"I have been using VO for a while now. Modelling with VO is quite helpful and made the job easy. Required tools are within reach and the user interface is very well designed. I like the way it is programmed to run multiple network scenarios and also run multiple simulations with different rainfall data."

"Most of my work includes modelling development sites and stormwater management. The model is very easy to model with and to extract the results."

"VO is great. The addition of SWM LID made it a top-notch software for SWM and LID modelling. It is very user-friendly, and it is fast when computing."

"VO has allowed me to clearly and accurately model stormwater ponds in Ontario. It is easy to learn with the assistance of the user manual, reference guides, and tutorials. The interface is highly intuitive and easy to get used to. The staff at Smart City Water are quick to respond to requests. As a student in Environmental Engineering, VO has been essential to my research."

“Our users are Water Resources Engineers and [the] software is used to review digital VO models submitted in support of development applications. As a HYMO users who started off with SWMHYMO, the interface of VO is a lot more user-friendly."

"I had the opportunity to utilize VO OTTHYMO for my thesis project focused on modelling stormwater management ponds and their upstream catchments in Vaughan, Ontario. This software proved to be an indispensable tool for my research, providing robust simulation capabilities that allowed me to accurately predict the hydrologic response of urban catchments to various real-time rainfall events. VO's intuitive interface and detailed output options made it easy to configure my hydrologic model. The manual also provided very clear and easy-to-follow instructions and descriptions of model components to help me get started on building my very own VO model for the first time. The project outcomes were pivotal, not only for my academic development but also for contributing practical insights into how stormwater pond design and monitoring may improve in the future. The technical support provided by the SCW team, helped me to navigate initial learning curves and in successfully implementing my specific research needs. The team’s prompt and professional response to my questions have helped me tremendously."

"I’ve been using VO Model for the past eight years, and it has significantly enhanced the efficiency and accuracy of our project outcomes. The software’s intuitive interface allows for easy integration of complex datasets, and its robust modeling capabilities have streamlined our hydrological analyses, saving me valuable time and resources. One achievement was using VO Model to refine our flow simulations for urban creeks in Mississauga, which led to more better-informed decision-making. The key benefits of VO Model are its user-friendly design, the ability to handle large datasets with ease, and the impressive flexibility in creating customized models. The real-time results and clear visualizations have made it easier to communicate findings to non-technical stakeholders, which is invaluable in my line of work. Additionally, the responsive support team has been extremely helpful whenever I've had questions or needed guidance. I highly recommend VO Model to anyone in the field of hydrology or water resources engineering. Whether you’re a seasoned professional or new to modeling software, VO Model provides the tools you need to succeed, and I’m confident it will continue to be an essential part of my work moving forward.”

"I have over 26 years of experience in water resources engineering, including stormwater management design for subdivisions and site plans, road reconstruction projects, and hydrologic and hydraulic studies. VO is my first-choice software for SWM analysis and design. VO has an easy-to-use interface for constructing a SWM model, including flexibility in the selection of hydrograph types. The ‘drag and drop’ and element connectivity features allows for large and relatively complex models to be constructed easily including flow routing, minor/major flow splits, and LIDs. I would recommend using VO as an efficient and effective analysis and design tool for SWM applications.”

“We have used the VO software for stormwater management design, subdivision planning and site plan design. While we have also used other HYMO-based software programs, we have found using Visual OTTHYMO (VO) is EASY. Some benefits include:
1. Easy model setup.
2. Easy storm event data input and command parameters.
3. Easy to extract the modeling results for presentation and report.
Along with the advantage of graphic visualization, we recommend VO for the modelling.”

"I have been pleasantly surprised at how easy VO has been to learn!”

"What stands out most about VO is how simple it is to use. With only a few key parameters required, you can build models quickly without getting bogged down in unnecessary inputs. The schematic interface is intuitive, and simulations run fast—even for large catchments. It’s a practical, reliable tool we trust for our planning and design projects."

"TRCA has utilized VO for over a decade in a wide range of watershed studies and regulatory applications. The platform has played a critical role in advancing TRCA’s understanding of hydrologic processes and supporting sound technical decisions in floodplain management, stormwater assessment, and environmental planning. VO’s ease of use, reliability, and strong alignment with provincial and municipal technical standards have made it a dependable tool within TRCA’s modelling framework."

"The LSRCA very much appreciates the support of Smart City Water related to the VO software package. Through the administration of our flood mapping programs and development review to protect people and property from flooding, we see many different hydrologic scenarios across a large and geographically diverse area. Smart City Water staff have always been responsive in assisting LSRCA with using VO effectively to deliver on our mandate."