Dewatering is a process operation used to reduce the moisture content of sludge and dredged sediment. Dewatering reduces the final disposal handling volume, thereby reducing cost of transportation and landfilling. Geotextile tube dewatering technology is gaining popularity due to its advantages of being able to handle very large slurry volumes, achieving very high solids capture rate and requiring low capital investment. The economics is even more attractive if the dewatering facility is also designed as a landfilling facility, thereby avoiding the need to transport the dewatered solids away. Often the dewatering operation requires stacking of geotextile tubes into a mound in order to reduce the footprint area required. The material contained within the geotextile tube is typically fine grained and saturated and therefore can undergo significant compression as a result of overburden pressure from geotextile tube layers stacked above. This paper proposes the solution for estimating the vertical deformation of a stacked mound of geotextile tubes of uniform layer thickness.