Snowdrift on and around a structure or a micro-topography brings about various snow damage. A snow wind tunnel test using model snow is a useful method for investigating snowdrift problems. However, the similarity law for this wind tunnel test has not yet been established. And the test operation is very difficult. In the meantime, snowdrift is closely related to the wind flow. The authors have been investigating the characteristics of both airflow and snowdrift around a two-dimensional collector snow fence1-3). The characteristics of airflow were measured by means of boundary layer wind tunnel test. And the characteristics of snowdrift were observed in a field measurement. This paper describes the relationship between the flow near the snow surface and the snowdrift patterns. Consequently, between the snowdrift and acceleration of the wind velocity in close vicinity of the snow surface, any correlation was confirmed.