IceLens
Ice safety technology for winter anglers. Get real-time ice thickness estimates, safety ratings, and conditions for any location.
How IceLens Works
Ice Thickness Estimates
Get physics-based ice thickness estimates using the Stefan equation and real weather data from your location.
Safety Ratings
Clear safety ratings for each activity - walking, snowmobiling, or driving - so you know at a glance if conditions are safe.
Any Location
Check ice conditions for any lake using coordinates. Get localized estimates based on actual weather patterns.
Weather Analysis
45 days of historical weather data combined with current conditions for accurate freezing degree day calculations.
Ice Thickness Safety Guide
These thresholds are for clear, solid ice. White/snow ice is approximately 50% weaker. Always check local conditions and use caution.
The Science Behind IceLens
IceLens uses the Stefan equation, a physics-based model developed in the late 1800s that relates ice thickness to cumulative freezing temperatures. The core formula is:
h = α × √(FDD)Where h is ice thickness in inches, α is a growth coefficient (typically 0.8-1.5), and FDD is Freezing Degree Days – the sum of degrees below 32°F for each day.
Our model adjusts for snow cover (which insulates and slows ice growth), wind exposure (which delays initial freezing), and solar radiation (which can thin ice even in sub-freezing temperatures). We analyze 45 days of historical weather data to give you accurate estimates.
Important Safety Disclaimer
IceLens provides estimates based on weather data and physics models. Ice thickness varies significantly across any lake due to currents, springs, pressure cracks, and other factors. Always drill test holes, check ice locally, wear appropriate safety gear, and never venture onto ice alone. When in doubt, stay off the ice.