Lake · St. Louis County · MN
Is Eagles Nest Lake Number Three safe to swim?
No advisory or algae bloom reported for this water today.
Updated August 20, 2026 · EPA CyAN satellite
No bacteria advisory or sampling for this water.
No blue-green algae bloom detected in the latest clear satellite image. This is a satellite estimate, not a safety guarantee, and does not replace an official advisory.
SwimZone for iPhone · launching soon
Eagles Nest Lake Number Three is clear today. Be the first to know when it's not.
SwimZone checks this water every day and pings you the moment a bacteria or algae advisory goes up.
What's in the water at Eagles Nest Lake Number Three right now
As of August 20, 2026, Eagles Nest Lake Number Three in St. Louis County, Minnesota has no advisory posted. EPA's CyAN satellite detected no blue-green algae bloom in the latest clear image (August 19, 2026), which is an estimate, not a guarantee. Modeled rainfall over the past week was about 0.3 in (Open-Meteo, a gridded estimate that can differ from a local gauge), which can wash bacteria and nutrients into the water.
Blue-green algae at Eagles Nest Lake Number Three
Eagles Nest Lake Number Three is a lake in St. Louis County, Minnesota covering about 1.6 sq mi, the 259th-largest of the 975 lakes SwimZone monitors in Minnesota. EPA's CyAN satellite detected no blue-green algae bloom in the latest clear image (August 19, 2026), which is an estimate, not a guarantee.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Bloom history at Eagles Nest Lake Number Three
From EPA CyAN's satellite archive
Each bar is that summer's peak EPA CyAN satellite estimate (log scale); the red cap is the part above the bloom-level threshold. Satellite estimates, not water samples or posted advisories.
Over 7 summers of EPA CyAN satellite imagery since 2020, Eagles Nest Lake Number Three has shown a satellite-estimated bloom-level signal in 1 of them, most recently in September 2025. Those signals have been occasional rather than annual. Its highest satellite estimate was about 610,000 cells/mL in September 2025. These are satellite estimates, not water samples or posted advisories; check your state or county health department for official status.
When to swim at Eagles Nest Lake Number Three
It is currently peak season for blue-green algae, when warm, calm water lets blooms form fastest. This lake has bloomed in 1 of 7 monitored summers, historically peaking around September. Early summer, before the water fully warms, has generally been the safer window here; check the current read before you go either way.
Frequently asked: swimming in Eagles Nest Lake Number Three
- Is it safe to swim in Eagles Nest Lake Number Three right now?
- Eagles Nest Lake Number Three has no advisory posted today. EPA's CyAN satellite detected no blue-green algae bloom in the latest clear image (August 19, 2026), which is an estimate, not a guarantee. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does Eagles Nest Lake Number Three have blue-green algae (cyanobacteria)?
- EPA's CyAN satellite detected no blue-green algae bloom at Eagles Nest Lake Number Three in the latest clear image (August 19, 2026). This is a satellite estimate below the sensor's detection limit, not a guarantee: cyanobacteria can appear within hours in warm, calm, nutrient-rich water, so look before you swim.
- Can dogs swim in Eagles Nest Lake Number Three?
- No bloom is detected at Eagles Nest Lake Number Three today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How often does Eagles Nest Lake Number Three have blue-green algae blooms?
- Over 7 summers of EPA CyAN satellite imagery since 2020, Eagles Nest Lake Number Three has shown a satellite-estimated bloom-level signal in 1 of them, most recently in September 2025. Those signals have been occasional rather than annual. Its highest satellite estimate was about 610,000 cells/mL in September 2025. These are satellite estimates, not water samples or posted advisories; check your state or county health department for official status.
- How many Minnesota lakes and beaches are unsafe for swimming today?
- Today, 0 Minnesota waters are above a safe-contact threshold and 451 more warrant caution, out of 1178 monitored waters SwimZone tracks in the state.
- How is Eagles Nest Lake Number Three's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors Eagles Nest Lake Number Three, and a recent-rainfall overlay, all refreshed daily. It was last updated August 20, 2026.
Before you swim: the basics
Swim spots near Eagles Nest Lake Number Three
All Minnesota →All 6 monitored waters nearest Eagles Nest Lake Number Three are clear today.
| Water | Distance | Today | Algae read | Sampled |
|---|---|---|---|---|
| Eagles Nest Lake Number 2Lake · St. Louis County | 1.1 mi | No advisory | None detected | Aug 19 |
| Bear Head LakeLake · St. Louis County | 2.3 mi | No advisory | None detected | Aug 19 |
| Armstrong LakeLake · St. Louis County | 2.5 mi | No advisory | None detected | Aug 19 |
| Wolf LakeLake · St. Louis County | 5.7 mi | No advisory | None detected | Jul 21 |
| Bear Island LakeLake · St. Louis County | 5.9 mi | No advisory | None detected | Aug 19 |
| Crab LakeLake · St. Louis County | 8.9 mi | No advisory | None detected | Jul 21 |