Learn InfoWorks ICM: Build Accurate 1D/2D Hydraulic Models

Upload and import the ground model in Infraworks by selecting a ground model grid or tiff file, set cell size in meters or feet, and wait as import time varies.

Set flag and geocoordinate in InfoWorks ICM to build accurate 1D/2D hydraulic models for drainage and flood analysis, aligning project coordinates with the UTM zone.

Define a 1D river model in InfraWorks ICM, set UTM WGS84 zone 43 north, create break and outflow nodes, build cross sections, and update from the ground model.

Create the inflow in your one day river model group, open its properties, set the time interval, assign the inflow hydrograph to node n1, and save the model.

Identify and fix network issues by building boundaries from banks and sections, validate and run the model, then view flood depth and cross-section graphs of flow and depth.

review the results of a 1d river model, adjust cross-section graphs, hydrographs, and flood-depth visuals, and save layouts for reporting. the next video introduces hydraulic structures like bridges and culverts.

Design the 1D bridge by creating upstream and downstream cross sections, deck, nodes and links; import the center line and build 50-meter cross sections with discharge coefficient and modular limit.

Create and configure the bridge within the 1D/2D hydraulic model by updating the ground model, building cross sections, resolving bank connections, defining openings and piers, and validating the network.

Open the 3d river network to view the bridge opening, then set up a new run by inserting the network and selecting M9 flow for Yamuna inflow for 24 hours.

Run the model and review results, addressing warnings that cross-section capacity is insufficient for a near 1000 m3/s peak discharge, and inspect flood depth and cross sections.

Create a 2D culvert within a ground model by building a 2D catchment, defining upstream and downstream nodes, linking with 2D lines, meshing, applying SCS NRC rainfall, and validating.

Interpolate the 24-hour inflow data, input or import the hydrograph, define the inflow boundary, build the network and rainfall events, then create and run the hydraulic model simulation.

Review hydraulic model results, viewing maximum flow of 228.82 m³/s and upstream depth of 2.754, through a culvert with height 3, with graphs and hydrographs.

Create a transportable database for exchange by copying the network, ground model, and simulation results, then save as a transportable IMT file suitable for client review.

export simulation results to shp format, choose maximum single 2d results, then visualize in gis and set coordinates to align the map with graduated depth classification.

Create a 2D river model with a bridge and culvert by building a new network, defining terrain, inflow boundaries, and 2D base linear structures, then run a six-hour simulation.

Review simulation results by inspecting max flows, overflow points, flow directions, and cross sections to verify dynamic flow behavior and culvert effects in hydraulic models.

Integrate a 1D river model with a 2D catchment by delineating catchments, creating the mesh, and applying rainfall and inflow boundaries, then validate and review results.

Build an accurate 1D/2D hydraulic model by creating a 2D surface drainage network in InfraWorks ICM, linking subcatchments, manholes, and outfalls to simulate 2D flow and rainfall-driven runoff.

Run the model with a six-hour rainfall event, review the results, verify the infiltration and 0% volume balance, and analyze hydrographs and 2D outputs in ICM.

Explore pond analysis by creating a catchment, configuring 1D outflow and 2D conduits, assigning elevations and rainfall data, building the mesh, validating, and running the simulation.

Review the network and set inflow boundaries, run 1d/2d hydraulic models, analyze results with result polygons and stage attenuation curves to evaluate pond drainage and peak volume.

Import a Hec-ras 2D model into Infraworks ICM, build a culvert network with 2D inflow boundaries, and run a dynamic simulation, noting a 2D area error to be fixed later.

Export the catchment area from HMS, import into QGis, convert to 742.44 hectares, generate mesh, validate the model, save, and re-run the simulation as it initializes for 1D/2D hydraulic models.

Review results and compare ICM and HEC-RAS outputs, observe water flow through the culvert, note flood depths and bank overtopping, and analyze stage hydrograph showing flows around 208–232 m3/s.

Export the sewer network and catchments from sewerGEMS, using Linux export steps, import into InfoWorks ICM, then configure subcatchments, node types, inlets, and attachments to ensure a connected model.

Apply InfoWorks ICM to build a 1D/2D hydraulic model, validate the setup, run a 24-hour rainfall event, and review results including maximum flows and conduit behavior.