Thank you for visiting our website. We hope that the experience was useful. For the past 23 years (since June 1999), we have developed online applications of our activities in teaching, research, consulting, and service. We feature rich content, easy navigation, fast loading, and attractive style.

Our    is a world-class provider of free online hydrologic and hydraulic software. We feature more than 385 programs to solve a wide variety of problems. In addition, we have posted close to 900 videos for your information, learning, and enjoyment.

Since 2007, we have posted 57 nutshells on a variety of topics, including groundwater sustainability, glaciology, and salinity management. Since 2009, we have posted 31 pubs+calcs on topics such as flood hydrology, open-channel hydraulics, and unsteady flow in open channels. In these articles, you can calculate while reading.