi, Hubbard County
- Ojibway Lake 3.4 mi, Hubbard County
- Emma Lake 4.1 mi, Hubbard County
Questions about Mantrap Lake
How deep is Mantrap Lake?
Mantrap Lake reaches a maximum depth of 68 ft according to Minnesota DNR records. About 53% of the lake is shallower than 15 feet.
How big is Mantrap Lake?
Mantrap Lake covers about 1,618 acres in Hubbard County, Minnesota.
How clear is Mantrap Lake?
Summer water clarity on Mantrap Lake averages 12.8 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is mesotrophic.
Does Mantrap Lake have zebra mussels or other invasive species?
The Minnesota DNR infested waters list includes Mantrap Lake for Eurasian watermilfoil.
What fish are in Mantrap Lake?
Minnesota DNR surveys document northern pike, muskellunge, largemouth bass, smallmouth bass, black crappie, bluegill, yellow perch, pumpkinseed, hybrid sunfish, rock bass in Mantrap Lake. The most recent standard survey was in 2022.
Where is the public boat access on Mantrap Lake?
Mantrap Lake has 2 public water access sites on DNR record: Mantrap Lake (S); Mantrap Lake (N).
How is the walleye population on Mantrap Lake?
In Minnesota DNR net surveys from 1991 to 1999, walleye numbers on Mantrap Lake ran mostly below the typical range for similar lakes. Nets measure how many fish a lake holds, not where they’re biting, so local guides are the best source for current fishing.
Are there lake homes for sale on Mantrap Lake?
Homes on Mantrap Lake come up for sale throughout the year, and some sell before they’re ever publicly advertised. Tell us what you’re looking for and our agents will run a custom search and send you matching homes on Mantrap Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Mantrap Lake?
A mid-size lake with room for boating and fishing, about 53% shallow shoreline under 15 feet, and summer clarity around 12.8 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Mantrap Lake?
No lake-specific regulation was found for Mantrap Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Mantrap Lake
Whether you’re buying, selling, or just curious, our team works Hubbard County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2022), DNR infested waters list (Sept 2026), Minnesota Rules 6264.0400 (April 2026), MPCA monitoring via the Water Quality Portal, DNR water access records (2023), LAGOS-US. Lakewide information from public data; it does not describe any specific property. Verify shoreline, bottom type, and depth at any frontage.