Estimating Runoff Losses Due to Infiltration in Treatment Facilities and Trenches

Washington State DOT Design Office Hydraulics Branch
http://www.wsdot.wa.gov/eesc/design/hydraulics/

Low Impact Developing Modeling Guidance

Spreadsheet analysis of BMP infiltration
http://www.wsdot.wa.gov/eesc/design/hydraulics/MGSFloodTraining/wwinfilpondex.xls
http://www.wsdot.wa.gov/eesc/design/hydraulics/Manual/InfiltrationLossEst.pdf

WSDOE Low Impact Development Design and Flow Modeling Guidance
http://www.wsdot.wa.gov/eesc/design/hydraulics/Manual/LIDDesign&FlowModeling.pdf