Is Isabella Lake Safe for Swimming?
Isabella Lake in Lake County, Minnesota has nutrient and algae measurements on record from state and federal monitoring. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Water clarity: 4.4 ft visibility. Phosphorus: 19 µg/L. Chlorophyll-a (algae): 5.8 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 4.4 ft |
| Phosphorus | 19 μg/L |
| Chlorophyll-a (Algae) | 5.8 μg/L |
| Maximum Depth | 19 ft |
| Location | Lake County, Minnesota |
How does Isabella Lake compare?
With an overall water-quality readings of —, Isabella Lake matches or beats the Minnesota state average. It ranks #9 of 35 lakes in Lake County by water quality score.
Water clarity (Secchi depth) sits at 4.4 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 5.8 µg/L — low and well within safe swimming guidelines.
Watch Isabella Lake water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.