Bureau of Meteorology logo
 
                           

Murray–Darling Basin

                                                                                                   

14.4 Overbank flood spilling

                             

Supporting information   


The volumetric value for the line item is 398,250 ML (see the following table for the breakdown of the volume).

Diversions from overbank flood spilling within the Murray–Darling Basin (MDB) region for 2009–10

Region no.

Region name

State

Volume

(ML)

Uncertainty

1

Paroo

Qld/NSW

1,500

40%

1.1

Paroo – Qld

Qld

1,500

40%

1.2

Paroo – NSW

NSW

–

–

2

Warrego

Qld/NSW

3,500

40%

2.1

Warrego – Qld

Qld

3,500

40%

2.2

Warrego – NSW

NSW

–

–

3

Condamine–Balonne

 

376,900

40%

3.1

Condamine–Balonne – Qld

Qld

376,900

40%

3.2

Condamine–Balonne – NSW

NSW

–

–

4

Moonie

Qld/NSW

15,000

40%

4.1

Moonie – Qld

Qld

15,000

40%

4.2

Moonie – NSW

NSW

–

–

5

Border Rivers

Qld/NSW

1,350

40%

5.1

Border Rivers – Qld

Qld

1,350

40%

5.2

Border Rivers – NSW

NSW

–

–

6

Gwydir

NSW

–

–

7

Namoi

NSW

–

–

8

Macquarie–Castlereagh

NSW

–

–

9

Barwon–Darling

NSW

–

–

10

Lower Darling

NSW

–

–

11

Lachlan

NSW

–

–

12

Wimmera–Avoca

Vic

–

–

13

Ovens

Vic

–

–

14

Goulburn–Broken

Vic

–

–

15

Loddon

Vic

–

–

16

Campaspe

Vic

–

–

17

Murrumbidgee

NSW/ACT

–

–

17.1

Murrumbidgee – NSW

NSW

–

–

17.2

Murrumbidgee – ACT

ACT

–

–

18

Murray

NSW/Vic/SA

–

–

18.1

Murray – NSW

NSW

–

–

18.2

Murray – Vic

Vic

–

–

18.3

Murray – SA

SA

–

–

19

Eastern Mount Lofty Ranges

SA

–

–

 

Total

398,250

 

– = no data available

The Queensland volume shown in the table is for overland flood harvesting. This includes both overbank flood spilling and run-off harvesting. It is assumed that the bulk of this water was due to overbank flood spilling because of the flooding that occurred within Queenland during 2009–10.

For Condamine–Balonne – Qld, the value of 376,900 ML is the sum of overland flow take in the Condamine–Balonne–Culgoa system (376,800 ML) and in the Nebine system (100 ML).

Quantification approach   


Data source

Australian Capital Territory: Water Audit Monitoring Report 2009–10 (30 November 2010).

New South Wales: Water Audit Monitoring Report 2009–10 (11 February 2011).

Queensland: Water Audit Monitoring Report 2009–10 (31 January 2011).

South Australia: Water Audit Monitoring Report 2009–10 (22 February 2011).

Victoria: Water Audit Monitoring Report 2009–10 (19 January 2011).

Note: Water audit monitoring (WAM) report data are stored in the Murray–Darling Basin Authority (MDBA) HYDRO database.

Data provider

MDBA.

Method

The WAM data used were estimates based on user returns. These estimates are provided by users of the water and submitted to water authorities.

Uncertainty

See the above table entitled ’Diversions from overbank flood spilling within the region for 2009–10’.

Approximations, assumptions, caveats/limitations

Nil.