This paper describes the development of an analytical instrument, the Dynamic Probe, designed to monitor and profile a water or wastewater filter bed. This analytical instrument is capable of measuring the available head at various locations across the filter bed in service and also the pressure at various locations across the filter bed during reverse flow (backwash). Additionally, this analyzer is able to communicate to Supervisory Control and Data Acquisition (SCADA) computers and/or Programmable Logic Controllers (PLC) through an open, addressable communications protocol.