Burrum River WQIP 2012
Total Page:16
File Type:pdf, Size:1020Kb
Draft Version 7.0 June 2008 PREPARATION STATEMENT The Burrum Catchment Water Quality Improvement Plan (WQIP) was drafted by Dr Michael Walker, Water Management Officer, Mary & Burrum, Wide Bay Water Corporation (WBWC). Funding for this task was provided jointly by the Burnett Mary Regional Group for Natural Resource Management (BMRG) and Wide Bay Water Corporation under a strategic partnership to improve water quality. The Burrum Catchment Water Quality Improvement Plan covers the Burrum, Cherwell, Gregory and Isis River catchments, which discharge via the Burrum estuary to Hervey Bay. Assistance was provided by Dr Graeme Esslemont Water Quality and Equitable Use Coordinator, BMRG (formerly a member of the short term modelling project team set up to assist NRM bodies with their target setting responsibilities under the Reef Water Quality Protection Plan). Dr Esslemont undertook the necessary modelling work (SedNet and ANNEX) one of the tools used to set water quality targets utilised in this plan. Burrum Catchment Water Quality Improvement Plan - i - Burrum Water Quality Improvement Plan, Preparation Status Document and Version Control Document Title: Burrum Water Quality Improvement Plan Client: Wide Bay Water Corporation and Burnett Mary Regional Group for Natural Resource Management Date Created: June 2007 Last Updated: 30 June 2008 Author: Michael Walker Version: First draft in various stages as compiled Burrum Catchment Water Quality Improvement Plan - ii - CONTENTS PREPARATION STATEMENT .......................................................................................................................... I 1.0 CHAPTER 1: BACKGROUND TO THE BURRUM CATCHMENT WATER QUALITY IMPROVEMENT PLAN......................................................................................................................... 1 1.1 INTRODUCTION ........................................................................................................................ 2 1.2 UNITED NATIONS GLOBAL PROGRAMME OF ACTION ......................................................... 4 1.3 NATIONAL POLICIES AND PROGRAMMES............................................................................. 4 1.3.1 Framework for Marine and Estuarine Water Quality Protection .................................... 4 1.3.2 The Great Barrier Reef Water Quality Protection Plan (Reef Plan) .............................. 5 1.3.3 Coastal Catchments Initiative ........................................................................................ 6 1.4 STATE/REGIONAL POLICIES AND PROGRAMS..................................................................... 7 1.4.1 Environmental Protection (Water) Policy....................................................................... 7 1.4.2 Water Resource Planning.............................................................................................. 8 1.4.3 Regional Coastal Management Plan ........................................................................... 10 1.4.4 The Wide Bay Burnett Regional Plan .......................................................................... 10 1.4.5 Natural Resource Management Plan .......................................................................... 10 1.5 WATER QUALITY IMPROVEMENT PLAN............................................................................... 11 2.0 CHAPTER 2: THE BURRUM RIVER CATCHMENT (PHYSICAL CHARACTERISTICS, ACTIVITIES, GEOGRAPHY, ECONOMY, PEOPLE, GOVERNANCE)................................................................... 13 2.1 THE BURRUM CATCHMENT................................................................................................... 14 2.1.1 Burrum Estuary............................................................................................................ 16 2.1.2 Burrum River................................................................................................................ 17 2.1.3 Cherwell River.............................................................................................................. 18 2.1.4 Gregory River............................................................................................................... 18 2.1.5 Isis River ...................................................................................................................... 18 2.2 PEOPLE & ECONOMY............................................................................................................. 19 2.3 EXISTING WATER INFRASTRUCTURE ................................................................................. 19 2.4 CLIMATE & RAINFALL ............................................................................................................. 21 2.5 GEOLOGY & SOILS ................................................................................................................. 22 2.5.1 Dam Rubble Sediment................................................................................................. 23 2.5.2 Soil suitability ............................................................................................................... 24 2.5.3 Soil erosion .................................................................................................................. 24 2.6 ESTUARY DYNAMICS ............................................................................................................. 25 2.6.1 General ........................................................................................................................ 25 2.6.2 Tides ............................................................................................................................ 25 2.6.3 Tidal Flows................................................................................................................... 26 3.0 CHAPTER 3: CURRENT WATER QUALITY ..................................................................................... 27 3.1 MONITORING PROGRAMS..................................................................................................... 28 3.1.1 Wide Bay Water Corporation (WBWC)........................................................................ 30 3.1.2 Environmental Protection Agency (EPA)..................................................................... 30 3.1.3 Friends of the Burrum River System Group (FBRSG)................................................. 30 3.1.4 Historical Water Quality Monitoring ............................................................................. 31 3.2 CURRENT WATER QUALITY COMPARED TO WATER QUALITY OBJECTIVES ................. 33 3.3 WATER QUALITY TRENDS ..................................................................................................... 35 3.3.1 Nutrient trends ............................................................................................................. 35 3.3.2 Physical-chemical trends............................................................................................. 39 3.4 WHATS HAPPENING IN THE CATCHMENT REGARDING DETERIORATING WATER QUALITY................................................................................................................................... 48 Burrum Catchment Water Quality Improvement Plan - iii - 3.4.1 Water Quality ............................................................................................................... 48 3.4.2 Riparian Areas ............................................................................................................. 49 3.5 FUTURE WATER QUALITY MONITORING............................................................................. 50 3.5.1 Recommendations Burrum River Catchment water quality monitoring....................... 50 3.5.2 Water quality “Report Card” program .......................................................................... 51 3.5.3 Burrum River event monitoring program ..................................................................... 53 3.5.4 Recreational health monitoring program ..................................................................... 53 4.0 CHAPTER 4: CURRENT POLLUTION SOURCE / MANAGEMENT ISSUES .................................. 56 4.1 CURRENT POLLUTANT SOURCES........................................................................................ 57 4.1.1 Current Pollutant Estimates ......................................................................................... 57 4.1.2 Land Use...................................................................................................................... 58 4.1.3 Salinity Hazard............................................................................................................. 60 4.1.4 Acid Sulphate Soils...................................................................................................... 62 4.1.5 Sediment Delivery to Rivers ........................................................................................ 64 4.2 MANAGEMENT ISSUES .......................................................................................................... 66 4.2.1 Point Source Pollution ................................................................................................. 66 4.2.2 Diffuse Source Pollution .............................................................................................. 66 4.2.3 Monitoring .................................................................................................................... 72 4.2.4 Management Considerations......................................................................................