HEC-HMS

Hydrologic Engineering Center - Hydrologic Modeling System

The Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS) is a watershed model designed to simulate rainfall-runoff processes, including event infiltration, unit hydrographs, and hydrologic routing. HEC-HMS also includes modules or supplements for evapotranspiration, snowmelt, and soil moisture accounting, gridded runoff simulation, model optimization, forecasting streamflow, depth-area reduction, assessing model uncertainty, erosion and sediment transport, and water quality.

Developer
USACE
Model Information
For more information about this model, go to www.hec.usace.army.mil
Spatial Resolution
The spatial resolution is user defined. The model can use sub-basin averaging or subdivide a sub-basin into grid cells depending on the overall resolution required.
Temporal Resolution
The temporal resolution is user specified and time steps are typically on the order of minutes. Simulation periods can be any length (often several years).
Outputs
Outputs specifics include flow characteristics.
Intended User
practitioner
Model Type
watershed
Inclusion of Climate Change
Climate change is explicitly accounted for through estimated future flow patterns simulated in the model.
Geographic Region
generalized
Data Requirements
some data sets built in
Source Code Availability
open source
Dimensions
2d
Computational Burden
medium
Scenario Modeling
scenarios by hand only
Coding Language
FORTRAN, java
Operating System
not applicable
Mathematical Approach
deterministic
Maintenance Plan
maintained
Date of Last Known Update
1-Sep-18
User Manual
go to documentation at www.hec.usace.army.mil