Pierz Lake
Morrison County, Minnesota, near Genola. DNR lake ID 49002400.
Pierz Lake is a 189.2-acre lake in Morrison County, Minnesota, near Genola. Its deepest point reaches 34 ft, and about 34% of the lake is shallower than 15 feet. Summer water clarity averages 9.8 feet in Minnesota Pollution Control Agency monitoring, which places it in the mesotrophic nutrient class. It is not on the DNR infested waters list as of September 2026. DNR surveys document walleye, northern pike, largemouth bass, smallmouth bass, black crappie, bluegill.
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Quick facts
| DNR lake ID | 49002400 |
|---|---|
| County | Morrison County, near Genola |
| Surface area | 189.2 acres |
| Maximum depth | 34 ft |
| Mean depth | 20.0 ft |
| Share under 15 ft | 34% |
| Water clarity (summer) | 9.8 ft through 2025 |
| Phosphorus (summer) | 17.5 µg/L |
| Algae, chlorophyll-a (summer) | 6.3 µg/L |
| Nutrient class | Mesotrophic |
| Clarity trend | Clearer (2016 to 2025) |
| Invasive species | Not on DNR infested waters list (Sept 2026) |
| Public water accesses | 1 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 9.8 ft, phosphorus 17.5 µg/L, algae (chlorophyll-a) 6.3 µg/L. Using the Carlson trophic state index, Pierz Lake rates as mesotrophic. Summer clarity trend 2016 to 2025: clearer.
Fishing on Pierz Lake
The most recent DNR standard fish survey was in 2020 (6 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 |
|---|---|---|---|
| Walleye | gill | 4.5 | 1.3 to 5.0 |
| Northern pike | gill | 2.0 | 3.5 to 10.5 |
| Yellow perch | gill | 2.0 | 3.4 to 43.6 |
| Black crappie | gill | 1.67 | 0.6 to 3.5 |
| Bluegill | gill | 3.0 | n/a |
| Largemouth bass | gill | 6.0 | 0.3 to 1.7 |
| Smallmouth bass | gill | 0.17 | 0.2 to 1.4 |
| Rock bass | gill | 0.5 | 0.3 to 1.9 |
Walleye catch was within the typical range for similar lakes in that survey.
Largest fish measured in recent DNR samples: Largemouth bass 13.0 in (2022), Northern pike 24.0 in (2022), Walleye 26.0 in (2022), Smallmouth bass 15.0 in (2020).
Game and panfish documented since 2005: Walleye, Northern pike, Largemouth bass, Smallmouth bass, Black crappie, White crappie, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, Rock bass, Green sunfish, Bowfin, Common carp, 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
Not on the Minnesota DNR infested waters list as of September 2026. That means no confirmed listing, not a guarantee the lake is free of invasive species.
Public boat access
- Pierz Lake: 1 concrete slab launch ramp, 1 dock, 6 trailer spaces. 2.5 miles West of Pierz on MN Hwy. 27, then 0.75 mile South on Morrison Co. Rd. #36. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Pelkey Lake 4.3 mi, Morrison County
- Rice Lake 4.9 mi, Morrison County
- Green Prairie Fish Lake 13.6 mi, Morrison County
- Sullivan Lake 15.6 mi, Morrison County
- Round Lake 15.7 mi, Morrison County
- Sebie Lake 16.4 mi, Crow Wing County
- Peavy Lake 17.0 mi, Morrison County
- Round Lake 17.5 mi, Crow Wing County
Questions about Pierz Lake
How deep is Pierz Lake?
Pierz Lake reaches a maximum depth of 34 ft according to Minnesota DNR records. About 34% of the lake is shallower than 15 feet.
How big is Pierz Lake?
Pierz Lake covers about 189.2 acres in Morrison County, Minnesota.
How clear is Pierz Lake?
Summer water clarity on Pierz Lake averages 9.8 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is mesotrophic.
Does Pierz Lake have zebra mussels or other invasive species?
Pierz Lake is not on the Minnesota DNR infested waters list as of September 2026. That means there is no confirmed listing; it is not a guarantee the lake is free of invasive species.
What fish are in Pierz Lake?
Minnesota DNR surveys document walleye, northern pike, largemouth bass, smallmouth bass, black crappie, white crappie, bluegill, yellow perch, pumpkinseed, hybrid sunfish in Pierz Lake. The most recent standard survey was in 2020.
Where is the public boat access on Pierz Lake?
Pierz Lake has 1 public water access site on DNR record: Pierz Lake.
How is the walleye population on Pierz Lake?
In Minnesota DNR net surveys from 1990 to 2020, walleye numbers on Pierz Lake ran mostly within 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 Pierz Lake?
Homes on Pierz 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 Pierz Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Pierz Lake?
Small, quiet water suited to paddling and fishing, about 34% shallow shoreline under 15 feet, and summer clarity around 9.8 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Pierz Lake?
No lake-specific regulation was found for Pierz Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Pierz Lake
Whether you’re buying, selling, or just curious, our team works Morrison County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2020), 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.