Marquette Lake
Beltrami County, Minnesota528 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Marquette Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
- zebra mussel
- 51 ft max depth
Marquette Lake in Beltrami County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 9.2 ft visibility. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 8.9 µg/L. Maximum depth: 51 ft. Surface area: 527.56 acres.
Minnesota DNR's Targeted Survey on September 7, 2022 caught 0.58 northern pike per hour of electrofishing at Marquette Lake. DNR survey details →
Marquette Lake is a 528-acre mesotrophic lake in Beltrami County, Minnesota with a maximum depth of 51 feet. Overall water quality is improving over recent sampling years. The lake supports 18 documented fish species including black bullhead, black crappie, and bluegill. No public access — the lake is private or restricted. Compared to the 84 other monitored lakes in Beltrami County, Marquette Lake ranks #73 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-30. Methodology: how these readings are compared.
Marquette Lake covers about 530 acres in Beltrami County. Vrbo is where to look for cabins and lake homes around Marquette Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Marquette Lake is good for
From access and monitoring records, not editorial picks.
- Fishing18 species recorded
- Deep water51 ft surveyed max depth
Swimming conditions
Readings onlyModerate algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Marquette Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Marquette 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 Marquette Lake
These are the measurements Minnesota PCA publishes for Marquette Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 9.2 ft. Phosphorus 24 µg/L. Chlorophyll-a 8.9 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 24µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 8.9µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Marquette Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Marquette Lake typically sits around 66°F at the surface in September. Summer average is about 68°F. Usually warmest in Jul (about 70°F) and coldest in May (about 58°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (58°F) to its warmest (70°F).
Typical surface water temperature by month, from 77 field readings (2018–2025) via the EPA Water Quality Portal. See the full Marquette Lake water temperature breakdown →
Minnesota DNR's Targeted Survey on September 7, 2022 caught 0.58 northern pike per hour of electrofishing at Marquette Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Marquette Lake’s water-quality measurements separately, and the water-quality trend over 6 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: 2025-08-05 (Targeted Survey).
9 surveys on file · most recent 2025-08-05 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| White Sucker | 53.15 | 10–20 in 2022-07-11 | 2.37 lb |
| Yellow Perch | 45.22 | 4–11 in 2022-07-11 | 0.18 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.
White Sucker
Yellow Perch
From the 2025-08-05 survey
Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Marquette Lake on August 5th, 2025, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee, the most sensitive coldwater species present in this…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Marquette Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — MarquetteFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
51 ft
Surface area
528 acres
Shoreline
5.6 mi
Littoral zone
54%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
171 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,329 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Marquette Lake
Compare lakeside cabins, hotels, and vacation rentals near Marquette Lake in Beltrami 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 Marquette Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Follow Marquette Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Marquette Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Stable6 years
Phosphorus
Improving-2.16 µg/L/yr6 years
Chlorophyll-a
Improving-0.25 µg/L/yr6 years
EPA Impairment Status
Marquette Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN04-0142-00 · Official waterbody report
Nearby Lakes in Beltrami County
Frequently asked questions about Marquette Lake
Where is Marquette Lake?
- Marquette Lake is a lake in Beltrami County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Marquette Lake?
- Marquette Lake in Beltrami County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 9.2 ft visibility. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 8.9 µg/L. Maximum depth: 51 ft. Surface area: 527.56 acres.
Is Marquette Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Marquette Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Marquette Lake?
- Marquette Lake typically sits around 66°F at the surface in September, from 77 EPA Water Quality Portal field readings (2018–2025). That is a typical value for the month, not a live reading.
How deep is Marquette Lake?
- Marquette Lake has a maximum depth of 51 feet. The lake covers 527.56 acres.
What fish are in Marquette Lake?
- Fish species found in Marquette Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, redhorse, rock bass, shorthead redhorse, tullibee (cisco), walleye, white sucker, yellow bullhead, yellow perch. Marquette Lake is located in Beltrami County, Minnesota.
What did the DNR fisheries survey find at Marquette Lake?
- Minnesota DNR's Targeted Survey on September 7, 2022 caught 0.58 northern pike per hour of electrofishing at Marquette Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Marquette Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Marquette Lake?
- Public access to Marquette Lake is listed as no on the lake record, so confirm before you make the trip. 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 Marquette Lake across LakeQuality
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Where this data comes from
92 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA92 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder