Quite simply, the finest drainage design software ever released

Subscribe or buy it once and own it forever. It's your choice.

Select License Option
Subscription
Perpetual License

See FAQ Below

Most
Popular

The Hydrology Studio Suite

All the stormwater modeling tools you’ll need. Consistent workflows add professionalism to your work. Highly recommended for site development.

$1,195

One-time payment

$399/yr

Hydrology Studio

$595

One-time payment

$240/year

Start producing higher quality drainage designs with Hydrology Studio. You’ll perform pre- and post-development drainage studies faster than before. Buy it as stand-alone or bundle it with the Suite.

Stormwater Studio

$595

One-time payment

$240/year

Offers a modern user-interface with time-tested methodologies you can trust. Integrate it with your existing CAD software. Agency-friendly. Buy it as stand-alone or bundle it with the Suite.

Culvert Studio

$395

One-time payment

$120/year

Replace your outdated culvert design software with something new. Model culverts with various shapes, sizes, slopes, inlet configurations and materials. Buy it stand-alone or bundled with the Suite.

Channel Studio

$395

One-time payment

$120/year

Open channel modeling software with an outstanding user-interface. Models channels, bridges, bridge scour, culverts and inline weir structures. Buy it stand-alone or bundled with the Suite.

Studio Express

$395

One-time payment

$120/year

Calculates everything you need, when you need it. Channels, Pipes, Weirs, Orifices, Inlets, Runoff Hydrographs, Detention Pond Sizing and a lot more. Buy it stand-alone or bundle it with the Suite.

Frequently Asked Questions

The Subscription license has a significant lower up-front cost with a low annual fee to keep the software active. It automatically renews each year until you cancel. You’ll get automatic software updates and free technical support. You will always have the latest version. 

The Perpetual license is a one-time cost and you will own the software forever as it never expires and includes automatic software updates. Adding the optional Annual Maintenance at check-out provides you with technical support, just like the Subscription license. The Annual Maintenance is a single flat fee of $99 per year, until cancelled. 

Both licenses are on-premise installations. The software installs and runs on your computer, not on the Internet. Your data files will always remain intact, on-premise, on your computers, even if your Subscription expires.

So which is right for you?

That’s entirely up to you. Some buyers prefer to blend the subscription cost into their annual operating budget. Others prefer to pay it up front. The break-even point is about three years. 

Yes. The Single-Seat License allows you to install and use your software on up to two of your devices. For example, you can use it on your work computer and on your personal computer at home or a laptop.

The Five-Seat Bundle provides you with five (5) individual seats that can be installed and activated simultaneously. They can be used on multiple computers, anytime, anywhere.

The Five-Seat Bundle offers a tremendous cost savings and is an excellent choice for firms with multiple offices and/or work-at-home employees who need unrestricted access to the software. See, “Flexible Licensing” below for additional cost-saving benefits.

All Hydrology Studio software includes a built-in floating (network) license server that allows you to move licenses from one computer to another with just three mouse clicks. Your software can be installed on as many devices as you want, but you can only use it simultaneously up to the number of seats purchased. (Two for the Single-Seat or up to 5 with the 5-Seat Bundle).

For example, if you purchased a Single Seat License but have 4 users, all users have access, but only 2 can use the software simultaneously. At any time, you can simply log-out from any one of the installs and log-in on another computer; in a branch office, at home, a laptop, or on a new computer for example.

This is easily accomplished right in your software and comes standard with Subscription and Perpetual licenses.

You’re in good company. There are over 5,000 users of this software. Mainly in the domestic USA, but also in Canada, Australia, New Zealand, Belgium, Switzerland, Brazil, Mexico, Ireland, Turkey, Egypt, South Africa, France, Spain, Portugal, Serbia, Malaysia, Nigeria, Ethiopia, Romania, Philippines, South Korea, Chile, the Netherlands and India.

Here’s the breakdown:

45% Consulting civil engineering firms
40% Self-employed professionals and firm startups
10% Government (City, County, State)
5% Education (Colleges, Universities)

We typically produce an update on one of products about every three months while keeping a keen eye on usability and bloat.

The Trial versions have some minor functional limitations. For example, you will not be able to save any of your project files. All printed reports will be watermarked. There may also be limits on inputs. However, you will certainly be able to give them a good test run. There is no time limit.

Our online store is fully automated and runs 24/7, so you will receive your activation codes instantly. No wait times. Your Account page will populate with your new License Keys and Purchase History for which you can access anytime. 

