| Critical
Slope Length |
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| Ø | If slope length
longer than critical slope |
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| length,
contouring fails allowing excessive rill |
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| erosion |
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| Ø | Function of: |
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| - | Storm severity,
slope steepness, cover- |
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| management, EI
distribution |
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| Ø | Critical slope
length extensions below strips |
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| depend on degree
that strip spreads runoff |
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| Ø | Terraces are
used if changing cover- |
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| management or
strips are not sufficient |
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| Ø | Soil disturbance
required to restore failed |
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| contouring |
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