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WHY IS SNOW IMPORTANT? Although snowfall depth is reported on newscasts and is important to skiers, the snowfall measurement by weather bureaus has more meaning when the water content of the snow is determined and reported. To measure the water content of snow, remove the top and bottom from a straight-sided can, and push the can straight down into the snow until its rim is even with the earth's surface. Reach under the can and, using a piece of cardboard or plastic, cut the snow even with the bottom edge of the can. Remove the cylinder of snow, and empty the snow into a second can of the same size which has only one end removed. Allow the snow to melt slowly. (If you heat it to melt it, there will be too much loss of water by evaporation.) Measure the depth of the water that remains. The snow will eventually melt and become the water that we need for our crops. Sometimes run-off (melted snow) is so copious that it causes flooding. Mother Nature can please the farmers sometimes, and sometimes please those who repair structures damaged by flooding! Not at the same time. Compare the depth of the water to the depth of the snow that produced it. Since snows are different, try this activity with dry, light, fluffy snow, and then with packed snow. You will find that some snows are drier than others (the ratio of water to snow depth is smaller). Seriate or rank the snows by the amount of water each produces. If temperature measurements are taken during snowfalls, a relationship between temperature, type of snow formed, and water content will be discovered. What kind of snow would be best for building an igloo? Wet or dry? When do we get to discuss avalanche?  Any problems with this page? Send URL to
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