Dart Lake
Becker County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Dart Lake. Here is what has been measured.
- Eutrophic
- Limited data
Dart Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 61 µg/L. Chlorophyll-a (algae): 22.7 µg/L.
Dart Lake is a productive, nutrient-rich eutrophic lake in Becker County, Minnesota. Overall water quality is improving over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted. Compared to the 83 other monitored lakes in Becker County, Dart Lake ranks #76 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-08-17. Methodology: how these readings are compared.
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 Dart 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 Dart Lake
These are the measurements Minnesota PCA publishes for Dart Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. Phosphorus 61 µg/L. Chlorophyll-a 22.7 µg/L. TSI 62.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 61µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 22.7µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 62 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Dart Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Dart Lake typically sits around 72°F at the surface in August. Summer average is about 71°F. Usually warmest in Jul (about 73°F) and coldest in Jun (about 68°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (68°F) to its warmest (73°F).
Typical surface water temperature by month, from 45 field readings (2011–2021) via the EPA Water Quality Portal. See the full Dart Lake water temperature breakdown →
Stays via Stay22
Stays near Dart Lake
Compare lakeside cabins, hotels, and vacation rentals near Dart Lake in Becker 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Dart Lake are listed below.
Top-rated places to stay near Dart Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Minnesota’s top lakes →
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Fishing Dart Lake
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving6 years
Phosphorus
Improving-3.66 µg/L/yr6 years
Chlorophyll-a
Improving-1.32 µg/L/yr6 years
Nearby Lakes in Becker County
Frequently asked questions about Dart Lake
Where is Dart Lake?
- Dart Lake is a lake in Becker County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Dart Lake?
- Dart Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 61 µg/L. Chlorophyll-a (algae): 22.7 µg/L.
Is Dart 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 Dart Lake?
- Dart Lake typically sits around 72°F at the surface in August, from 45 EPA Water Quality Portal field readings (2011–2021). That is a typical value for the month, not a live reading.
Can I fish at Dart Lake?
- Public access to Dart 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 Dart Lake across LakeQuality
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Where this data comes from
23 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
MNPCA23 samples · 2021
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.