Your account has been permanently deleted.

Permanently delete your account and all associated data. This action cannot be undone.

This action is permanent and cannot be undone. This will permanently delete your account and remove all your data from our servers.

Are you absolutely sure?

Manage your profile, subscription, and notification settings.

Please provide a star rating and a comment.

You now have access to the {plan} module.

Receive monthly updates, news, and case studies.

Your profile has been successfully updated.

Receive an email when an Optimization, Calibration, or Pipe Design run is complete.

You have successfully purchased {count} additional runs.

Manage your current plan and access available modules.

You can have a maximum of 3 members in your team.

Manage your team members and invitations.

My Account

Monitor your simulation runs and purchase more if needed.

Our team is working on sharing insights, case studies, and engineering updates. Stay tuned!

Insights, case studies, and engineering updates from the HydroBOA team.

Blog

Delete Project?

Untitled Project

Sign up today and experience the future of hydraulic modeling.

Ready to Revolutionize Your Workflow?

Track all your simulations from a single dashboard. Monitor progress, view results, and manage your files with ease.

Centralized Project Management

Run complex simulations for optimization, calibration, and pipe design directly in the cloud. Submit multiple jobs and keep working.

Advanced Simulation Modules

From raw data to refined design, HydroBOA Builder transforms how you manage engineering files. View, edit, and analyze SWMM and EPANET models with a powerful offline-first platform.

See HydroBOA Builder in Action

Professional EPANET 2.2 simulations online. Analyze water distribution systems, optimize pipe networks, and simulate pressure zones in your browser.

EPANET Online Water Distribution & Pipe Network Analysis | HydroBOA

EPANET Use Cases

For computationally intensive tasks, HydroBOA uses secure cloud services:

☁️ Cloud Compute When It Matters

HydroBOA is a professional engineering app for SWMM, EPANET, and HEC-RAS project workflows that runs in your browser and on mobile devices — with an offline-first design environment and on-demand cloud simulation power.

The Difference

A look inside the SWMM, EPANET, and HEC-RAS workspace — drafting, GIS, version control, and side-by-side analysis, all in one browser-based engineering environment.

See HydroBOA in Action

🗺️ GIS + Modeling + Versioning in One System

HydroBOA accelerates drafting, iteration, optimization, and reporting. Export to desktop tools for specialized regulatory or 2D simulations when required.

How It Fits With Legacy Tools

Most engineering SaaS stops working without internet. HydroBOA doesn’t.

The core design environment runs locally on your device:

🔌 Offline-First Engineering Workspace

HydroBOA minimizes unnecessary data transfer.

🔒 Privacy-First Architecture

Experience the next level of hydraulic engineering with HydroBOA.

Ready to Start?

HydroBOA accelerates the engineering work around modeling:

⚡ 90% Faster Preliminary Design

HydroBOA — Hydraulic Design Anywhere, Cloud Power When You Need It

Select a .inp file to upload. It will be saved to your projects list.

Run HEC-RAS river simulations online. 1D and 2D flood modeling, floodplain management, and USACE engine compliance in the cloud.

HEC-RAS Online River Hydraulics & Flood Simulation | HydroBOA

HEC-RAS Use Cases

Offline geospatial vectors rendered with clarity.

Cartographic Precision

Intelligence woven into every document you read.

Neural Summary

Your assets, organized and indexed for enterprise scale.

Sovereign Data

A sophisticated ecosystem for hydrologists, civil, and environmental engineers. Professional SWMM, EPANET, and HEC-RAS modeling on Windows, Linux, macOS, Android, and iOS.

HydroBOA: All-in-One Engineering App

Fine-tune your SWMM models with our sophisticated multi-objective calibration engine.

Choose the .inp file you want to calibrate.

Step 1: Select File

Set your calibration parameters and targets.

Step 2: Configure Calibration

Calibration Module

Leverage powerful differential evolution algorithms for optimal hydraulic design and analysis.

