You can try HEC-RAS, more details can be found in https://www.hec.usace.army.mil/software/hec-ras/documentation/HEC-RAS%205.0%20Reference%20Manual.pdf

If one uses not 100% common sense abbreviations (or even sufficiently, an abbreviation from a scientific field not everybody is mandatory familiar with), than it is polite and good practice to spell out what an abbreviation means on its first occurrence in the text.

Thomas Frank Suggestion followed.

Nitesh Khadka : Thank you ;-))