They are automatic. Your software checks for new updates each time it’s launched. If one is available, you will be prompted to update. Just click [Ok] and seconds later your software will start as usual, but will be the latest version. Details of the new version(s) are listed in Updates and Release History in the Help.

Installation is a piece of cake. Just click on any of the “Download/Install Free Trial” links throughout this website. After that, just click the [Install] button for the software you’d like. 

The software will then automatically download and install itself… takes only seconds. You’ll see a new shortcut icon on your desktop and you’ll be ready to run the software. The initial install will be the Trial version. A purchased License Key unlocks the Trial into the full version.

Stormwater Studio and Culvert Studio trials will automatically open with a sample project for you to play around with.

We accept all major credit cards including Visa, MasterCard, American Express, Discover, checks and PayPal. Need an invoice first? Just contact us and we’ll prepare one for you.

Yes. All of our software functions in both U.S. Customary and metric (SI) units.

Yes. It actually runs a little faster on Windows 11.

Absolutely! Older hydraulics & hydrology software struggle on high definition (4k) monitors. Our software is device independent, scales correctly and looks beautiful on any display, especially 4K monitors.

Reviews

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  • We have been using Hydrology Studio for almost 2 years at this point and they have a customer for life.
    The software that comes bundled is outstanding and is simple to use. Their staff is very knowledgeable and is always willing to answer questions. They have videos on how to use their software which gets you up and running quickly.
    We received a comment from a regulatory agency and the software developer incorporated the agencies comment into their product. OUTSTANDING COMPANY, PRODUCT, AND CUSTOMER SERVICE!!!

  • Great Software

    I’ve been using Stormwater Studio along with Autodesk Civil 3D to import pipe networks and analyze them and print reports. Reports are easy to modify to your liking. Hydrology Studio is also easy to use, in both programs rainfall data is easy to set up for different locations. The other nice thing about the programs, they are constantly being updated with new additional features. I am very happy using the Hydrology Studio suite.

  • Great Software

    East to use and very practical. Keep up the great work!

  • Valuable software

    As more of a casual user these days, I find that the software is capable of doing much more than I need it to, as my design work is limited to piping network designs and retrofitting existing basins. My only extremely minor gripe is that I can sometimes get lost in all the capabilities when I just want to do something simple, but that is on me, not the software.

  • Perfect For Our Operation

    I bought this program to size smaller stream crossing structures like round culverts and arches. I find the software very easy to use and I include the hydraulic reports in our project plans. The reports do an excellent job to demonstrate the planned hydraulic capacity and they are so easy to produce that I even include one for the current structure for dramatic effect (it shows a tidal wave of water flowing over the road, fun!). We use other methods to come up with design flows, but there is an option to use the rational method to derive expected flows (generally over-estimates, but in the engineering world I guess that's not a bad thing!).

  • Great Product

    I have been using Hydrology Studio for last 2-3 years and I am very impressed with the ease of use, user interface of this program. You can print out professional looking reports and they've got very good customer service. And all this you can get at a very reasonable price.

    Thanks a lot to the Hydrology Studio Team.

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  • Civil Engineering Project Manager

    Easy to use, fast and accurate, overall a good product at a reasonable price.

  • Great Product

    I’ve been using versions of this for twenty years. Each one gets better. Easy to set up, great pond configuration options, easy to run trials, view/print friendly reports. I highly recommend!

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    Five Stars.

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  • County Highway Engineer

    I rely on Hydrology Studio software for review of many development submittals. It is easy to use and gives me the information I need, quickly. I have used this software for years.

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  • Managing Partner GA Dixon Associates

    Software is easy to use and easy to learn. Support is really great. We use the software constantly. Really can’t beat it for the money

  • Very good software and exceptional support

    We have used stormwater studio almost 2 years now. To evaluate the software, we modeled several past projects to compare with our prior modeling software and had comparable results. After a little bit of a learning curve, it is very simple and intuitive.

    When we have had some issues to figure out, Tech support has gotten right back to us. Overall, we have been pleased using a quality software product at a reasonable price with exceptional tech support. Thanks.

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  • Hydrology Studio Express Delivers

    On-grade inlet efficiency calculations may not be quantum physics but are fairly involved. I usually prefer to write my own code or use a spreadsheet. But I couldn't improve on Studio Express. It works the way I would have done it myself.

    Thanks for a fantastic product that delivers great results.

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