Bentley OpenFlows Sewer

tiered subscription (Virtuoso) Design the Building

Comprehensive sanitary, stormwater, and combined sewer system modeling and analysis software -- part of Bentley's OpenFlows portfolio, offering 1D/2D hydraulic simulation with multiple solver options (GVF-Convex, dynamic wave), scenario management, SCADA integration, and ArcGIS/MicroStation/AutoCAD interoperability for sewer collection system planning, design, and overflow remediation at utilities and engineering consultancies.

Made by Bentley Systems, public (BSY, $10.1B)

2.4 /5 composite score
Situational -- robust sanitary/storm sewer modeling with Bentley iTwin Platform integration, multiple solver options (Saint-Venant, GVF-Convex, SWMM), and transparent starting price ($1,021/yr Essentials tier on Virtuosity e-store) partially offset quote-only higher tiers; proprietary-format lock-in within the Bentley ecosystem and steep hydraulic-modeling learning curve limit value for teams not already on Bentley infrastructure.
Situational

Rubric Scorecard

How we grade →

Criterion Score Evidence
Value for the price 3/5 tiered subscription (Virtuoso), from $1021
Agent Friendliness 2/5 API: iTwin Platform REST API (via OpenFlows integration); .NET API for desktop customization
Ease of adoption 2/5 desktop-install, steep learning curve
Portability & lock-in 2/5 5 file formats
Interoperability 3/5 6 integrations
Visit Bentley OpenFlows Sewer →

How we verified this: we checked Bentley OpenFlows Sewer against its live site and an independent source — en.virtuosity.com. Nothing on this page is listed from memory. See how we grade. Verified 2026-07-05.

Evidence

File formats

FormatDirectionSupport
WHM native full
DGN import full
GIS import full
CSV both full
DWG import full

Integrations

Bentley OpenFlows Water Bentley iTwin Platform ProjectWise ArcGIS MicroStation AutoCAD

Adoption

Deploymentdesktop-install
Self-serve signupyes
Learning curvesteep

Pricing detail

Billing unitper-seat
TiersEssentials ($1021), Standard, Advanced, Ultimate

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