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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