The Los Angeles County Storm Drain System shows drains, channels, catch basins, and debris basins
in the County of Los Angeles using a web-based map viewer. It currently includes
facilities owned and maintained by the Los Angeles County Flood Control District (District), the
City of Los Angeles, and United States Army Corps of Engineers (Corps). Information on the
facilities, such as date built, size, and material can be obtained by selecting them. The plans are
also available for the Corps and District facilities.