Dragon Lake
Lake County, Minnesota79 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Dragon Lake. Here is what has been measured.
- Mesotrophic
- 15 ft max depth
- Public access
- Limited data
Dragon Lake in Lake County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 7.5 ft visibility. Phosphorus: 17.5 µg/L. Chlorophyll-a (algae): 7.3 µg/L. Maximum depth: 15 ft. Surface area: 79.15 acres.
Dragon Lake is a 79-acre mesotrophic lake in Lake County, Minnesota with a maximum depth of 15 feet. Overall water quality is improving over recent sampling years. The lake supports 10 documented fish species including black crappie, bluegill, and brook trout. Public access is available. Compared to the 34 other monitored lakes in Lake County, Dragon Lake ranks #24 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-12. Methodology: how these readings are compared.
What Dragon Lake is good for
From access and monitoring records, not editorial picks.
- Fishing10 species recorded
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether Dragon 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 Dragon Lake
These are the measurements Minnesota PCA publishes for Dragon 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 7.5 ft. Phosphorus 17.5 µg/L. Chlorophyll-a 7.3 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 17.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 7.3µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Dragon Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Dragon Lake typically sits around 59°F at the surface in September. Summer average is about 67°F. Usually warmest in Aug (about 71°F) and coldest in Sep (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (71°F).
Typical surface water temperature by month, from 17 field readings (2025–2025) via the EPA Water Quality Portal. See the full Dragon Lake water temperature breakdown →
Lake Details
Max depth
15 ft
Surface area
79 acres
Shoreline
2.1 mi
Littoral zone
99%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
30 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,680 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Dragon Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Dragon Lake
Water quality readings over time
2 seasons of samples on record (2020–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Nearby Lakes in Lake County
Frequently asked questions about Dragon Lake
Where is Dragon Lake?
- Dragon 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 Dragon Lake?
- Dragon Lake in Lake County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 7.5 ft visibility. Phosphorus: 17.5 µg/L. Chlorophyll-a (algae): 7.3 µg/L. Maximum depth: 15 ft. Surface area: 79.15 acres.
Is Dragon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Dragon Lake?
- Dragon Lake typically sits around 59°F at the surface in September, from 17 EPA Water Quality Portal field readings (2025–2025). That is a typical value for the month, not a live reading.
How deep is Dragon Lake?
- Dragon Lake has a maximum depth of 15 feet. The lake covers 79.15 acres.
What fish are in Dragon Lake?
- Fish species found in Dragon Lake include black crappie, bluegill, brook trout, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, white sucker, yellow perch. Dragon Lake is located in Lake County, Minnesota.
Can I fish at Dragon Lake?
- Public access to Dragon Lake is listed as yes on the lake record. 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 Dragon Lake across LakeQuality
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Fish species and best lakes in Lake County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
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Where this data comes from
18 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA18 samples · 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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder