This work was pursued to develop and demonstrate in-house capabilities in simulating free surface flows using the Smoothed Particle Hydrodynamics method (SPH). Free surface flow is important for engineers who deal with sloshing inside containers, waves hitting ships or structures, breaking of dam wall, etc. SPH solves fluid flows by modeling the fluid as discrete particles. It does not require a mesh, and hence does not suffer from the typical limitations of mesh based methods. The current work was of interest to our customers in civil infrastructure and construction industry, who needed tools for estimating maximum water level in river or canal when it is being released from reservoir or dam.