GeoHECHMS Reviews & Product Details

GeoHECHMS, our stormwater modeling software, greatly speeds up the creation, analysis, and review of stormwater projects. It is a data wrapper to the industry-standard US Army Corps of Engineers HEC-HMS software using an AutoCAD compatible graphical user interface. GeoHECHMS offers: • Automated HEC-HMS Workflows • AutoCAD Civil 3D & ArcGIS Integration • Automated Watershed Delineation • Detention Pond Design • Purpose-Built Stormwater Design Tools • Automated TOC & Lag Time • Automated CN Computations • Comprehensive Report Generation GeoHECHMS lets you quickly compare different scenarios and alternatives, such as pre-development conditions with different post-development designs. Rapidly construct, design, analyze and compare detention and retention ponds.

Product Website

Seller

CivilGEO, Inc.

Languages Supported

English

Product Description

GeoHECHMS greatly speeds up the creation, analysis, and review of stormwater models. It automates subbasin delineation, curve number (CN) computation using land use and soils maps, and lag time (time of concentration) computation. GeoHECHMS is a data wrapper to the industry-standard US Army Corps of Engineers HEC-HMS software using an AutoCAD compatible graphical user interface. Quickly compare different scenarios and alternatives, such as pre-development conditions with different post-development designs. Rapidly construct, design, analyze and compare detention and retention ponds. Both US and metric (SI) units are supported.

Overview by

Chris Maeder (Engineering Director at CivilGEO Engineering Software)

Discussions

GeoHECHMS Community

Value at a Glance

Averages based on real user reviews.

Perceived Cost

$$$$$

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GeoHECHMS Integrations

(4)

Verified by GeoHECHMS

GeoHECHMS Media

GeoHECHMS Demo - Automated HEC-HMS Workflows

Greatly speed up stormwater projects with automated workflows to automatically delineate watersheds, compute curve numbers (CN), compute TOC & lag times, compute % impervious, assign design storms, size detention ponds, and generate engineering reports.

Integrate HEC-HMS directly with AutoCAD (including AutoCAD Civil 3D), Bentley MicroStation and ESRI ArcGIS map data. Export completed HEC-HMS models and results to AutoCAD, MicroStation and ArcGIS.

GeoHECHMS Demo - Automated Watershed Delineation

Delineate subbasins and watersheds from 3D digital elevation terrain data. Utilize AutoCAD Civil 3D surfaces, MicroStation surfaces, contours, TINs, DTMs, DEMs, survey points, LiDAR, and other external digital elevation terrain data.

GeoHECHMS Demo - Complete Land Use Coverage

Complete land use coverage is provided for USA, Canada, Europe, Australia and many other parts of the world. For the USA, land coverage data is provided at a 100 x 100-foot grid cell size. This makes it extremely easy to compute composite curve numbers, time of concentrations, lag times and more.

GeoHECHMS Demo - Complete Imperviousness Coverage

Complete percent imperviousness coverage is provided for the USA at an approximate 100 x 100-foot grid cell size. This allows a more accurate stormwater model to be developed, allowing urbanization effects to be directly incorporated into the stormwater model.

GeoHECHMS Demo - MDI Multiple Model Editing

Load, edit, and run multiple HEC-HMS models simultaneously. The Multiple Document Interface (MDI) allows easy copying and pasting between models, quick comparisons of input data and results between scenarios, and other modeling efficiencies. Models can be displayed in tiled windows or tabbed view...

Official Downloads

(1)

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GeoHECHMS Stormwater Modeling Literature

GeoHECHMS Reviews (114)

View 6 Video Reviews

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Ryan O.

Assistant Project Manager in Water Resources

Enterprise (> 1000 emp.)

11/3/2025

"GeoHECHMS: Intuitive, Fast, and Easy for Hydrological Studies"

5/5

What do you like best about GeoHECHMS?

GeoHECHMS has taken our typical Hydrological Drainage Studies and amplified the speed with which we can complete them. The User Interface makes it quick and easy to work with and is extremely intuitive towards new employees learning the program. We are able to implement it quickly and easily into the majority of our work. My favorite part of the program is the ease of delineating large scale watershed subbasins that can be refined to smaller acreage if you are looking for a more detailed study of larger scale watersheds. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

There really is not much to dislike. If I would have one recommendation, it would be that they push updates quite often and it can be cumbersome when one employee working on a project is on a later version from the week before and has to update to work in the current version weekly. Review collected by and hosted on G2.com.

