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Line 31:
{|class="wikitable"+
−|+ Slope variations+
−|- +
−|< 2 %||Use underdrain to distribute water for infiltration+|-+|2 - 5 %||Design swale for surface flow, consider check dams+
−|-+
−||5 %||Check dams required to reduce effective slope to 2 – 3 % +
−|}
*Minimum length 30 m
*Minimum length 30 m
−===Adding check dams===
−To calculate the spaing and sizing of check dams, see [[Check dams: Sizing]]
−Maximum depth of flow
Maximum depth of flow