Choose the .inp file you want to optimize.

Step 2: Configure Optimization

Optimization Module

Optimize Low Impact Development controls for sustainable urban drainage.

Choose the .inp file for LID optimization.

Step 2: Configure LID

LID Optimization Module

Streamline your pipe network design process with intelligent, automated suggestions.

Set your design parameters and constraints.

Step 2: Configure Design

Automated Pipe Design

Identify critical pipes and nodes and assess network vulnerabilities.

Choose the .inp file for severity analysis.

Step 2: Configure Analysis

Severity Analysis Module

A standard pack for regular project needs.

10 Extra Runs

A bulk pack for heavy users and large projects.

25 Extra Runs

A small pack for when you need just a few more simulations.

5 Extra Runs

Deploy your own custom models and algorithms on our scalable infrastructure.

Custom

Get started with HydroBOA's core platform for all your modeling needs.

Basic

Full platform access with LID optimization and network severity analysis.

LID & Severity Analysis

The complete package for model optimization and calibration.

Optimization & Calibration

The complete suite for automated pipe design and comprehensive analysis.

Pipe Design

Choose the subscription that best fits your engineering needs. Special pre-launch pricing available now!

Find the Perfect Plan

Run EPA SWMM 5.2.4 simulations directly in your browser. Professional stormwater modeling, urban drainage design, and flood risk assessment without software installation.

Run SWMM Online for Stormwater and Drainage Modeling | HydroBOA

SWMM Use Cases

Learn how to run SWMM, EPANET, and HEC-RAS online with our step-by-step guides. Master flood optimization and pipe design in the browser.

Engineering Tutorials & Cloud Simulation Guides | HydroBOA

<p>Engineers searching for <strong>SWMM web app</strong>, <strong>EPANET online</strong>, <strong>HEC-RAS cloud</strong>, or <strong>run hydraulic models online</strong> are often forced into a compromise—either install heavy desktop software or settle for browser tools running <strong>WebAssembly (WASM) ports</strong> or <strong>JavaScript (JS) approximations</strong> that don't match the output of the real simulation engines.</p>

<p><strong>HydroBOA removes that compromise entirely.</strong></p>

<p>HydroBOA is a <strong>single, unified web app</strong> where engineers design SWMM, EPANET, and HEC-RAS models offline and run simulations in the cloud — all from one interface. It also includes <strong>automated optimization, calibration, and pipe design</strong> built directly into the platform.</p>

<hr/>

<h2>What Makes HydroBOA Different?</h2>
<p>HydroBOA is built on a <strong>hybrid architecture</strong> that separates design and computation. You design and edit models locally — even offline — and when you're ready, simulations run on cloud infrastructure using the actual government engines. One app, one workflow, three engine types.</p>

<hr/>

<h2>Offline Design: Work Without Interruption</h2>
<p>HydroBOA functions as an <strong>offline-capable app</strong>, allowing engineers to:</p>
<ul>
<li>Create and edit SWMM, EPANET, and HEC-RAS models in a single workspace</li>
<li>Upload and manage model files across all project types — HydroBOA converts standard .inp files into its own .boa format, stored locally on-device or synced to the cloud</li>
<li>Work without continuous internet access</li>
<li>Maintain fast, responsive performance for all design tasks</li>
<li>Continue projects in the field or low-connectivity environments</li>
</ul>
<p>Your workflow continues—regardless of connectivity.</p>

<hr/>

<h2>Powered by the Official Government Simulation Engines</h2>
<p>When you run a simulation, HydroBOA sends your model to dedicated cloud infrastructure where the official, unmodified engines execute it natively:</p>
<ul>
<li><strong>EPA SWMM 5.2.4</strong> — the U.S. Environmental Protection Agency's stormwater and wastewater simulation standard, used worldwide for urban drainage design, flood routing, and regulatory compliance.</li>
<li><strong>EPANET 2.2</strong> — the EPA's water distribution network modeling engine for pipe network analysis, pressure zone design, and water quality simulation.</li>
<li><strong>HEC-RAS</strong> — the U.S. Army Corps of Engineers' river analysis system for 1D and 2D flood modeling, bridge hydraulics, and floodplain mapping.</li>
</ul>
<p>Every simulation result is fully compliant with U.S. federal, EPA, and industry standards. No WASM abstraction layers. No JS approximations. Native execution on dedicated cloud infrastructure, delivering the <strong>same numerical output</strong> as running these engines on your local machine.</p>

<hr/>

<h2>Model Versioning and Dual-View Comparison</h2>
<p>HydroBOA includes a <strong>built-in version control system</strong> for model files:</p>
<ul>
<li>Every save creates a versioned snapshot — roll back to any previous state at any time</li>
<li><strong>Dual file viewing</strong> lets you compare two versions side by side — before and after automated calibration, different optimization runs, or any two points in a model's history</li>
<li><strong>Clash detection</strong> across different model types helps identify conflicts when working with overlapping SWMM, EPANET, and HEC-RAS networks in the same project area</li>
</ul>
<p>No external version control tools or manual file naming required.</p>

<hr/>

<h2>Built-In File Viewer</h2>
<p>HydroBOA includes a <strong>view mode</strong> that opens most file types generated within the app — PDFs, simulation reports, exported documents, and project assets — without leaving the platform. No need to download files or switch to a separate application to review results.</p>

<hr/>

<h2>Asset Management — Design and Manage in One Place</h2>
<p>Most hydraulic engineering platforms treat <strong>model design and asset management as separate products</strong> with separate licenses. HydroBOA brings both into <strong>a single application</strong>:</p>
<ul>
<li>Manage infrastructure assets alongside the models that simulate them</li>
<li>Track asset condition, metadata, and lifecycle within the same workspace used for design</li>
<li>No separate license, no separate software, no data export/import between systems</li>
</ul>
<p>This is a capability <strong>no other hydraulic modeling platform offers in one app</strong>.</p>

<hr/>

<h2>Mobile-First with Full GIS Capabilities</h2>
<p>No licensed hydraulic modeling platform offers a mobile app with GIS-based model editing. Their mobile offerings are limited to dashboards, result viewers, or asset monitoring.</p>
<p>HydroBOA runs natively on <strong>iOS, Android, tablets, and desktops</strong> as a progressive web app. Engineers get the same GIS-powered editing environment on a phone in the field as they do on a workstation in the office — including map-based model construction, layer management, and geospatial analysis.</p>

<hr/>

<h2>Automated Optimization, Calibration, and Pipe Design</h2>
<p>HydroBOA integrates <strong>automated engineering workflows</strong> directly into the platform:</p>
<ul>
<li>Automated <strong>model calibration</strong> for SWMM and EPANET models</li>
<li>Parameter <strong>optimization workflows</strong> to systematically improve model performance</li>
<li><strong>Pipe sizing and design automation</strong> for water distribution networks</li>
<li>Reduced manual trial-and-error across all supported model types</li>
</ul>
<p>All algorithms run <strong>server-side</strong> — your device stays free and you stay productive.</p>

<hr/>

<h2>Built Around Real Engineering Workflows</h2>
<p>Every feature in HydroBOA was designed around the tasks engineers actually perform daily:</p>
<ul>
<li>Design stormwater, wastewater, water distribution, and river models in one place</li>
<li>Run simulations from any browser — results come back to the same interface</li>
<li>Visualize results on <strong>interactive maps</strong> with precision geospatial layers — satellite imagery, OpenStreetMap, custom rasters</li>
<li>Annotate models with <strong>sticky notes</strong> and track mandatory field completion across large networks</li>
<li>Export results to <strong>PDF, DOCX, PPTX</strong>, and standard GIS formats including <strong>shapefiles and GeoJSON</strong></li>
</ul>

