Since our founding in 2014, we have delivered more than 260 projects for national research institutes, universities, foundations and engineering consultants. Here is our work by service category.
01AI & COACHING
54 projects in this field (2014–2026). The count covers training and technical-support projects.
2014– / Government, municipalities & engineering consultants
We plan and run iRIC and numerical-analysis workshops for engineers in government and consulting, from beginner to developer level, with hands-on exercises using real project data.
iRICHands-onTeaching materials
iRIC workshop for the Hokkaido Regional Development Bureau (Sapporo, 2025)
2015– / International cooperation & overseas institutes
iRIC courses and seminars have been held in more than 20 countries, including Peru, Indonesia, Colombia, Vietnam, Nepal and Thailand. In 2023 we taught at the international iRIC course in Lyon, France, and at an English-language course at PWRI ICHARM.
English coursesInternational cooperationiRIC
2023– / University & in-house
We created river-simulation materials for university courses, and publish learning materials and mini-tests on hydraulics and numerical analysis as an open online learning space, iRIC Academy.
Course materialsE-learningMini-tests
02NUMERICAL & GEOSPATIAL ANALYSIS
74 projects in this field (2014–2026)
2014– / National research institutes & engineering consultants
Analyses of flood flows in large rivers, pluvial flooding, sediment runoff, reservoir sedimentation and driftwood. For the 2015 Kinu River flood, we reproduced the event and compared the results with the observed inundation area.
Nays2DFloodNays2DHInundation analysis
Base map: Geospatial Information Authority of Japan
2019 / National research institute
We reproduced the pluvial flooding of the August 2019 heavy rain in northern Kyushu using satellite imagery and terrain data, showing overflow paths and flow speeds under different channel and sluice conditions.
Pluvial floodingNays2DFloodSatellite imagery
Base map: © Mapbox © OpenStreetMap
2021 / Private company
An interactive exhibit that projects water flow and flooding onto a sand terrain model. Moving the sand changes how the water flows, letting visitors feel the relationship between landform and water.
Nays2DFloodProjection
03PROGRAMMING
130 projects in this field (2014–2026)
2018– / National research institute & university
We implemented the RRI model, which simulates a whole basin from rainfall to flooding, as an iRIC solver and tested it on the July 2020 Kuma River flood. We also built a system that runs nationwide flood forecasts automatically.
RRIiRICReal-time forecasting
Base map: Google Maps
2015– / Engineering consultants
We made 2D and quasi-3D models developed in-house by consulting firms usable on iRIC while keeping them private, from unstructured-grid generation and vegetation or bed-material settings to visualization, all in one interface.
iRICSolver integrationUnstructured grid
2018– / Engineering consultants
We added soft-rock erosion, vegetation dynamics and bridge-pier effects to Nays2DH, and used drone-surveyed terrain to compute where the rock is eroded.
Nays2DHFortranBed evolution
04SYSTEM DEVELOPMENT
55 projects in this field (2014–2026)
FY2017– (10 consecutive years) / Foundation
We built and operate on the cloud a web system for searching and sharing river survey data, observations and photos on a map. After the 2018 Hokkaido Eastern Iburi Earthquake it was used by the survey team to share data. Today it continues as a management system for comparing river cross-sections across survey years.
AWSWeb GISDatabase
Screen design (specification stage). Base map: GSI tiles
2022 / Foundation
A browser-based simulator that displays river flow and depth inside a 3D city model, together with hazard spots and bridge locations.
3D city modelWebFlow visualization
2018–2019 / National research institute & engineering consultant
A hazard map that overlays inundation simulation results on a 3D map with evacuation shelters, designed to help explain flood risk to residents.
3D visualizationInundation analysisGoogle Earth
Base map: Google Earth
Counted by the year in our project numbers (our numbering changed partway, so it may differ from the fiscal year by up to one year). Only projects confirmed in both our ledger and project folders are counted. Projects spanning several categories are counted in each.
Computations or features beyond the public version of iRIC, integrating your own model, planning a workshop: tell us what you have in mind.
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