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Posts: 2515
Location: Waukesha & Land O Lakes, WI | I understand that alot of the guys here on M1st are ice anglers. I want to ask that everybody who icefishes, and even those who don't, visit Icefishing First when they get a chance to look at pictures I posted of truck that went through Pewaukee Lake this past weekend.
Please use caution when going out, it's still early and there's some very dangerous conditions yet.
No fish is worth losing personal property or your life. | |
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Posts: 382
| Dudes are driving trucks out in S. wisconsin-sweet, we JUST started driving trucks out in N. MN. Just use your heads people its not that complicated | |
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Posts: 1207
Location: Pigeon Forge TN. | Very Good Advice, and I would like to second that.
As all the Firefighters on this board do not really want to have pull anyone out.
Be Safe for the Holidays and through the ice fishing Season.
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Posts: 2037
Location: lansing, il | i copied this from icefirst, it is by no means the "law of ice" but it is a good place to start . i dont believe any ice is safe ice!
The general formula is 50 x (Thickness squared) = lbs of strength. So 2" hold approx. 200 pounds.
To hold a ford ranger (~3200 lbs curb weight) one would need about 8" of ice.
As the info below points out, there are a bunch of other factors that come into play.
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Ice Formation: Cold air cools surface of the water. As the surface water cools it becomes more dense and sinks—being replaced by the less dense and warmer water. This thermal inversion continues until the water is a consistent 39 degrees. At this point the water no longer becomes dense as it gets colder. The cold air continues to cool the water surface until the temperature is sufficient to create ice. Ice expands 9% as it is converted from water. It is therefore less dense and floats.
Types of Ice:
Frazil - thin layers of new ice in disc shapes—very weak.
Clear Ice - New, Strong Ice
Snow Ice - Formed from refrozen snow, murky, porous--weak
Layer Ice - Layers of snow and other forms of ice, refrozen—weak
Anchor Ice - Form on very cold river bottoms and then releases with the warmth of the sun.
Pack Ice - Broken pieces of Ice, blown together and frozen in place. Will have holes and weak spots.
Ice Strength: Thickness is only one factor in judging the strength of Ice. The formula for calculating the strength of Clear Ice is: Strength = 50 x thickness squared. (S = 50Tsq.) or 2" will support 200 lbs, 4" will support 800 lbs. Remember that Ice will be thickest near to shore. If you measure 3" at shore, count on losing at least an inch of ice as you move to deeper water. Other factors affecting ice:
Snow on Ice - can insulate Ice from the cold air. Warmer water below the ice may help it deteriorate.
Water fowl - will stir the water and prevent it from freezing. A section kept open by birds may be much thinner even when frozen.
Stumps or wood protruding through the water. The process of decay can produce heat and lessen the strength of Ice.
Streams entering still water or underwater springs producing upwellings can produce weak spots.
Slush or water on Ice can cause Ice to weaken.
Depth will result in ice formation taking longer.
Water Chemistry - Golf ponds with chemicals may freeze at different temperatures.
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Ice Safety, Be Careful Please