Best Management Practices Applicability

Applicability by Runoff Surface Type

The following table illustrates which sources of stormwater runoff a handful of Low Impact Development (LID) practices can manage:

Applicability for Challenging Sites

Sites with steep slopes, seasonal high groundwater tables, shallow bedrock, or inadequate setbacks are considered unsuitable for infiltration of runoff; however, infiltration and evaporation of rainfall and evaporation of runoff are still viable on these sites.

Slow draining soils are not automatically a barrier to infiltration, but will make runoff management facilities, like rain gardens, larger, which could lead to inadequate setbacks. Expansive clays soils are unsuitable for porous pavements.

1Includes sites with steep slopes, seasonal high groundwater tables, shallow bedrock, & inadequate setbacks.

2Defined as soils draining at least 0.5 inches/hour, except as noted for porous pavements.

3Soils draining as slow as 0.1 inches/hour are suitable for porous pavements.

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