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Map showing the topography of the monitoring site and the locations of the instrument arrays. The instrument arrays are labeled SP1-SP8.
Photograph showing the catchment in the Elliott State Forest and the approximate locations of the monitoring arrays (SP1-SP8).
Precipitation gauges
Rainfall is measured at the monitoring site using two 8-inch-diameter tipping-bucket rain gauges that measure 0.01 inch of rainfall per tip.
Ground Water and Atmospheric Pressure - Piezometers
The monitoring site is equipped with four piezometers. Three were installed in boreholes at various depths below the ground surface, one at each of the monitoring arrays along the axis of the catchment (SP2, SP1, SP5). The fourth was placed in an enclosure near array SP1 to measure changes in atmospheric pressure.
Ground Water Pressure - Tensiometers
Each instrument array (SP1-SP8) at the monitoring site is equipped with three tensiometers located at various depths. The tensiometers are connected with current transducers that can measure pore-water pressures in the range of +850 hPa to -1000 hPa. The location and depth of the porous tips of each of the tensiometers are indicated on the graphs.
Soil Water Content
Each instrument array (SP1-SP8) at the monitoring site is equipped with three capacitance-based instruments to measure the volumetric water content of the soil. The location and depth of the instruments are indicated on the graphs.
Soil Temperature sensors
Each tensiometer and piezometer has a built-in temperature sensor, either a thermistor or Resistive Temperature Device (RTD). Soil temperature measurements are used to correct measurements by the other instruments and to provide an indication of when the ground is frozen.
