Staying safe on frozen waters

As winter settles in, our lakes and rivers transform into frozen playgrounds where ice fishing, snowmachining, and driving across icy expanses become woven into daily life. Yet beneath this winter wonderland lies a hidden danger that claims lives every year across the state.

Too many gauge ice safety by following someone else’s tracks, and this is a gamble that can prove fatal. Ice thickness varies dramatically across a single body of water, affected by currents, springs, and fluctuating temperatures. What was safe yesterday may be deadly today.

You might wonder who checks the ice and decides when it’s safe. Actually, no government agency regularly tests ice thickness on our local lakes and rivers. The Alaska Department of Transportation maintains some official ice roads, but for most water crossings you have to check conditions for yourself. This means understanding ice safety is not just helpful; it’s essential for survival.

Ice roads are specially maintained routes across frozen lakes and rivers. The Mat-Su Borough does not maintain or monitor the ice roads. These ice roads are maintained by trails groups volunteers who monitor ice conditions and ice thickness. Trails groups also post notices when extra caution is needed. They typically open when the ice reaches a safe thickness, around 12 inches deep, and close when the spring thaw begins. However, even on maintained ice roads, conditions can change quickly.

So when is ice actually safe? The general rule is that new, clear ice needs to be at least four inches thick for walking and ice fishing. For snowmobiles and ATVs, you need at least five inches. Small cars require eight to twelve inches, while larger trucks need twelve to fifteen inches. However, these are minimum guidelines for perfect conditions, which rarely exist in nature.

Understanding ice quality matters as much as thickness. Clear blue or black ice is strongest. White or opaque ice contains air bubbles and is only half as strong as clear ice. Gray ice indicates the presence of water and is very dangerous. Ice never freezes uniformly across a body of water. Areas near shore, around vegetation, near inlet or outlet streams, and over moving water are always weaker. A water current or spring under ice can create thin spots that are impossible to see from above.

Temperature changes create additional hazards. When temperatures fluctuate above and below freezing, ice weakens significantly. Fresh snow acts like an insulating blanket, actually slowing ice formation and sometimes melting the top layer. After several warm days, ice that seemed solid last week might now be dangerously thin.

Before heading out onto any ice, take precautions. Bring an ice chisel or auger to check thickness as you go. Wear a life jacket under your winter gear. Carry ice picks or screwdrivers on a cord around your neck to help pull yourself out if you break through. Never go alone and let someone know your plans. Watch for warning signs like cracks, pressure ridges, or water on the surface.

Roll the window down on your vehicle so that if you break through and the vehicle sinks far enough that the door won’t open, you can still get out quickly.

If you break through, act quickly. Kick your legs to get horizontal, then use your ice picks to pull yourself onto solid ice. Roll away from the hole rather than standing up immediately. Once safe, get to warmth as quickly as possible because hypothermia sets in rapidly.

For current information about maintained ice roads, contact the trails group maintaining them. Local outdoor shops often share ice condition reports from customers, but remember these are unofficial observations and conditions change.

Ice safety requires constant attention and good judgment. When in doubt, stay off. No fish, shortcut, or thrill is worth risking your life or the lives of the people that have to come to your rescue.

Christian M. Hartley is a 40-year Alaskan resident with over 25 years of public safety experience and public service. He runs a freelance business, Big Lake Writer, from home in Big Lake that he shares with his wife of 19 years and their three teenage sons.