Procedure for Changing the Compact Flash Card at the Jacoby Creek Gauging Station

The Jacoby Creek Gauging station will take data every five minutes (on the hour, 5, 10, ... 45, 55 after the hour). Check your watch for the correct time (you can do this when you sync the Hobo shuttle). That way you should be close to the station’s data times. Although this is not critical, if you change the card between the five-minute data intervals, the station will not miss any data points.

• Check the site:
  o Check the solar panel for cracks.
  o Check the sensor. Make sure it is pointing straight down at the water and that there are no obstructions between it and the water surface. Any adjustments to the sensor or removal of the obstructions should be noted and one more data point should be taken noting the time.
  o Check the conduit, and that the enclosures are secure.

• Open the top enclosure
  o With the mirror found in the enclosure, look at the status LEDs located under the flash card. If the bottom LED is flashing green it is safe to turn off the gauging station power (see LED status definitions).
  o If there is any other LED activity, wait until it has completed and the lower LED is flashing green.

• Turn off the gauging station power by moving the toggle switch to the opposite position.
• Remove the flash card by pulling it to the right.
• Remove the replacement card from the storage case and slide it into the connector. While applying even pressure push the card firmly into place.
• Place the flash card that has the current data on it in the storage case and place it in the toolbox or another safe place for transport. Make a note in the field log as to which card and the date of retrieval.
• Power the station on by moving the toggle switch to its original position.
• Check the bottom LED and make sure it is flashing green.
• Wait for the next data event to verify the stations operation.
• Place the mirror in the enclosure.
• Close and lock the enclosure.