Urban highway storm drainage model, vol 4: surface runoff program, user's manual and documentation

A package of six user-oriented computer programs has been developed and tested for the analysis and design of urban highway drainage systems and related nonpoint source pollution problems. These programs are organized into four related but independent Modules. This report consists of the documentation and user's manual for the Surface Runoff Program of the Hydraulics/Quality Module. This program simulates the runoff quantity and quality from the highway and its surroundings and routes the flow through the surface conveyance system to detention basins and inlets to the underground conduit system. This report is the fourth in a series. The others in the series are: FHWA No. 83/040--Executive Summary; Vol. 1, FHWA No. 83/041--Model Development and Test Applications; Vol. 2, FHWA No. 083/042--Precipitation Module; Vol. 3, FHWA No. 83/043--Inlet Design Program; Vol. 5, FHWA No. 83/045--Drainage Design Program; Vol. 6, FHWA No. 83/046--Analysis Module; Vol. 7, FHWA No. 83/047--Cost Estimation Module. (FHWA)