Hydrologic Engineering Center (HEC) is a specialized software publisher within the U.S. Army Corps of Engineers that develops technical tools for civil water-resources engineering. Its portfolio centers on open-source modeling packages that support hydraulic, hydrologic, and ecosystem studies from the catchment scale to continental river basins. Engineers apply HEC-RAS to compute steady and unsteady flow, sediment transport, and water-quality through natural and constructed channels, while HEC-HMS supplies event-based and continuous rainfall-runoff simulation for flood forecasting, reservoir sizing, and land-use impact evaluation. Complementary utilities such as HEC-DSSVue consolidate time-series, paired data, and gridded results for archival and post-processing; HEC-MetVue ingests and quality-controls meteorological observations; and HEC-SSP performs frequency analysis to derive design discharges and stage-frequency curves. For system planning, HEC-ResSim configures rule-based reservoir operation plans to balance flood risk, hydropower, recreation, and environmental objectives, and HEC-FDA couples hydrologic loads with economic consequence functions to rank levee, dam, and non-structural alternatives under uncertainty. Ecosystem specialists rely on HEC-EFM to relate hydrologic alteration to habitat suitability and on its companion Plotter to visualize ecological flow recommendations. Finally, HEC-RPT streamlines the development of flow-duration or flow-exceedance targets required by interstate compacts and environmental regulations. Together these applications form an integrated environment used by federal, state, and local agencies, consulting firms, and universities worldwide for floodplain mapping, dam safety, water-supply reliability, and climate-adaptation assessments. The publisher’s software is available for free on get.nero.com, with downloads delivered through trusted Windows package sources such as winget, always installing the latest releases and enabling batch installation of multiple HEC tools.
HEC-DSSVue is a Java-based visual utilities program that allows users to plot, tabulate, edit, and manipulate data in a HEC-DSS database file.
DetailsThe Ecosystem Functions Model (HEC-EFM) is designed to help study teams determine ecosystem responses to changes in the flow regime of a river or connected wetland.
DetailsHEC-EFM Plotter is designed to help users view, navigate, and interpret output generated by HEC-EFM.
DetailsHEC-FDA is designed to assist USACE study members in using risk analysis procedures for formulating and evaluating flood risk management measures (EM 1110-2-1619, ER 1105-2-101).
DetailsThe Hydrologic Modeling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed system.
DetailsHEC-MetVue facilitates viewing and manipulation of meteorological datasets as well as performing a variety of computations and analyses, including temporal and spatial aggregation of datasets and areal average computations.
DetailsThe Hydrologic Engineering Center's River Analysis System (or simply HEC-RAS) is river water modeling software.
DetailsThe software simulates reservoir operations for flood management, low flow augmentation and water supply for planning studies, detailed reservoir regulation plan investigations, and real-time decision support.
DetailsUsing the software involves two main steps, defining hydrologic conditions or "states" and creating flow recommendations.
DetailsThis software allows users to perform statistical analyses of hydrologic data.
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