HydroCAD
Civil engineering design software
CAD software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$195 per year
Free Trial unavailableFree version unavailable
Small
Medium
Large
- Agriculture, fishing, and forestry
- Energy and utilities
- Public sector and nonprofit organizations
What is HydroCAD
HydroCAD is a stormwater runoff and detention pond modeling application used to size and analyze drainage systems, storage facilities, and outlet structures. It targets civil engineers, land development consultants, and reviewers who need hydrologic and hydraulic calculations and report outputs for permitting. The product focuses on watershed-based modeling workflows (subcatchments, routing, ponds, and outlets) rather than general-purpose drafting, and it supports common runoff methods and hydrograph routing approaches used in site design.
Engineering report outputs
The software produces calculation summaries and tabular results that can be included in submittals for plan review. Standardized outputs help engineers document assumptions such as runoff method parameters, stage-storage, and stage-discharge relationships. This can streamline internal QA and communication with permitting agencies compared with ad hoc spreadsheet workflows.
Purpose-built stormwater modeling
HydroCAD concentrates on hydrology and detention/retention design tasks such as hydrograph generation, routing through ponds, and outlet structure evaluation. This specialization can reduce setup time compared with broader civil design suites when the primary need is stormwater calculations and reports. It is commonly used for land development drainage studies where quick iteration of pond and outlet parameters is required.
Iterative scenario comparison
HydroCAD supports rapid what-if analysis by adjusting watershed parameters, routing links, and outlet configurations and re-running models. This is useful for evaluating alternative pond geometries, control structures, and release rates under multiple storm events. The workflow is oriented to comparing scenarios without requiring a full CAD/BIM model update for each iteration.
Not a full CAD platform
Despite being used alongside design drawings, HydroCAD is not a general CAD environment for producing full civil plan sets. Users typically rely on separate CAD tools for grading, alignments, pipe network drafting, and sheet production. This can introduce coordination overhead between the calculation model and the drawing set.
Limited broader civil modeling
The product focuses on stormwater hydrology/hydraulics and does not replace broader civil engineering design capabilities such as roadway corridor modeling, comprehensive utility network design, or integrated BIM workflows. Teams needing end-to-end design and model-based coordination may need additional software for those disciplines. As a result, HydroCAD often functions as a specialized component in a larger toolchain.
Integration depends on exports
Data exchange with other engineering and CAD systems typically relies on file-based exports, manual parameter transfer, or project-specific conventions rather than a single unified model. This can increase the risk of version drift between calculations and drawings if processes are not controlled. Organizations may need documented workflows to keep pond geometry, storage curves, and outlet details synchronized across tools.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Permanent License — 5-node | $295 one-time | Entry-level permanent license; includes Quick-start tutorial, built-in help, free email support, and 90 days of software maintenance. |
| Permanent License — 20-node (recommended) | $895 one-time | Most popular capacity; handles majority of projects; same maintenance included. |
| Permanent License — Range (node-based) | $295 to $2,395 one-time | HydroCAD uses a sliding price scale based on node capacity (up to 1000 nodes). |
| Annual License — 5-node | $195 per year | All-inclusive 1-year license; updates and support included for the year. |
| Annual License — 20-node (recommended) | $375 per year | Most popular annual option; includes software updates and support during the license year. |
| Node Capacity Increase (Permanent licenses) | $300 per step per user | Permanent-license node-capacity increases are sold in "steps" (10, 20, 40, 90, 200, 450, 1000); each step costs $300 per user. |
