iRIC Software
Changing River Science

International River Interface Cooperative

iRIC: Free Software for Flow and Bed Morphodynamics
iRIC software can simulate rivers from Colorado River to the Nile.
A revolution in river flow calculations, riverbed morphology, and flood analyses.
Know! Solve! See!

Toyohira River (Sapporo, Hokkaido, Japan)

New features◼ Included in iRIC software: runoff solver, floodingsolver, tsunami solver, one, two, and threedimensional models for flow and bed morphology
calculations. You can freely use any solver afterregistration.
◼ Create impressive images and animations.

Calculation of driftwoodby NaysCUBE (3-D Flow Model)

iRICVersion
2.3beta◼ Download
backgroundimages fromgoogle map,
Bing Maps automatically◼ import altitude data from web services such as USGS
and import geographic information◼ Analyze the differences in river cross-section survey
data collected at different times◼ Four new solvers (for more information, please referto the reverse side) iRIC can be downloaded freely. You can find the latest
information about iRIC software (after userregistration) http://i-ric.org.
 iRIC is a river flow and riverbed deformation analysis
software package which combines the functionality of
MD_SWMS, developed by the USGS (U.S. GeologicalSurvey)and RIC-Nays, developed by the Foundation of
Hokkaido River Disaster Prevention Research Center,Japan.

International River Interface CooperativeExamples of calculation results using iRIC solvers
Flood (Nays2D Flood)

Tsunami (ELIMO)

Riverbed deformation (Nays2DH)

Debris
Debris flow
flow (Morpho2DH)(Morpho2DH)

River flow (FaSTMECH)

Habitat potential (EvaTRiP)(EvaTRiP)GUI Functions< Grid generation >➢ River survey and DEM
data can be edited
within the GUI➢ Grids and meshes canbe generated from riversurvey data and/or DEM
data➢ Aerial photo and map
images can be set as
backgrounds➢ Grid attributes can beillustrated with contours
and bird’s-eye view

<Analysis/Visualization>➢ Visualize the calculation
results using contours,
vectors, streamlines
and particle tracks➢ Save visualized image
as jpg, pdf, etc.
➢ Export data in csv andvtk format➢ Create kml files for
Google Earth<Other>- XML Scheme:
XML scheme is used for constructing menus and specifying
model parameters. This makes it simple to add new models orchange existing models in the iRIC system.
- CGNS file format
The CGNS data file format is used in the iRIC system. Users
can directly analyze results using software that can importCGNS files, including MATLAB, TECPLOT etc.

Solver Lineup■ SRM: SRM is a runoff calculation solver using storage routing models.
■ CERI1D : CERI1D is a solver for one-dimensional (1D) unsteady flow
calculations. CERI1D is capable of calculating river flow, river ice
fluctuations and tsunami propagation into rivers.
■ Nays2DH: Nays2DH (combined Nays2D and Morpho2D) is a twodimensional solver for flow and bed deformation. Nays2DH can simulate
complex unsteady flows and bed variation including bank erosion, riverconfluences, mixture of sediment, suspended load transport, rigid-bed, etc.
■ FaSTMECH: FaSTMECH is flow and riverbed variation solver underquasi-steady flow. It also includes Quasi 3D.
■ SToRM: SToRM is unstructured grid model. It can handle regular flow,
jet flow, and waterfront boundaries.
■ NaysCUBE: NaysCUBE simulates the fully three-dimensional flow,such as the horseshoe vortices around river structures, etc., and theassociated bed morphodynamics. NaysCUBE ver.3 also equips the module
for simulating driftwood.
■ Nays2DFlood : Nays2DFlood is for flood calculation and wasdeveloped from Nays2D solver. It allows setting the overflow point of rivers,
flooding discharges, and land elevations. Simulates the running or diffusing
flow over land.
■ Morpho2DH: Morpho2DH is the horizontal two dimensional bed
deformation analysis solver which can reproduce the transport anddeposition process of debris/mud flow with structures (ex. sabo dam andso on). Additionally, the unsteady horizontal two dimensional bed
deformation analysis can be performed.
■ ELIMO : ELIMO is a solver for tsunami calculation. It is capable ofreliable estimations of Tsunami generation, propagation and evolution oncoasts.
■ EvaTRiP: EvaTRiP is aimed at utilizing the stability of river channels inriver channel planning and design, the study of the river environment andmaintenance management, evaluating the necessity of revetment,
evaluating migration critical particle size, evaluating the availability ofterrestrial plant growth, Evaluate fish habitat (HSI)■ DHABSIM: DHABSIM aims to evaluate comprehensive habitability ofgeneral fish species as easily as possible. It gives the flow velocity, depth,bottom sediment and vegetation distribution of river way as geographicalinformation of iRIC. Just output the evaluation value and its distribution asa fish habitat.

You can download iRIC Software version 3
from http://i-ric.org/
International River Interface Cooperative