Frequently Asked Questions (FAQ)

What criteria exist in Los Angeles County to prevent hydromodification?

Standards to offset possible impacts on natural channels due to new and re-development have been established for specific areas of Los Angeles County, for specific types of development, and for a range of storm events. The criteria can be found in the County's Low Impact Development Manual by clicking on the link below.

  L.A. County LID Manual
BMP WMD SWP Watershed groundwater stormwater conservation runoff quality FEMA NPDES TMDL BMP Levees Levee certification Flood insurance NFIP Flood zone determination IRWMP Planning