Spring Ice II

Ice safety tips (from Canadian Red Cross):

 

Ice Factors

 

Many factors affect ice thickness including: type of water, location, the time of year and other environmental factors such as:

 

* Water depth and size of body of water.

* Currents, tides and other moving water.

* Chemicals including salt.

* Fluctuations in water levels.

* Logs, rocks and docks absorbing heat from the sun.

* Changing air temperature.

* Shock waves from vehicles traveling on the ice.

 

Ice Colour

 

The colour of ice may be an indication of its strength.

 

* Clear blue ice is strongest.

* White opaque or snow ice is half as strong as blue ice. Opaque ice is formed by wet snow freezing on the ice.

* Grey ice is unsafe. The grayness indicates the presence of water.

 

Ice thickness should be:

 

* 15 cm for walking or skating alone

* 20 cm for skating parties or games

* 25 cm for snowmobiles.

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Taken on March 16, 2009