Ranger mine monitoring data 2013-2014

Gulungul Creek monitoring data 2013-2014

The graphs on this web page show the following key chemical indicators for the 2013 - 2014 wet season 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 and Gulungul Creek monitoring data 2010-2013.

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 ecotoxicologically derived and applies to exposures greater than 72 hours in duration. The Supervising Scientist has developed an 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 commencement of the 2013-14 wet season.

Gulungul Creek continuous monitoring data (conductivity) from the commencement of the 2013-14 wet season.

Turbidity in Gulungul Creek

The turbidity guideline of 26 NTU was determined statistically from historical weekly grab sampling data from Magela Creek. In the absence of a site specific guideline for Gulungul Creek the Magela Creek guideline, which applies to water quality measured in grab samples, can be used as an indicative guide to the water quality within Gulungul Creek. 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 commencement of the 2013-14 wet season.

Gulungul Creek continuous monitoring data (turbidity) from the commencement of the 2013-14 wet season.

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 commencement of the 2013-14 wet season.

Gulungul Creek uranium data from the commencement of the 2013-14 wet season.

Manganese in Gulungul Creek

The manganese guideline of 75 µg/L was ecotoxicologically derived and applies to creek flows greater than 5 cumecs. This guideline may be exceeded occasionally due to natural events but should not be exceeded due to mining activities.

Gulungul Creek manganese data from the commencement of the 2013-14 wet season.

Gulungul Creek manganese data from the commencement of the 2013-14 wet season.

Magnesium in Gulungul Creek

The magnesium limit of 3 mg/L was ecotoxicologically derived and applies to exposures greater than 72 hours in duration. The Supervising Scientist has developed an interpretive framework for the less than 72 hour pulse exposure magnesium data produced by the continuous monitoring program. Details can be found on the Ecotoxicology Electrical Conductivity-Magnesium Pulse Framework page.

Gulungul Creek magnesium data from the commencement of the 2013-14 wet season.

Gulungul Creek magnesium data from the commencement of the 2013-14 wet season.

Sulfate in Gulungul Creek

There is no specific guideline for sulfate in Gulungul Creek. EC is strongly correlated to sulfate. Therefore, the guideline for electrical conductivity is 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 commencement of the 2013-14 wet season.

Gulungul Creek sulfate data from the commencement of the 2013-14 wet season.