Present paper aims to forecast the maximum snowcover depth H in every winter in Fukui city, in which H varies remarkablly 23-213cm during the period of 1898-1989. The writer reported previously some methods based upon (1) the daily variation of snowcover depth in early winter and (2) the daily variation of air temperature in Nov. and Dec., and (3) periodic behaviors of H. These methods have respectively characteristics but also faults.
In the present paper the writer discusses a forecast successively in three stages by combining of these three methods, and some technique in the calculation are described. The forecast of H is obtained with the fitness probability P=98% within the error +25--50cm.

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Horizontal snow blower fences now widely applied have such a problem that they will turn into drift fences when the wind direction is reversed, loosing the blowing effect of the fences thereafter. It is noted that even in the same locality, the wind direction is not constant, but is reversed with a high frequency.
We succeeded in developing a novel type of effective snow blower fences, i. e. vertical-type, snow blower fences on the basis of a new concept resulting from our fluid dynamic studies of the problem and our extensive tests for more than 10 years including laboratory-scale water tank tests and full-scale outdoor tests in the I shikari district in Hokkaido. We have found that the vertical type, snow blower fences have a high snow blowing capacity without causing any drifting phenomena, even when the wind direction is reversed.

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