Abstract: A water post hole digging tool is provided. The water post hole digging tool includes an elongate conduit member having an upper portion, a body portion, and a lower portion. The body portion may include a plurality of removably attached channel members. A handle is integrally attached to the upper portion of the elongate conduit member. A boring element is attached to a distal end of the lower portion. The boring element includes a concave expanding nozzle opening with a plurality of apertures for discharging water flow therefrom to change the contents of a desired hole from a solid to a slurry liquid mixture of water, sand, soil, and rocks.