Ranger mine monitoring data

Gulungul Creek monitoring data 2010-2013

The graphs on this web page show the following key chemical indicators for the 2010 - 2013 wet seasons plus water level from the Gulungul Creek downstream monitoring station (GCDS). Data for physico-chemical parameters and filterable analyte concentrations from previous wet seasons can be found at Gulungul Creek grab sample monitoring data 2002 - 2010.

The Supervising Scientist's interpretation of the data in these charts is available at:

Conductivity in Gulungul Creek

The conductivity limit of 42 µS/cm was ectoxicologically derived and applies to exposures greater than 72 hours in duration. The Supervising Scientist has developed an appropriate interpretive framework for the less than 72 hour pulse exposure EC data produced by the continuous monitoring program. Details can be found on the Ecotoxicological Electrical Conductivity-Magnesium Pulse Framework page.

Gulungul Creek continuous monitoring data (conductivity) from the 2010-11 to 2012-13 wet seasons.

Gulungul Creek continuous monitoring data (conductivity) from the 2010-11 to 2012-13 wet seasons.

Turbidity in Gulungul Creek

The turbidity guideline of 26 NTU was determined statistically from historical weekly grab sampling data, and applies to water quality measured in grab samples. This guideline may be exceeded occasionally due to natural events but should not be exceeded due to mining activities.

Gulungul Creek continuous monitoring data (turbidity) from the 2010-11 to 2012-13 wet seasons

Gulungul Creek continuous monitoring data from the 2010-11 to 2012-13 wet seasons.

Uranium in Gulungul Creek

The uranium limit of 6 µg/L has been derived using local ecotoxicological data in accordance with the Australian Water Quality Guidelines to protect 99% of the species present. The limit must not be exceeded. Please note that the limit is far above the range shown on the charts.

Gulungul Creek uranium data from the 2010-11 to 2012-13 wet seasons.

Gulungul Creek uranium data from the 2010-11 to 2012-13 wet seasons.

Manganese in Gulungul Creek

The manganeselimit of 75 µg/L has been derived using local ecotoxicological data in accordance with the Australian Water Quality Guidelines to protect 99% of the species present. The limit applies to creek flows ≥ 5 cumecs and must not be exceeded.

Gulungul Creek manganese data from the 2010-11 to 2012-13 wet seasons

Gulungul Creek manganese data from the 2010-11 to 2012-13 wet seasons.

Magnesium in Gulungul Creek

The magnesium limit of 3 mg/L has been derived using local ecotoxicological data in accordance with the Australian Water Quality Guidelines to protect 99% of the species present. The limit applies to a 72 hour exposure duration and must not be exceeded.

The Supervising Scientist has developed an appropriate interpretive framework for the less than 72 hour pulse exposure EC data produced by the continuous monitoring program. Details can be found on the Ecotoxicological Electrical Conductivity-Magnesium Pulse Framework page.

Gulungul Creek magnesium data from the 2010-11 to 2012-13 wet seasons

Gulungul Creek magnesium data from the 2010-11 to 2012-13 wet seasons.

Sulfate in Gulungul Creek

There is no specific guideline for sulfate in Gulungul Creek. EC is strongly correlated to sulfate. Therefore, the trigger values for electrical conductivity referred to when interpreting sulfate data. For comparison, the drinking water standard with taste as the criterion for sulfate is 250 mg/l.

Gulungul Creek sulfate data from the 2010-11 to 2012-13 wet seasons

Gulungul Creek sulfate data from the 2010-11 to 2012-13 wet seasons.