Ambient estuarine water quality monitoring data - 1993 to 2013

Brief description

Monthly chemical, physical and biological water column profile data at 88 sites in tidal rivers, streams and inshore waters of Central Queensland from samples and *in situ* measurements.

**Monitoring department:** DSITIA and predecessor organisations
**Monitoring program name:** Central Queensland Ambient
**Monitoring program design:** National Water Quality Management Strategy (NWQMS), Australian Guidelines for Water Quality Monitoring and Reporting (ANZECC & ARMCANZ 2000)
**Monitoring protocols:** Department of Environment and Heritage Protection (2009) Monitoring and Sampling Manual 2009
**Monitoring methods:** American Public Health Association (APHA) and American Water Works Association (AWWA) (1998) Standard methods for the examination of water and wastewater
**Monitoring frequency:** Monthly
**Monitoring platform:** Drifting boat
**Monitored water body:** Tidal Estuary
**Monitored location:** Mid stream or mid channel at routine sites and regular depths
**Monitored tidal condition:** Mid to falling tide
**Data format:** Comma separated text
**Data missing or not monitored:** Blank cell
**Data resolution:** Monitoring site, Monitoring date, Monitoring water depth
**Data quality:** Data results are best available and comply with all documented methods
**Data format for each parameter:** Data qualifier text field and may contain a "less than" symbol, "greater than" symbol or blank cell. Data numerical value
**Monitoring site ID:** A 13 character ID code unique for each DSITIA monitoring site
**Monitoring site description:** Description detail that may include distance to a river mouth
**Monitoring site latitude:** Latitude as decimal degrees in GDA94 datum
**Monitoring site longitude:** Longitude as decimal degrees in GDA94 datum
**Monitoring date:** Date of the monitoring survey in DD/MM/YYYY format
**Monitoring time:** Time of the monitoring survey at a site as HHMMSS in 24h format
**Monitoring water depth:** Depth below the water surface with 0.2m the near surface depth
**Secchi depth (m):** Surface measurement
**Chlorophyll-a (ug/L):** Surface algal biomass samples collected at 0.2m depth
**Physiochemical parameters:** *in situ* physiochemical profile measurements start at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom

- Dissolved Oxygen concentration (mg/L)
- Dissolved Oxygen % saturation (%)
- pH
- Salinity (PSU)
- Specific Conductance at 25 deg C (mS/cm)
- Temperature (°C)
- Turbidity (NTU)

**Surface nutrient parameters:** samples collected at 0.2m depth

- Ammonia as N (mg/L)
- Organic Nitrogen as N (mg/L)
- Nitrogen Oxides as N (mg/L)
- Total Nitrogen as N (mg/L)
- Filterable Reactive Phosphorus as P (mg/L)
- Total Phosphorus as P (mg/L)

