Diep Estuary Management Plan 2019
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ENERGY, ENVIRONMENT & SPATIAL PLANNING ENVIRONMENTAL RESOURCE MANAGEMENT Koos Retief Biodiversity Area Manager: Milnerton T: 021 444 0315 E: [email protected] D I E P R I V E R E S T U A R I N E M A N A G E M E N T P L A N 2016 CITY OF CAPE TOWN - DIEP RIVER ESTUARY MANAGEMENT PLAN, 2016 1 ACKNOWLEDGEMENTS The 2008 edition of this plan was completed under the auspices of Peak Practice. The proposals made therein were based on a series of discussions and workshops involving numerous individuals and organizations from relevant government agencies, to research institutions, non-governmental organizations and representatives of the local resident’s associations. The proposals in the 2011 edition of the plan have similarly involved many stakeholders through bilateral discussions and participation in the meetings of the EMP Forum (Rietvlei Management Working Group). The active and enthusiastic participation in the process augured well for the successful implementation of this plan and the rehabilitation of the estuary. The Coastal & Environmental Consulting Team, consisting of Lynn Jackson (CEC: Project Manager), Julian Conrad (GEOSS) and Marilie Carstens (GEOSS), expressed their appreciation to everyone who contributed. The 2016 update of this plan was required to align the plan to the National Estuarine Management Protocol. The establishment of the Table Bay Nature Reserve’s Protected Area Advisory Committee in 2015 has replaced the Rietvlei Management Working Group. This Advisory Committee continues to fulfil the role of the Estuary Advisory Forum. The 2016 update was done by: • Koos Retief (City of Cape Town Biodiversity Area Manager); • Landi Louw (City of Cape Town Site Manager); and • Candice Haskins (City of Cape Town Catchment, Stormwater and River Management Branch). Further assistance was provided by Catherine Meyer, Tandi Breetzke and Gerard van Weele of Royal HaskoningDHV under the auspices of the Western Cape Department of Environmental Affairs and Development Planning’s (DEADP) overall Estuarine Management Framework and Implementation Strategy project. Officials running the project include Marlene Laros, Zain Jumat and Nyanisa Tshaya of the Biodiversity and Coastal Management Directorate as well as Pierre de Villiers of CapeNature. CITY OF CAPE TOWN - DIEP RIVER ESTUARY MANAGEMENT PLAN, 2016 i Table Bay Nature Reserve | Tafelbaai-natuurreservaat | ULondolozo lweNdalo lase-Table Bay TABLE OF CONTENTS 1 DOCUMENT USE ........................................................................................................................................................ 1 2 EXECUTIVE SUMMARY .............................................................................................................................................. 2 3 INTRODUCTION ......................................................................................................................................................... 7 3.1 The management of estuaries in South Africa ................................................................................................ 7 3.2 The management of the Diep Estuary .............................................................................................................. 8 3.3 The Diep River Estuary Management Plan and Action Plan ...................................................................... 11 4 EXECUTIVE SUMMARY OF THE SITUATION ASSESSMENT FOR THE DIEP RIVER ESTUARY, 2008........................... 12 5 VISION AND KEY OBJECTIVES ............................................................................................................................... 15 6 MANAGEMENT OBJECTIVES .................................................................................................................................... 1 6.1 Long-term management objectives ................................................................................................................. 1 6.2 Management objectives for Action Plan: 2016 – 2020 .................................................................................. 1 6.2.1 Land-use and Infrastructure Development ............................................................................................. 1 6.2.2 Water Quantity and Quality ...................................................................................................................... 1 6.2.3 Conservation and sustainable use ........................................................................................................... 9 7 ZONATION IN THE TABLE BAY NATURE RESERVE ................................................................................................... 11 7.1 City of Cape Town Guidelines .......................................................................................................................... 11 7.2 Visitor Use Zones in the Table Bay Nature Reserve ....................................................................................... 13 7.2.1 Conservation zones .................................................................................................................................. 13 7.2.2 Low Intensity Use Areas ............................................................................................................................ 13 7.2.3 High Intensity Use Areas ........................................................................................................................... 13 8 MANAGEMENT STRATEGIES ................................................................................................................................... 14 8.1 Management of water quantity and quality ................................................................................................ 14 8.1.1 Water quantity .......................................................................................................................................... 14 8.1.2 Water quality ............................................................................................................................................. 19 8.1.3 Sediment quantity and quality ................................................................................................................ 24 8.1.4 Monitoring .................................................................................................................................................. 25 8.2 Conservation, Planning and Sustainable Use ................................................................................................ 25 8.2.1 Legal status of the Reserve ...................................................................................................................... 25 8.2.2 Urban development and planning ........................................................................................................ 25 8.2.3 Conservation and ecotourism development........................................................................................ 26 8.2.4 Biological research and monitoring ....................................................................................................... 26 8.2.5 Rehabilitation and habitat restoration ................................................................................................... 26 8.2.6 Invasive species ........................................................................................................................................ 27 8.2.7 Resource Utilisation ................................................................................................................................... 28 8.3 Education and awareness ................................................................................................................................ 29 9 RESOURCE REQUIREMENTS ..................................................................................................................................... 30 9.1 Staffing .................................................................................................................................................................. 30 9.2 Finances ................................................................................................................................................................ 30 10 ACTION PLAN ...................................................................................................................................................... 31 10.1 Revised List of Priority Actions............................................................................................................................ 31 10.2 Detailed Action Plan: 2016 – 2020.................................................................................................................... 32 CITY OF CAPE TOWN - DIEP RIVER ESTUARY MANAGEMENT PLAN, 2016 ii Table Bay Nature Reserve | Tafelbaai-natuurreservaat | ULondolozo lweNdalo lase-Table Bay 11 FRAMEWORK FOR IMPLEMENTATION ................................................................................................................ 33 12 AUDITING AND EVALUATION ............................................................................................................................. 34 13 RECOMMENDATIONS ......................................................................................................................................... 35 14 REFERENCES ........................................................................................................................................................