An irrigation consultant is on site today and Saturday, mapping the current irrigation system using the GPS device shown above. To mark every irrigation head, quick connect and isolation valve, he simply holds this device over the head while the coordinates are recorded. This takes approximately 10 to 15 seconds per sprinkler head. Once complete, the information can be applied to a map or satellite image to show the proper distribution of heads across the property. This is the precise information we need to plan on irrigation improvements in the future.