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Line 61:
Line 61: − "n" = Porosity of reservoir aggregate material+
Infiltration: Sizing and modeling (view source)
Revision as of 16:59, 10 December 2021
, 2 years ago→To calculate the required storage reservoir footprint area where the depth is fixed or constrained (1D drainage)
''f''' = [[design infiltration rate]] of the native soil (m/h) <br>
''f''' = [[design infiltration rate]] of the native soil (m/h) <br>
''t'' = [[drainage time]], based on local criteria or long-term average inter-event period for the location.<br>
''t'' = [[drainage time]], based on local criteria or long-term average inter-event period for the location.<br>
''n'' = Porosity of the stone bed aggregate material (typically 0.4 for 50 mm dia. [[reservoir aggregate|clear stone]])
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In many locations there may be a limited depth of soil available above the seasonally high water table or top of bedrock elevation into which stormwater may be infiltrated. In such cases the required storage needs to be distributed more widely across the landscape. <br>
In many locations there may be a limited depth of soil available above the seasonally high water table or top of bedrock elevation into which stormwater may be infiltrated. In such cases the required storage needs to be distributed more widely across the landscape. <br>