I am trying to figure out how much pressure will water exert on the walls of the pond. The circular pond has a radius of 10 ft and depth of 2.5 ft. Pressure = density (water) * depth Pressure = 62.4 lb/ft3 * 2.5 ft = 156 lb/ft2 or 1.083 psi That will give me the maximum pressure which will be at the bottom of the pond. Correct? Or I need to add gravity to the equation? I am basically trying to figure out what will be the maximum pressure applied by the water so that based on that I can choose the strength of the material for the pond. Thanks for help.