Trident Lake
Lake County, Minnesota93 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Trident Lake. Here is what has been measured.
- 14 ft max depth
- Limited data
Trident Lake in Lake County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.5 ft visibility. Maximum depth: 14 ft. Surface area: 93.35 acres.
Minnesota DNR's Standard Survey on June 26, 2000 caught 3.00 walleye per gill net at Trident Lake. Length samples in the latest survey that recorded them ran 12–22 inches. DNR survey details →
Trident Lake is a 93-acre lake in Lake County, Minnesota with a maximum depth of 14 feet. Overall water quality is improving over recent sampling years. The lake supports 9 documented fish species including bluegill, hybrid sunfish, and northern pike. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-06-14. Methodology: how these readings are compared.
Trident Lake covers about 93 acres in Lake County. For a place on the water, look through cabin and lake-house rentals near Trident Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Trident Lake is good for
From access and monitoring records, not editorial picks.
- Fishing9 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Trident 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 Trident Lake
These are the measurements Minnesota PCA publishes for Trident Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.5 ft. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.5ft | 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. | 50 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Trident Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on June 26, 2000 caught 3.00 walleye per gill net at Trident Lake. Length samples in the latest survey that recorded them ran 12–22 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Trident Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 2000-06-26 (Standard Survey).
1 survey on file · most recent 2000-06-26 (Standard Survey)
26 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 14.00 | 4–9 in 2000-06-26 | 0.28 lb |
| Northern Pike | 8.67 | 10–36 in 2000-06-26 | 3.15 lb |
| Yellow Perch | 6.33 | 5–6 in 2000-06-26 | 0.09 lb |
| White Sucker | 5.33 | 9–21 in 2000-06-26 | 1.41 lb |
| Walleye | 3.00 | 12–22 in 2000-06-26 | 1.29 lb |
| Hybrid Sunfish | 1.00 | 4–8 in 2000-06-26 | 0.38 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
Northern Pike
Yellow Perch
White Sucker
From the 2000-06-26 survey
Trident Lake is in Ecological Lake Class 12, which consists of 90 lakes in northeast Minnesota that are small, shallow, and have soft (unmineralized) water. Trident Lake is ranked as mesotrophic, according to Carlson's Trophic State Index.Trident Lake is entirely within a non-motorized portion of the Boundary Water…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Trident Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — TridentFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
14 ft
Surface area
93 acres
Shoreline
2.6 mi
Littoral zone
100%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,358 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Trident Lake
Compare lakeside cabins, hotels, and vacation rentals near Trident Lake in Lake 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 Trident Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Trident Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Trident Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2025).
Water clarity
Improving5 years
Nearby Lakes in Lake County
Frequently asked questions about Trident Lake
Where is Trident Lake?
- Trident Lake is a lake in Lake County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Trident Lake?
- Trident Lake in Lake County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.5 ft visibility. Maximum depth: 14 ft. Surface area: 93.35 acres.
Is Trident Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Trident Lake?
- Trident Lake has a maximum depth of 14 feet. The lake covers 93.35 acres.
What fish are in Trident Lake?
- Fish species found in Trident Lake include bluegill, hybrid sunfish, northern pike, pumpkinseed, rock bass, smallmouth bass, walleye, white sucker, yellow perch. Trident Lake is located in Lake County, Minnesota.
What did the DNR fisheries survey find at Trident Lake?
- Minnesota DNR's Standard Survey on June 26, 2000 caught 3.00 walleye per gill net at Trident Lake. Length samples in the latest survey that recorded them ran 12–22 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Trident Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Trident Lake?
- Public access to Trident 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 Trident Lake across LakeQuality
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Where this data comes from
5 measurements from 2 monitoring stations, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA5 samples · 2023–2025
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (2)
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 size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder