Snow Survey Sampling Guide
For Special Conditions - Sampling Very Shallow Snow
If water content of the snow is less than 2 inches, it is difficult to
read the weighing scale accurately for single sample points. Do as
follows:
- Take a sample at the sampling point.
- Empty the core into a bucket or any container that can be tied to
the weight scale. (if the empty container is not heavy enough to
record an empty weight on the scale, add more weight. Use sections of
sampling tubes, driving wrenches, or anything handy.)
- Record the depth of snow and length of core as shown on sample note
below.
- Weigh container and any added weights when all the sample cores have
been accumulated.
- Record this weight in the bottom of the column "Weight of Tube
and Core."
Empty snow from container. Weigh container and weights and record this
figure at the bottom of the column "Weight of Empty Tube."
- Subtract weight of empty container from weight of container and
core. Record the difference at the bottom of the column "Water
Content Inches." To obtain average water content on the snow
course, divide total water content by total number of sampling points.
- Total the snow depth and divide by number of sampling points to get
average snow depth.
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Snow Survey Sampling Guide
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