HEC-1

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HEC-1 is software that was developed by the US Army Corps of Engineers^[1] to estimate river flows as a result of rainfall. It was written in the FORTRAN language and until 1984 could only be run on a mainframe computer.

When desktop computers became popular the program was ported to the PC.^[2] Engineers and scientists still use it today because of its ability to model a wide range of natural hydrologic systems.^{[citation needed]}

• HEC-1 website
• A Study of Hydrologic Simulation Models
• Army Hydrologic Engineering Center Archived 2010-02-04 at the Wayback Machine

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