You must find a consumable and safe fluid. You have a knife and the clothes on your back. You have attempted to melt snow in a make shift solar still with negative results. What now?
Lucky for you, you've become lost during a hike on the March break in the Canadian Wilderness. Surrounding you is none other than the mighty Maple. When you look at it you instantly think of Maple Syrup.
As nice as that thought is, that tree produces sap and not Maple Syrup. The syrup is a product of many hours of boiling and temperature sensitive preparation. If you've ever sat inside a sugar shack you will have undoubtedly experienced the steam of the evaporators. That process of evaporation is the way the sap syrup is separated from the water. The water is boiled off leaving just the syrup.
If you allow yourself to become dehydrated your body will shut down. That is an emergency whether you're on a canoe trip in August or lost in the bush in December.
Don't rely on the rivers and lakes for water. You may never find them in the bush.
Hydrate or Die !