Talk:Infiltration

The material pasted here has been retained for archival purposes only.

Infiltration tests must be undertaken at the location, depth and with a head of water that replicates the proposed design.

Suggested safety factors to be applied to measured percolation rate when designing infiltration facilities

Catchment area	Consequence of failure
	No damage or inconvenience	Minor damage or inconvenience to external structures (e.g. ponding in parking lot)	Significant damage to buildings or infrastructure (e.g. flooding damage)
<100 m2	1.5	2	10
100 - 1000 m2	1.5	3	10

The land draining to a single reference point (usually a structural BMP); similar to a subwatershed, but on a smaller scale.