A method of processing geo-statistical data includes piloting a watercraft with a monitoring system on a water body, taking measurements of a depth of the water body using the monitoring system, and taking measurements of the position of the watercraft using the monitoring system. The method also includes aligning the depth measurements with the position measurements, creating a first contour map with a first set of depth ranges from the depth and position measurements wherein each of the first set of depth ranges are separated by a first interval; and creating a second contour map with a second set of depth ranges from depth and position measurements wherein each of the second set of depth ranges are separated by a second interval that is different from the first interval.