Slide Inspection of Canal Banks
High-resolution lidar data were collected and compared to historical contour data to evaluate the condition of canal banks. Lidar point cloud data with a horizontal accuracy of 0.6-m root mean square error (RMSE) and vertical accuracy of 15-cm RMSE were used to create 1–foot (0.3-m) contours of a canal side-slope that had been slipping. This contour map was compared to the original AutoCAD contours to calculate the amount of change and the areas impacted. This comparison was not straightforward.