Thank you for visiting our website. We hope that the experience was useful. For the past 24 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 385 programs to solve a wide variety of problems. In addition, we have posted more than 1000 videos for your information, learning, and enjoyment.

Since 2007, we have posted 56 nutshells on a variety of topics, including groundwater sustainability, glaciology, and salinity management. Since 2009, we have posted 32 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.