3.3 Hydrological and soil water monitoring
Streamflow monitoring has resumed at the outlets of catchments III, IV, V, VI, VII and IX. The original weirs and stilling huts were repaired, and water stage-height is monitored using an Orpheus Mini (Ott Hydromet GmbH, Germany) at weirs IV, V, VI and VII, and CS451 Stainless steel SDI-12 Pressure Transducers and with CR200 loggers at weirs III, VI and IX. The two pressure transducers installed at weir VI are to ensure the quality of streamflow records from the core catchment. Water quality measurements of EC, TDS, PH, DO, ORP and temperature are taken on a monthly basis using a YSI Professional Plus multi-probe at each of the monitored weirs, including water sample collections for DOC. Soil water is monitored continuously in Catchment VI using a Cosmic Ray Probe for spatial soil water and CS616 Water Content Reflectometers installed to a depth of 1.4 m at the EC tower. In Catchments III and IX soil water is monitored using CS616 Water Content Reflectometers at the site of the energy balance measurements. Complementary spatially distributed, monthly measurements of soil water are made using a Diviner 2000 (Sentek). Soil surveys have been undertaken as well.