Grave Lake
Cass County, Minnesota373 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Grave Lake. Here is what has been measured.
- 55 ft max depth
- Public access
- Limited data
Grave Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 17.2 ft visibility. Maximum depth: 55 ft. Surface area: 372.81 acres.
Minnesota DNR's Targeted Survey on July 1, 2021 caught 2.26 largemouth bass per hour of electrofishing at Grave Lake. DNR survey details →
Grave Lake is a 373-acre lake in Cass County, Minnesota with a maximum depth of 55 feet. Overall water quality is improving over recent sampling years. The lake supports 8 documented fish species including bluegill, hybrid sunfish, and largemouth bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-09-08. Methodology: how these readings are compared.
What Grave Lake is good for
From access and monitoring records, not editorial picks.
- Clear water17.2 ft of visibility
- Boat launch1 documented ramp
- Fishing8 species recorded
- Deep water55 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Grave Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Grave Lake
These are the measurements Minnesota PCA publishes for Grave Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 17.2 ft down. TSI 36.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 17.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 36 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Grave Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Targeted Survey on July 1, 2021 caught 2.26 largemouth bass per hour of electrofishing at Grave Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Grave Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
9 surveys on file from MN DNR Fisheries. Most recent: 2021-07-01 (Targeted Survey).
9 surveys on file · most recent 2021-07-01 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 19.08 | 2–9 in 2021-06-16 | 0.15 lb |
| Bluntnose Minnow | 8.29 | ||
| Yellow Perch | 5.65 | 5 in 2021-06-16 | 0.12 lb |
| Northern Pike | 4.27 | 14–27 in 2021-06-16 | 2.02 lb |
| Rock Bass | 3.76 | 3–8 in 2021-06-16 | 0.3 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Bluegill
Yellow Perch
Northern Pike
Rock Bass
From the 2021-07-01 survey
Grave Lake (DOW# 11-0086; Lake Class 23) is a 372-acre lake with 132 littoral acres located north of Remer, MN. There is a DNR owned public access on the east shore. Grave Lake has 6.20 miles of shoreline and a maximum depth of 55 feet. The DNR has classified Minnesota's lakes into 43 different classes based on…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Grave Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — GraveFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Grave (1493)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — GraveFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — GravePublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
55 ft
Surface area
373 acres
Shoreline
6.2 mi
Littoral zone
35%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Recreation & Access
- Grave LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Grave Lake
Compare lakeside cabins, hotels, and vacation rentals near Grave Lake in Cass County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Grave Lake
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Follow Grave Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Grave Lake
Water quality readings over time
3 seasons of samples on record (2021–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Nearby Lakes in Cass County
Frequently asked questions about Grave Lake
Where is Grave Lake?
- Grave Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Grave Lake?
- Grave Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 17.2 ft visibility. Maximum depth: 55 ft. Surface area: 372.81 acres.
Is Grave Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Grave Lake?
- Grave Lake has a maximum depth of 55 feet. The lake covers 372.81 acres.
What fish are in Grave Lake?
- Fish species found in Grave Lake include bluegill, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, yellow perch. Grave Lake is located in Cass County, Minnesota.
What did the DNR fisheries survey find at Grave Lake?
- Minnesota DNR's Targeted Survey on July 1, 2021 caught 2.26 largemouth bass per hour of electrofishing at Grave Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Grave Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Grave Lake?
- Grave Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Grave Lake. Public access is listed as yes.
Can I fish at Grave Lake?
- Grave Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Grave Lake across LakeQuality
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Where this data comes from
4 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA4 samples · 2021
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory