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Aeration Projects Can Result in Thin Ice

December 2, 2014 by Chelsea Walters

The Saskatchewan Wildlife Federation advises people to be cautious on all frozen water bodies, especially those that have aeration systems.

Aerating a water body helps prevent winterkill, which occurs when aquatic plants either die or reduce their oxygen production, leading to fish kill. Aeration systems circulate fresh air into small, shallow fish bearing water bodies that are vulnerable to winterkill. As a result of the air bubbling up to the surface, there is often thin ice and open water near an aeration system. Water bodies with aeration systems are posted with warning signs and people are advised to stay clear of these posted areas.

Aeration systems usually operate between December and March. A list of water bodies with aeration systems is attached.   Changing temperatures, combined with the amount of snowfall and slush in some areas, can also contribute to unsafe ice conditions. Extreme caution should be taken while traveling on the ice this winter.

Here are some ice facts that people should be aware of:

  • ice strength should never be judged by appearance alone;
  • ice thickness is seldom uniform throughout a water body and can sometimes vary from safe to unsafe within a metre;
  • changing temperatures can cause thermal cracks and pressure ridges, which are indicators of unsafe ice;
  • slush indicates that ice is eroding from above and below;
  • large, deep lakes take longer to freeze and are slower to melt than smaller lakes;
  • currents in a river or creek make ice approximately 15 per cent weaker than lake ice; and
  • heavy snowfall in some areas of the province can reduce the bearing capacity of the ice. The weight of the snow often causes slush and/or flooding. Snow also acts as an insulator, which slows the freezing process.

The SWF hopes you safely enjoy your outdoor activities this winter.  For more information on ice safety check out the Ice Safety Tips and Ice Thickness card available on the Lifesaving Society website at http://www.lifesaving.org/public_education.php?page=181

The Saskatchewan Wildlife Federation (SWF) proudly represents over 33,000 members from 122 branches across Saskatchewan and is considered to be, per capita, the largest wildlife conservation organization of its kind in the world.  For more info about the SWF go to www.swf.sk.ca.

-30-

 

For more information, contact:

James Villeneuve, Director of Fisheries
fisheries@swf.sk.ca

 

SWF Aeration Projects – 2014

 Lake/Reservoir                Location                          

 Bell Pond                          1 km S. of Luseland

 Buffalo Pound Pond        Buffalo Pound Prov. Park

 Ceylon Reservoir              3 km E of Ceylon

 Clearwater Lake               8 km NE of Kyle

 Condie Reservoir             11 km NW of Regina

 Eagle Creek Pond             25 km NW of Asquith

 From Lake                         7 km N of Spy Hill

 Lady Lake                          8 km NW of Preeceville

 Melville Reservoir            3 km NW of Melville

 Picnic Lake                        6 km E of Edam

 Oyama Reservoir             5 km E of Kronau

 Redberry Pond                 Redberry Lake Regional Park

 Scott Reservoir                8 km SW of Wilkie

 Steistol Lake                     Greenwater Lake Prov. Park

 Struthers Lake                  11 km NE of Crystal Springs

 Waldheim Pond               Town of Waldheim

 Wilson Lake                      12 km SW of Springside

 Wynyard Reservoir          2 km S of Wynyard

Filed Under: Angling Tagged With: Aeration, Fishing, Thin Ice, Winterkill

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