Environmental flows - 2007

Home | Human Settlement | Water Supply & Sewage Management | Environmental Flows | 2003

Indicator description

What does the Data tell us for 2007

The interim environmental objectives for the Shoalhaven River have been influenced by:

·         Healthy Rivers Commission report on Shoalhaven River;

·         Sydney Catchment Authority water extraction licence;

·         Water Management Act 2000.

Table 49 - Shoalhaven River Flow and Diversions 2003/04 – 2006/07 (megalitres)

 

TALLOW INFLOW

BURRIER PUMPS

 Month

2003/4

2004/5

2005/6

2006/7

2003/4

2004/5

2005/6

2006/7

July

25,022

3,545

152,673

35,726

1,192

1,415

1,044

1,016

August

12,683

2,885

11,837

21,451

1,189

430

1,109

903

September

7,429

2,117

8,133

21,526

1,543

1,965

1,125

1,195

October

10,154

23,614

6,577

3,917

1,268

1,747

1,261

1,065

November

24,237

14,046

71,871

4,696

1,529

1,244

1,127

1,110

December

17,077

38,239

27,839

2,378

1,363

1,342

1,339

539

January

4,487

8,760

13,130

3,225

1,640

1,500

1,599

1,669

February

5,463

19,918

7,821

86,628

1,188

1,151

1,241

2,167

March

7,179

21,698

3,747

29,893

1,477

1,207

1,129

1,110

April

15,655

9,747

1,881

12,346

1,371

1,176

434

1,115

May

3,805

9,822

2,197

7,841

1,376

1,138

1,053

1,035

June

2,500

12,705

47,038

419,288

540

1,015

2,325

434

TOTAL

135,691

167,096

 354,744

648,915

15,675

15,330

 14,786

13,358

% Diverted

 

 

 

 

11.55%

9.17%

4.16%

2.06%

 

Table 50 - Environmental Objectives

Overview

Achievements

Environmental flow determined by EIS in 1998.

Adoption of Drought Management Plan for water abstraction system.

Previous communication with Sydney Catchment Authority (SCA).

 

Measurement and management of environmental flows from Danjera Dam and flood flows at the Dam.

Bulk Water Supply Agreement with SCA and Bulk Water Supply Protocols incorporate environmental releases.

2006/07 Drought

(Dec to March)

Low inflows over summer 2006/07 enacted the Drought Management Plan and water restrictions applied across the city for approximately three months.

Releases from Danjera Dam, allowed pumping at Burrier.
Table 50a - Environmental Objectives (Targets)

Objective

Target

Maintain Environmental Flow objectives

Monitor weather, inflows, consumption and maintain dialogue with Sydney Catchment Authority for compliance with the Environmental Flow regime and efficient use of water resource.

Review Environmental Flow/ Extraction Regime

Work in partnership with the State Government in understanding economic, environmental, social and engineering studies into proposed environmental flow and extraction regime proposed for water supply to Sydney.

 

 

Home | Human Settlement | Water Supply & Sewage Management | Environmental Flows | 2007