Full description

Fitzroy River (Drainage basin 130) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at 12 Fitzroy River tidal estuarine sites and sample nutrients at two sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 130 \r\n**Water body:** Tidal estuarine sections of the Fitzroy River from below the barrage to the sea at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Calliope River and anabranch (Basin 132) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at nine Calliope River tidal estuarine sites and sample nutrients at two sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 132 \r\n**Water body:** Tidal estuarine sections of the Calliope River and the Calliope River anabranch at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Boyne River and South Trees Inlet (Basin 133) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemicals at six Boyne River and South Trees Inlet sites and sample nutrients at three sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 133 \r\n**Water body:** Tidal estuarine sections of the Boyne River and South Trees Inlet at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Baffle Creek (Drainage basin 134) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at six Baffle Creek tidal estuarine sites and sample nutrients at four sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 134 \r\n**Water body:** Tidal estuarine sections of the Baffle Creek at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Kolan River (Drainage basin 135) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at five Kolan River tidal estuarine sites and sample nutrients at one site. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 135 \r\n**Water body:** Tidal estuarine sections of the Kolan River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Burnett River (Drainage basin 136) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at 10 Burnett River tidal estuarine sites and sample nutrients at six sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 136 \r\n**Water body:** Tidal estuarine sections of the Burnett River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Burrum River (Drainage basin 137) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at four Burrum River tidal estuarine sites and sample nutrients at two sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 137 \r\n**Water body:** Tidal estuarine sections of the Burrum River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Isis River (Drainage basin 137) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at three Isis River tidal estuarine sites and sample nutrients at one site. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 137 \r\n**Water body:** Tidal estuarine sections of the Isis River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Gregory River (Drainage basin 137) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at three Gregory River tidal estuarine sites and sample nutrients at one site. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 137 \r\n**Water body:** Tidal estuarine sections of the Gregory River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Mary River (Drainage basin 138) - DSITIA staff sample Chlorophyll-a, observe Secchi depth and measure physiochemical depth profiles at 12 Mary River tidal estuarine sites and sample nutrients at two sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 138 \r\n**Water body:** Tidal estuarine sections of the Mary River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Great Sandy Straits and Hervey Bay (Drainage basin 138) - DSITIA staff sample Chlorophyll-a, observe Secchi and measure physiochemical profiles at eight Great Sandy Straits and Hervey Bay sites and sample nutrients at four sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 138 \r\n**Water body:** Tidal estuarine sections of the Mary River at mid-stream monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)
Tin Can Inlet & Snapper Creek (Drainage basin 140) - DSITIA staff sample Chlorophyll-a, observe Secchi and measure physiochemical profiles at seven Tin Can Inlet and Snapper Creek sites and sample nutrients at three sites. \r\n \r\n**Period of operation:** From 1993 to 2013 \r\n**Region:** Central Coast Queensland \r\n**Australian drainage basin:** 140 \r\n**Water body:** Tidal estuarine sections of the Tin Can Inlet and Snapper Creek at mid-channel monitoring sites \r\n**Water column profile depth:** Monitoring starts at a depth of 0.2m near the water surface and the water column profile is monitored at regular 2m intervals plus the last available depth greater than 0.5m above the bottom \r\n**Secchi depth:** AS 3550.7-1993 \r\n**Algal biomass Chlorophyll-a :** APHA & AWWA (1998) monochromatic method [Ref: Lorenzen, Carl J. (1967) Limnology and Oceanography, Vol12: pp343-346.] \r\n** *in situ* physiochemical profile:** Currently the *in situ* physiochemical depth profiles are measured with YSI model 6-Series Sondes such as the YSI 6920 V2 handheld multi probe sonde connected to a data recorder. The YSI 6920 V2 has been in use since 2011. The YSI 610 – 650 was used from 1998 to 2012. The YSI 3800 was used from 1993 to 2001. Up to 1998 a range of Martek, Hydrolab and TPS instruments as well as some earlier YSI models were used. [Ref YSI Multiparameter Water Quality Sondes User Manuals] \r\n\r\n- Dissolved Oxygen concentration (mg/L) \r\n- Dissolved Oxygen % saturation (%) \r\n- pH \r\n- Salinity (PSU) \r\n- Specific Conductance at 25 deg C (mS/cm) \r\n- Temperature (°C) \r\n- Turbidity (NTU) \r\n\r\n**Surface nutrient samples:** APHA (1998) Queensland Health Forensic and Scientific Services photochemical methods using a flow injection analyser (FIA). A laboratory method change in 1997 improved the Kjeldahl digestion of samples resulting in a lower Organic Nitrogen detection limit. In 1999, a change in the laboratory instrument has led to slightly lower and more stable Nitrogen Oxides and Filterable Reactive Phosphorus results. A 1999 change replaced the higher temperature and stronger acid concentration Kjeldahl digestion with Persulphate Oxidation digestion which in some circumstances will extract less P from particulates with the effect of an apparent small reduction in Total Phosphorus results. These changes are mostly apparent at low levels and the differences lie within the precision range of the method. \r\n\r\n- Ammonia as N (mg/L) \r\n- Organic Nitrogen as N (mg/L) \r\n- Nitrogen Oxides as N (mg/L) \r\n- Total Nitrogen as N (mg/L) \r\n- Filterable Reactive Phosphorus as P (mg/L) \r\n- Total Phosphorus as P (mg/L)