Hollyhills Drain Relief for 1920s Drainage System

by T. Scott Schales,
Glen Drogin, (M.ASCE),

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


The paper will discuss design and construction problems encountered for a $50,000,000 Urban Storm Drain System in the Metropolitan Los Angeles Area. The Drainage System relieves a system constructed in the 1920s. The following issues will be discussed in the paper: Flooding history and elimination of Federal Flood Insurances Zones-Modification to the outlet channel; Utilization of an abandon storm drain as a detention basin to reduce peak flow rate; NPDES Permit, contaminated groundwater disposal and groundwater construction problems; Environmental impacts; Traffic mitigation measures; Public meetings and mitigation measures to public inconvenience

Subject Headings: Drainage systems | Urban areas | Storms | Drainage basins | Groundwater pollution | Construction management | Hydraulic structures | Floods | Los Angeles | California | United States

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