What problems is GeoHECHMS solving and how is that benefiting you?

GeoHECHMS is our primary modeling program when analyzing watersheds. Typically, we utilize the program to delineate subbasins and gather hydrological data that is necessary to implement into our hydraulic modeling, such as the results hydrographs the program gives us. We also use the program to run our dam breach analysis for dams that breach at level pool. The program makes it easy to organize the many different scenarios that are necessary for dam breach analysis. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello Ryan,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding the frequent updates. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Verified User in Civil Engineering

Enterprise (> 1000 emp.)

12/11/2025

"Revolutionizes Watershed Analysis with Powerful GIS Integration"

4.5/5

What do you like best about GeoHECHMS?

GeoHEC-HMS makes it easier to analyze watersheds using spatial data through leveraging GIS capabilities on top of HEC-HMS. It allows automatic watershed delineation from elevation models, integrates land use and soil data, and provides map-based visualization for better accuracy and interpretation. This integration improves runoff and flood predictions, simplifies data management, and supports scenario analysis for projects like stormwater planning and flood risk assessment. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

GeoHEC-HMS has some disadvantages, such as a steep learning curve because it requires both GIS and hydrologic modeling skills. It also depends on high-quality spatial data, which may not always be available, and setting up and calibrating models can be time-consuming. Additionally, it often needs powerful hardware and, if used with commercial GIS software, can involve extra licensing costs. Review collected by and hosted on G2.com.

What problems is GeoHECHMS solving and how is that benefiting you?

The integration of GIS in GeoHEC-HMS is a major benefit for us as it allows hydrologic models to use real-world spatial data for greater accuracy and efficiency. With GIS tools, you can automatically delineate watersheds from elevation data, assign land use and soil properties to sub-basins, and visualize hydrologic elements on a map. This spatial approach ensures that runoff calculations reflect actual terrain and land characteristics, making predictions more reliable. It also simplifies data management by directly importing GIS layers, reducing manual input and errors, and enabling quick scenario analysis for changes in land use or rainfall patterns. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hi,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding a steep learning curve and need for heavy hardware. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com. Thank you!

Verified User in Civil Engineering

Mid-Market (51-1000 emp.)

12/7/2025

"Modern, Comprehensive Solution for Hydrologic Analysis"

5/5

What do you like best about GeoHECHMS?

GeoHECHMS provides all of the external resources that could be necessary for a complete hydrologic analysis.

The original Army Corps of Engineers HEC-HMS software always seemed like an "old" software regarding its interface and features. GeoHECHMS upgrades it to a modern software. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

I have not used the software enough to discover its downsides. Compared to regular HEC-HMS, GeoHECHMS is an upgrade, and I haven't used any other software like it to compare it against. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello,

Thank you for taking the time to share your review; your comments certainly made our day! We're thrilled to learn how you are improving your engineering projects and work processes with GeoHECHMS. It is extremely gratifying to know that GeoHECHMS meets your needs and helps you achieve your goals. Please let us know if there is anything else we can do to assist you. We value our customers and look forward to working with you in the future.

Thank you!

Tim A.

Principal/Project Manager

Small-Business (50 or fewer emp.)

12/12/2025

"Effortless Stormwater Modeling with Excellent Support"

5/5

What do you like best about GeoHECHMS?

Easy to use and works well modeling stormwater runoff from complete site grading. Much easier to use than the USCOE base program. Importing linework and grading surfaces from Civil 3D is easy to complete. CivilGeo support is very responsive and helpful. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

Does not provide a benefit when analyzing small sites. Referencing support files can get tricky when sharing with collegues. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding analyzing small sites. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Verified User in Civil Engineering

Small-Business (50 or fewer emp.)

12/4/2025

"Effortless Hydrology Modeling with GeoHECHMS"

5/5

What do you like best about GeoHECHMS?

CivilGEO’s GeoHECHMS has been great to use. The layout is clear, the tools make sense, and it takes a lot of the hassle out of building and updating HEC-HMS models. It runs smoothly and genuinely saves time on projects. Overall, a solid, user-friendly bit of software that makes hydrology work easier. Excellent customer support and constant updates to improve the software. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

Reaches are sometimes inaccurate on a design surface created with a very small cell size. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding inaccurate reaches. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Verified User in Consulting

Small-Business (50 or fewer emp.)

