Dragon Lake
Dragon Lake in Lake County, Minnesota has a water quality grade of B (Good). 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.
- Clarity
- 7.5 ft
- Typical in August
- 71°F
- Max depth
- 15 ft
- Area
- 79 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
- Public access
- Yes
Next lake in Lake County
Dragon Lake is a 79-acre mesotrophic lake in Lake County, Minnesota with a maximum depth of 15 feet. Water quality is graded B based on 2 sampling years through 2025. 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. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Moderate clarity, visible to about 7.5 ft. Phosphorus level: 17.5 µg/L. Chlorophyll-a: 7.3 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.5 ft | Not graded |
| Phosphorus | 17.5 µg/L | Good |
| Chlorophyll-a (Algae) | 7.3 µg/L | Good |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Dragon Lake
Compare lakeside cabins, hotels, and vacation rentals near Dragon 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 Dragon Lake
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Water Temperature
Dragon Lake typically sits around 71°F at the surface in August. 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.
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
| Characteristic | Value |
|---|---|
| Maximum Depth | 15 ft |
| Surface Area | 79 acres |
| Shoreline Length | 2.1 mi |
| Littoral Zone | 99% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Dragon Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.12 m/yr | 2 |
EPA Impairment Status
Dragon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MN38-0554-00 · Official waterbody report · Matched by proximity (1.19 km)
County Ranking
Ranked #24 of 35 lakes in Lake County
Nearby Lakes in Lake County
Frequently asked questions about Dragon Lake
What is the water quality grade for Dragon Lake?
- Dragon Lake in Lake County, Minnesota has a water quality grade of B (Good). 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?
- Good for swimming, clear water with low algae levels. Dragon Lake has a water quality grade of B (Good). Algae concentration (chlorophyll-a) is 7.3 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Dragon Lake?
- Dragon Lake typically sits around 71°F at the surface in August, 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.
Explore Dragon Lake across LakeGrade
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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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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