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Living Snow Fence Case Study: Lamberton, MN
	Introduction   Snowfall   Wind Direction   Fetch Distance   Snow Water Equiv.   Snow Transport Porosity   Attack Angle   Setback   Conclusions   References The porosity of the snow fence determines fence's snow storage capacity. The table to the right gives the porosity fraction for various snow fences and the resulting snow storage capacity (Qc). Qc is calculated using the formula on the right. For the case study at Lamberton, the porosity for the twin-row planting of honeysuckle was 0.70. Assuming the honeysuckle height to be 6.5 ft (1.98 m), the snow storage capacity was 30.5 t/m.   Porosity & Qc Type of Fence Porosity Solid Fence 0.0 Double Shrub Row 0.275 Structural Snow Fence 0.50 Single Deciduous Tree Row 0.70 6-8 Rows Standing Strips of Corn 0.50 Snow Storage Capacity Formula Qc/H2.2 = (3 + 4P + 44P2 - 60P3) Qc is snow storage capacity in t/m. H is the fence height in meters. P is the porosity percentage of the fence.     close this window