THROUGHFALL IN A FOREST

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Abstract
For a period, 1958–60, a record was kept of 24 wedge-shaped gages randomly placed under a secondary hardwood forest canopy to determine the amount and variation in throughfall and drip from the rain. An average of the 24 gages under the canopy for each rain was then compared with the catch in a standard 8-inch rain gage maintained in the open. The comparisons were made by linear and curvilinear regression equations for summer and winter rains, over one inch and under one inch. The size of storm had the most pronounced effect on the throughfall regardless of the seasons. The data showed that the throughfall as a percent of total rainfall varied as the size of the storm. This was represented best by the equations y = 0.834 x 1.045.

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