Block Lake
Otter Tail County, Minnesota, near Urbank. DNR lake ID 56007900.
Block Lake is a 289.8-acre lake in Otter Tail County, Minnesota, near Urbank. Its deepest point reaches 23 ft, and about 46% of the lake is shallower than 15 feet. Summer water clarity averages 5.8 feet in Minnesota Pollution Control Agency monitoring, which places it in the eutrophic nutrient class. It is not on the DNR infested waters list as of September 2026. DNR surveys document walleye, northern pike, largemouth bass, black crappie, bluegill, yellow perch.
Buying or selling on Block Lake? Ask us what lakeshore here actually sells for, which stretches of shoreline buyers compete for, and what’s coming up before it’s listed.
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Quick facts
| DNR lake ID | 56007900 |
|---|---|
| County | Otter Tail County, near Urbank |
| Surface area | 289.8 acres |
| Maximum depth | 23 ft |
| Share under 15 ft | 46% |
| Water clarity (summer) | 5.8 ft through 2018 |
| Phosphorus (summer) | 52.8 µg/L |
| Algae, chlorophyll-a (summer) | 29.8 µg/L |
| Nutrient class | Eutrophic |
| 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 2018: clarity 5.8 ft, phosphorus 52.8 µg/L, algae (chlorophyll-a) 29.8 µg/L. Using the Carlson trophic state index, Block Lake rates as eutrophic.
Fishing on Block Lake
The most recent DNR standard fish survey was in 2001 (25 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 | 7.4 | 1.2 to 5.3 |
| Northern pike | gill | 1.6 | 2.3 to 9.2 |
| Yellow perch | gill | 164.4 | 3.7 to 28.4 |
| Black crappie | gill | 4.6 | 0.8 to 8.4 |
| Bluegill | gill | 0.4 | n/a |
| Pumpkinseed | gill | 0.8 | n/a |
Walleye catch was above the typical range for similar lakes in that survey.
Largest fish measured in recent DNR samples: Northern pike 29.0 in (2015), Walleye 26.0 in (2015), Largemouth bass 20.0 in (2022).
Game and panfish documented since 2005: Walleye, Northern pike, Largemouth bass, Black crappie, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, 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
- Block Lake: 1 concrete slab launch ramp, 1 dock, 2 trailer spaces. 0.5 mi N of Parkers Prairie on MN Hwy 29, then 7 mi W on Cnty Rd 6 to NE shore. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Fish Lake 4.4 mi, Otter Tail County
- Nelson Lake 4.8 mi, Otter Tail County
- Trulse Lake 5.8 mi, Otter Tail County
- Siverson Lake 6.6 mi, Otter Tail County
- Spitzer Lake 6.7 mi, Otter Tail County
- Ellingson Lake 7.0 mi, Otter Tail County
- Adley Lake 7.6 mi, Otter Tail County
- Belmont Lake 7.7 mi, Otter Tail County
Questions about Block Lake
How deep is Block Lake?
Block Lake reaches a maximum depth of 23 ft according to Minnesota DNR records. About 46% of the lake is shallower than 15 feet.
How big is Block Lake?
Block Lake covers about 289.8 acres in Otter Tail County, Minnesota.
How clear is Block Lake?
Summer water clarity on Block Lake averages 5.8 feet (Secchi depth) in MPCA monitoring through 2018. Its trophic state is eutrophic.
Does Block Lake have zebra mussels or other invasive species?
Block 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 Block Lake?
Minnesota DNR surveys document walleye, northern pike, largemouth bass, black crappie, bluegill, yellow perch, pumpkinseed, hybrid sunfish, white sucker, yellow bullhead in Block Lake. The most recent standard survey was in 2001.
Where is the public boat access on Block Lake?
Block Lake has 1 public water access site on DNR record: Block Lake.
How is the walleye population on Block Lake?
In Minnesota DNR net surveys from 1991 to 2001, walleye numbers on Block 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 Block Lake?
Homes on Block 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 Block Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Block Lake?
Small, quiet water suited to paddling and fishing, about 46% shallow shoreline under 15 feet, and summer clarity around 5.8 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Block Lake?
No lake-specific regulation was found for Block Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Block Lake
Whether you’re buying, selling, or just curious, our team works Otter Tail County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2001), 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.