Abstract
The first step in any and all digital modeling endeavors is obtaining field data. Measurement techniques vary in complexity and accuracy from the most basic tools such as a measured piece of rope, to the electronic total station, to aerial photogrammetry and LIDAR and satelite imagery. One of the most accurate and efficient methods is aerial photogrammetry because it can cover extended areas quicker than land based measurement systems and has much better accuracy than satellite measurements. Also it is becoming more affordable and easy to operate, to the point that it requires very little operating experience. As such, measurement trials using UAV photogrammetry have been carried out in preparation for a study that requires digital modeling of the terrain for rainfall parameter analysis and comparison.