<hr/>

<h2>Key Features</h2>
<ul>
<li>One unified app for SWMM, EPANET, and HEC-RAS model design</li>
<li>Cloud simulation using official government engines</li>
<li>Offline-capable progressive web app (PWA)</li>
<li>Built-in automation — no programming required</li>
<li>Model versioning with dual-view comparison and clash detection</li>
<li>Integrated asset management — no separate license needed</li>
<li>Interactive profile plot editor — web and mobile</li>
<li>Full GIS-based editing on any device including phones and tablets</li>
<li>Built-in file viewer for PDFs, reports, and project assets</li>
<li>Interactive map visualization with geospatial layers</li>
<li>Export to PDF, DOCX, PPTX, shapefiles, and GeoJSON</li>
<li>Cross-platform access — Windows, macOS, Linux, Android, iOS</li>
<li>No installation required</li>
</ul>

<hr/>

<h2>Professional Comparison</h2>

<h3>Traditional Open-Source Desktop Tools</h3>
<ul>
<li>Manual installation and configuration per engine</li>
<li>Limited to local machine performance</li>
<li>No built-in automation — calibration and optimization require programming knowledge (Python, MATLAB, etc.) and significant coding effort</li>
<li>File-based workflows with manual handling</li>
<li>Separate software for each engine type</li>
<li>No model versioning or comparison tools</li>
<li>No asset management capability</li>
<li>Profile view is read-only — editing requires switching to property tables and dialog boxes</li>
<li>Desktop-only — no mobile or tablet support</li>
<li>Optimization and calibration tie up local hardware for hours or days</li>
</ul>

<h3>Licensed Desktop Platforms</h3>
<ul>
<li>Expensive licenses tied to specific hardware with limited remote flexibility</li>
<li>Automation often limited or requires external tools</li>
<li>Asset management sold as a separate product with its own license</li>
<li>No built-in model versioning or dual-view diff</li>
<li>Profile view limited to visualization in most tools — editing inverts and elevations requires separate property editors or plan views</li>
<li>No mobile app with GIS-based model editing</li>
<li>Long-running simulations and optimization consume local resources, leaving devices unavailable for other work</li>
</ul>

<h3>HydroBOA</h3>
<ul>
<li>One app for all three engine types</li>
<li>Offline design + cloud simulation</li>
<li>Uses real, unmodified government engines</li>
<li>Built-in automation — no programming required</li>
<li>Model versioning with dual-view comparison and clash detection</li>
<li>Integrated asset management — design and manage in one place</li>
<li>Interactive profile plot editor — adjust pipe inverts, node elevations, and geometry directly on the profile from any device</li>
<li>Full GIS-based model editing on any device — including phones and tablets</li>
<li>Simulations and optimization run server-side — freeing your device and your time to focus on other work</li>
</ul>

<hr/>

<h2>Why Hybrid Matters</h2>
<p>Most hydraulic modeling tools fall into one of two categories: offline-only desktop tools that lack scalability and cross-device access, or cloud-only tools that depend entirely on connectivity and can't match real engine output.</p>
<p>HydroBOA combines both — design locally, simulate in the cloud, automate optimization — resulting in a <strong>more flexible, efficient, and reliable workflow</strong>.</p>

<hr/>

<h2>The Future of Hydraulic Modeling</h2>
<p>HydroBOA represents a shift toward web-based engineering platforms with cloud-powered simulation and integrated automation. One app that handles the full lifecycle — from model design to simulation to asset management to optimization — without switching tools or compromising on engine accuracy.</p>

<hr/>

<h2>Get Started</h2>
<p>HydroBOA enables engineers to move beyond installation-heavy, fragmented workflows into a <strong>single, scalable modeling environment</strong>.</p>
<p><strong>One app. Offline design. Cloud simulation. Real engines. Automated optimization.</strong></p>
<p>That's HydroBOA.</p>

Blog

HydroBOA: A Hybrid SWMM, EPANET, and HEC-RAS Web App with Offline Design and Cloud Simulation