Spider Lake
Cass County, Minnesota, near Pine River. DNR lake ID 11050000.
Spider Lake is a 144.9-acre lake in Cass County, Minnesota, near Pine River. Its deepest point reaches 17 ft, and about 52% of the lake is shallower than 15 feet. Summer water clarity averages 10.7 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, black crappie, yellow perch.
Buying or selling on Spider 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 | 11050000 |
|---|---|
| County | Cass County, near Pine River |
| Surface area | 144.9 acres |
| Maximum depth | 17 ft |
| Share under 15 ft | 52% |
| Water clarity (summer) | 10.7 ft through 2020 |
| Phosphorus (summer) | 15.5 µg/L |
| Algae, chlorophyll-a (summer) | 4.7 µg/L |
| Nutrient class | Mesotrophic |
| 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 2020: clarity 10.7 ft, phosphorus 15.5 µg/L, algae (chlorophyll-a) 4.7 µg/L. Using the Carlson trophic state index, Spider Lake rates as mesotrophic.
Fishing on Spider Lake
The most recent DNR standard fish survey was in 2017 (9 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 | 1.83 | 0.5 to 3.8 |
| Northern pike | gill | 5.0 | 4.5 to 11.3 |
| Northern pike | trap | 0.44 | n/a |
| Yellow perch | gill | 11.17 | 2.5 to 24.8 |
| Yellow perch | trap | 0.11 | 0.5 to 5.3 |
| Black crappie | gill | 3.33 | 1.0 to 11.8 |
| Black crappie | trap | 7.0 | 1.2 to 4.8 |
| Largemouth bass | gill | 4.33 | 0.5 to 1.5 |
| Largemouth bass | trap | 1.44 | 0.3 to 1.3 |
| Pumpkinseed | gill | 3.67 | n/a |
| Pumpkinseed | trap | 2.56 | 1.7 to 10.3 |
Walleye catch was within the typical range for similar lakes in that survey.
Largest fish measured in recent DNR samples: Largemouth bass 22.0 in (2017), Walleye 25.0 in (2017), Northern pike 32.0 in (2017).
Game and panfish documented since 2005: Walleye, Northern pike, Largemouth bass, Black crappie, Yellow perch, Pumpkinseed, White sucker, Brown 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
- Spider Lake: 1 concrete slab launch ramp, 1 dock, 6 trailer spaces. 24 mi N of Motley, 2 mi E on CSAH 20, Foothills State Forest, on NW shore of Spider Lake. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Fish Lake 2.1 mi, Cass County
- Green Lake 2.4 mi, Cass County
- Deer Lake 4.7 mi, Cass County
- Cut Lake 5.1 mi, Cass County
- Perch Lake 10.5 mi, Cass County
- Boot Lake 11.1 mi, Cass County
- Sleepy Island Lake 11.9 mi, Cass County
- Eagle Lake 12.1 mi, Cass County
Questions about Spider Lake
How deep is Spider Lake?
Spider Lake reaches a maximum depth of 17 ft according to Minnesota DNR records. About 52% of the lake is shallower than 15 feet.
How big is Spider Lake?
Spider Lake covers about 144.9 acres in Cass County, Minnesota.
How clear is Spider Lake?
Summer water clarity on Spider Lake averages 10.7 feet (Secchi depth) in MPCA monitoring through 2020. Its trophic state is mesotrophic.
Does Spider Lake have zebra mussels or other invasive species?
Spider 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 Spider Lake?
Minnesota DNR surveys document walleye, northern pike, largemouth bass, black crappie, yellow perch, pumpkinseed, white sucker, brown bullhead in Spider Lake. The most recent standard survey was in 2017.
Where is the public boat access on Spider Lake?
Spider Lake has 1 public water access site on DNR record: Spider Lake.
How is the walleye population on Spider Lake?
In Minnesota DNR net surveys from 1994 to 2017, walleye numbers on Spider 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 Spider Lake?
Homes on Spider 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 Spider Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Spider Lake?
Small, quiet water suited to paddling and fishing, about 52% shallow shoreline under 15 feet, and summer clarity around 10.7 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Spider Lake?
No lake-specific regulation was found for Spider Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Spider Lake
Whether you’re buying, selling, or just curious, our team works Cass County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2017), 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.