Dredging Surveys in Central California
eTrac performed pre-dredge, conditional, and post-dredge surveys at a harbor in Central California. The depth differences can be best viewed by observing these images from the pre-dredge and post-dredge surveys. The surveys were 8 days apart, the majority of the dredging occurred in areas 3D, 3C, 3B, and 3A. Data collected during these daily surveys were used to calculate the volumes of sediment that was removed daily, as well as produce cross sections and depth soundings for the dredgers.