Is Lake St Croix Safe for Swimming?
Lake St Croix in St. Croix County, Wisconsin 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: 5.6 ft visibility. Phosphorus: 30 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft |
| Phosphorus | 30 μg/L |
| Maximum Depth | 60 ft |
| Location | St. Croix County, Wisconsin |
How does Lake St Croix compare?
On nutrient and algae readings, Lake St Croix matches or beats the Wisconsin state average. It ranks #1 of 5 lakes in St. Croix County on nutrient and algae readings.
Water clarity (Secchi depth) sits at 5.6 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
Stays via Stay22
Where to stay near Lake St Croix
Compare cabins, hotels, and vacation rentals near Lake St Croix in St. Croix County, Wisconsin. Live availability and prices for your nights. Switch the map to Satellite to see how close each stay is to the water.
Top-rated places to stay near Lake St Croix
Prices for Nov 6–8, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Lake St Croix?
Get lake water-quality updates plus the best cabin & lodging deals near Lake St Croix — straight to your inbox. No spam, unsubscribe anytime.
Watch Lake St Croix water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.