Adelaide
17.2 River outflow from the region

Supporting information

The volume reported (167,672 ML) represents streamflow out of the Adelaide region into the ocean. The following table presents streamflow out of the Adelaide region during the 2011–12 year itemised by stream gauge.


Gauged streamflow out to sea from the Adelaide region in the 2011–12 year
Name

Gauge no.

Flow (ML)

Christie Creek downstream Galloway Rd

A5030547

3,346

Onkaparinga River 1.1 km upstream Estuary Ford Old Noarlunga

A5031005

11,228

Pedler Creek upstream mouth (Nashwauk Cres) 

A5031009

982

Field River upstream Mouth (downstream Lonsdale Road) 

A5031010

6,495

Sturt River downstream Anzac Highway

A5040549

7,305

Brown Hill Creek at Adelaide Airport (Morphett Road) 

A5040583

3,476

Little Para River downstream Port Wakefield Road

A5041006

452

Patawalonga Creek upstream Barcoo Outlet

A5041022

75

Helps Drain 100 m downstream Summer Road

A5051013

915

Barker Inlet at Barker Wetland at Outlet

A5041009

9,580

Kirkcaldy Wetland at Nash Street East Grange

A5041016

853

Barker Inlet Wetland at Northern Outlet No. 2

A5041017

2,108

Gawler River at Virginia Park

A5050510

14,326

Dry Creek 250 m upstream Salisbury Highway

A5041005

36,318

Range Wetland at Outlet 

A5041024

29,709

Magazine Wetland at Outlet 

A5041025

528

Inman River us Victor Harbour Sewage Treatment Works

A5010503

5,125

Ballaparrudda Creek at Mount Scrub Road

A5011007

159

Boat Harbour Creek near McGregor Road

A5011010

626

Deep Creek near Tappa Nappa Road

A5011011

298

Bungala River upstream Estuary 

A5011029

1,500

Yankalilla River downstream Blackfellows Creek

A5011006

3,867

River Torrens at Holbrooks Road 

A5040529

16,421

Callawonga Creek upstream mouth (Tunk Head Road)

A5011030

2,045

Hindmarsh River upstream estuary (Welch Road)

A5011027

9,935

Total

167,672

 

Quantification approach

Data source

South Australian Department of Environment, Water and Natural Resources (DEWNR): Water Data Services website, surface water archive website.

Provided by

Bureau of Meteorology (the Bureau).

Method

The total flow volume was obtained by summing the 2011–12 year streamflow from gauging stations on most major rivers in the Adelaide region including the Gawler, Torrens, Little Para and Onkaparinga rivers. Each gauging station monitors stream height, which is converted to a flow volume using a rating table. Streamflow data were obtained from the following sources:

The source of streamflow data and the number of days for which data was available are provided in the following table.

Streamflow data gauge number, source and number of days of data in the 2011–12 year
Name

Gauge no.

Source

No. of days

Christie Creek downstream Galloway Rd

A5030547

WDS

366

Onkaparinga River 1.1 km upstream Estuary Ford Old Noarlunga

A5031005

WDS

366

Pedler Creek upstream mouth (Nashwauk Cres) 

A5031009

WDS

366

Field River upstream Mouth (downstream Lonsdale Road) 

A5031010

WDS

366

Sturt River downstream Anzac Highway

A5040549

WDS

366

Brown Hill Creek at Adelaide Airport (Morphett Road) 

A5040583

WDS

366

Little Para River downstream Port Wakefield Road

A5041006

WDS

366

Patawalonga Creek upstream Barcoo Outlet

A5041022

WDS

366

Helps Drain 100 m downstream Summer Road

A5051013

WDS

366

Barker Inlet at Barker Wetland at Outlet

A5041009

SWA

366

Kirkcaldy Wetland at Nash Street East Grange

A5041016

WDS

366

Barker Inlet Wetland at Northern Outlet No. 2

A5041017

WDS

366

Gawler River at Virginia Park

A5050510

WDS

366

Dry Creek 250 m upstream Salisbury Highway

A5041005

WDS

366

Range Wetland at Outlet 

A5041024

WDS

366

Magazine Wetland at Outlet 

A5041025

WDS

366

Inman River us Victor Harbour Sewage Treatment Works

A5010503

SWA

366

Ballaparrudda Creek at Mount Scrub Road

A5011007

n/a

0

Boat Harbour Creek near McGregor Road

A5011010

n/a

0

Deep Creek near Tappa Nappa Road

A5011011

n/a

0

Bungala River upstream Estuary 

A5011029

SWA

366

Yankalilla River downstream Blackfellows Creek

A5011006

SWA

366

River Torrens at Holbrooks Road 

A5040529

WDS

348

Callawonga Creek upstream mouth (Tunk Head Road)

A5011030

WDS

366

Hindmarsh River upstream estuary (Welch Road)

A5011027

WDS

366

 

Records ended at 31 August 2010 for the following gauge stations: A5011007, A5011010 and A5011011. Data gaps for these stations were filled as follows:

  • The ratio of total flow for the 2011–12 year over the 2010–11 year was calculated for all stations less the three stations having no record in the 2011–12 year.
  • That ratio was multiplied by the values for the 2010–11 year reported in the 2011 Account for the three stations with no record to estimate their 2011–12 volumes.

Assumptions, limitations, caveats and approximations

  • Streamflow data were not available for all major rivers. The Myponga River is the most significant omission; it is not measured downstream of the Myponga Reservoir.
  • Streamflow records for some stream gauges were only available for part of the reporting period.
  • The variation of flows between the 2010–11 year and the 2011–12 year for the three stations having no record in the 2011–12 year and are assumed to be the same as the average variation over the whole region.
  • The rating table used to obtain the flow volume from the measured water level is assumed to hold for the full range of the measured water level.

Uncertainty information

The uncertainty estimate was not quantified.