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The amount of water you require can vary a lot depending on the conditions and your level of exertion and conditioning. Dehydration can affect your physical and mental performance quite quickly so it should be a high priority. Similarly, if you are hiking between water sources you need to make a careful judgement on how reliable those sources are. Can you ...


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Ground temperature up to 30 feet deep varies as a function of depth and the seasonal temperature. The further down you go, the more it "averages" the location's seasonal variations and the more it lags the seasonal changes. Hole in the ground In southwest canada (vancouver, for instance) you can expect that four feet down the ground will be around 50F ...



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