United States Department of Transportation
i
HYDRAIN - Integrated Drainage Design Computer System, Volume II: Hydro - Hydrology
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1988-11-01
[PDF-875.43 KB]
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Abstract:This project report, in six volumes, documents a system of computer programs oriented to the design of drainage components: culverts, storm drains, and open channels. The system includes an input generator to estimate design rain, hyetographs, design flow and hydrographs at user selected return periods. Programs are facilitated with semi-expert system shells that generate input data for engineering programs. All system elements fit into an open architecture that utilizes personal computers having hard disks, math coprocessors and operate within an MS-DOS environment. This volume, Volume II, documents the computer program HYDRO. HYDRO is a hydrology analysis program developed for the Pooled Fund Project (PFP) and was written in FORTRAN. It is based on the Federal Highway Administration (FHWA) Highway Engineering Circular (HEC) 19, HYDROLOGY, and as such, is an effort to combine existing approaches for rainfall and runoff analyses into one system. HYDRO generates point estimates or a single design event. It is not a continuous simulation model. HYDRO uses the probabilistic distribution of natural events such as rainfall or stream flow, as a controlling variable. HYDRO should be considered as a computer based subset of HEC-19, with some areas of HEC-12 also included.
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