9/17/2025

"Fabulous"

5/5

What do you like best about GeoHECHMS?

Can model both natural and urbanized watersheds. Supports mixed development watershed conditions.

Highly modular architecture allows for easy integration of hydrologic modeling needs and graphical Environment

Includes a user-friendly Watershed map visualization, data entry utilities. Its advanced Hydrologic Capabilities

Supports a wide range of hydrologic processes:

Infiltration (e.g., SCS Curve Number, Green)

Evapotranspiration, Baseflow and Channel Routing. We Can Add storge Capacity, Nodes, and

In Addition to its Interoperability, it works with other HEC software i.e., HEC-RAS). and uses data storage and retrieval, enabling integration with other hydrologic and hydraulic H&H models. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

All models in HEC-HMS are deterministic, they assume exact knowledge of initial and boundary conditions.

This can limit realism in scenarios where uncertainty or probabilistic behavior is important.

Parameters are assumed to be time-stationary, they don’t change over time.

Simplified Flow Representation and it does not support complex networks in urban engineering systems. lack of advance urban pipe network features creates redundancies and uncertainties. For long simulations, parameters must be manually adjusted between segments. this creates time consuming issues. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding the mentioned issues. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Camille D.

Hydrological Engineer

Small-Business (50 or fewer emp.)

9/22/2025

"Very supportive staffing and accessible resources."

5/5

What do you like best about GeoHECHMS?

The most helpful is the staffing as well as the detailed error codes when running the software allows for efficient tried and error/ solving issues when they arise. I also appreciate that there are multiple ways to get the same function whether its the ribbon or right clicks. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

Some of the work flow is less straight forward and it is very sensitive to missing information/parameters. I would like it if the inputs where more guided instead of an iterative process. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello Camille,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding the complex workflow that can miss information. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Bernardo Z.

Gestor Tecnico - Socio Proprietario

Small-Business (50 or fewer emp.)

12/1/2023

"Civil Geo HMS Drainage Study Review"

5/5

What do you like best about GeoHECHMS?

The software is being helpful for Drainage Studies, within determining Basins and Sub basins as well as flow volumes. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

We still have the issue with entities that does not accepted some of the parameters of Civil Geo, so we still have wo work with HEC-1 and Flowmaster simultaneous with Civil Geo. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello Bernardo,

Thank you very much for sharing your review. Your feedback helps us create high-performing software, so never hesitate to let us know what we’re doing right—or how we can improve!

We also appreciate hearing your concerns regarding some entries not being accepted. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. Your input is invaluable in this regard and helps us meet this important goal.

Reach out any time at support@civilgeo.com.

Thank you!

Christopher L.

Civil Engineer

Mid-Market (51-1000 emp.)

8/23/2023

"Effectively Helpful"

5/5

What do you like best about GeoHECHMS?

I really appreciate the program allowing the user to import shapes from dgn and allowing you to use those shapes to define your drainage area. It does not take much time to create the areas and junctions so that flows are created. Also, the reports are well written out. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

Automate is good for an idea of what is out there but not for review. Other than that, I like the program. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hi Christopher, thanks a lot for sharing your review. Reading comments like yours gives a boost to our confidence; and, of course, we are very pleased to know that GeoHECHMS helps you achieve your engineering goals.

We also appreciate hearing your concern regarding automatically finding TC at the junctions. Rest assured, our team is constantly working to improve the many features and overall workability of GeoHECHMS. To ensure you have the best experience in the future, reach out to us at support@civilgeo.com. Thank you!

Paul S.

Senior Engineer

Small-Business (50 or fewer emp.)

9/4/2025

"Great software with lots of features that are superior to GIS and CAD"

4.5/5

What do you like best about GeoHECHMS?

One-stop shop for data collection and project review. The terrain data functions are also the best of all the available softwares. Review collected by and hosted on G2.com.

What do you dislike about GeoHECHMS?

License manager can sometimes be finnicky. Review collected by and hosted on G2.com.

Response from Sara Presta of GeoHECHMS

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Hello Paul,

Thank you!