Water Supply Catchments

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					            OTWAYS eFORUM INFORMATION SHEET
         GREAT OTWAY NATIONAL PARK AND OTWAY FOREST PARK DRAFT
                           MANAGEMENT PLAN
    (Incorporating the DRAFT RECREATION AND TOURISM ACCESS PLAN and the DRAFT HERITAGE
                                         ACTION PLAN)


                         Water Supply Catchments




                                                     Geelong to Warrnambool. Many water storages,
Excerpt from the Draft Management                    diversion facilities and buffer areas are located in
Plan pp.68-70                                        the planning area. Wannon Region Water and
                                                     Barwon Water harvest water from catchments in
8.4 Designated Water Supply                          the planning area in accordance with the Water
                                                     Act 1989 (Vic.).
Catchment Areas
                                                     Wannon Region Water provides water to towns
Aims                                                 and domestic users to the north and west of the
•    Minimise impacts on water quality and yield     planning area between Lismore, Mortlake,
     in water supply catchment areas from            Warrnambool and Peterborough. Water for this
     recreation, extraction and management           region is drawn from a series of small weirs on
     activities.                                     Arkins Creek and is supplemented by water from
                                                     off-takes on the Gellibrand River.
•    As far as practicable, minimise the potential
     impacts of fire on water quality and yield.     Barwon Water supplies water for the Colac and
                                                     Geelong regions as well as towns along the Great
Basis                                                Ocean Road. These systems include:
The Otways are the source of water for many          •   Geelong region and coastal towns east of and
south-western Victorian communities, from                including Anglesea — collected from West
                                                                        Otways eForum Information Sheet: Water Supply Catchments

     Barwon Catchment and stored in West                                  Water production is generally compatible with
     Barwon Reservoir, and supplemented from                              conservation and recreation objectives; however
     the East Barwon River, Pennyroyal and                                water supply objectives are of particular
     Mathews Creek catchments. In future,                                 importance in the designated water supply
     Dewings Creek will also provide water into                           catchments (table 1).
     this system
                                                                          The designated water supply catchments in the
•    Colac region — West Gellibrand Reservoir                             Great Otway National Park are managed through
     and Olangolah Reservoir                                              formal agreements between DSE and the water
                                                                          corporations prepared under section 32L of the
•    Aireys Inlet — collected from the Painkalac                          National Parks Act. These areas are managed as a
     Creek catchment and stored in the Painkalac                          part of the park, acknowledging that the
     Reservoir                                                            paramount consideration is to protect the areas
•    Gellibrand — collected from Lardners Creek                           and the water resources and quality.
•    Apollo Bay and Skenes Creek — collected                              The designated catchment agreements prescribe
     from the West Barham catchment and stored                            requirements for certain actions and further
     in Marengo Service Basin                                             planning to be undertaken to protect the resource.
                                                                          They also provide that decisions or actions
•    Lorne — collected from the St Georges River                          undertaken in a designated water supply
     catchment and stored in Allen Reservoir.                             catchment by DSE, Parks Victoria and the water
Within the planning area there are a number of                            corporations do not adversely affect national park
potable water supply catchments, however there                            values or water resource values. There is
are five areas of particular importance declared as                       provision for excluding or restricting recreational
designated water supply catchments under the                              activities in the designated areas.
National Parks Act (figure 1). The protection of                          Existing recreation activities permitted in Great
designated water supply catchments will be given                          Otway National Park may be allowed in
paramount consideration in accordance with                                designated water supply catchments provided
section 32H of the National Parks Act. Designated                         water resource protection objectives are met.
water supply catchments include:                                          However, new developments such as walking
•    Arkins Creek Designated Water Supply                                 tracks will be avoided in designated water supply
     Catchment (1202 ha) — in Great Otway                                 catchments. Visitor contact with water storages is
     National Park near Lavers Hill.                                      illegal and can compromise water quality
                                                                          standards. Erosion associated with roads, stream
•    West Gellibrand and Olangolah Designated                             crossings and forest harvesting could cause
     Water Supply Catchments (2313 ha) — in                               turbidity and localised sedimentation. Wildfire
     Great Otway National Park above the West                             and fire management activities could seriously
     Gellibrand Dam and the Olangolah reservoirs.                         affect water quality and significantly reduce
•    West Barwon Designated Water Supply                                  stream flow (section 4.4).
     Catchment (4683 ha) — in Great Otway                                 The designated catchment agreements also require
     National Park above the West Barwon                                  that management plans, fire management plans
     Reservoir.                                                           and works programs be prepared for the
•    St Georges Designated Water Supply                                   designated water supply catchment areas.
     Catchment (1478 ha) — in Great Otway                                 Demand on water supply systems is increasing,
     National Park above Allen Reservoir.                                 and due to climatic change, the sustainable yield
                                                                          from existing systems is declining. Additional
•    Painkalac Creek Designated Water Supply
                                                                          water harvesting from the parks could further
     Catchment (3489 ha) — in Great Otway
                                                                          reduce stream flows, impacting on important
     National Park above Painkalac Reservoir.
                                                                          biodiversity values (sections 4.5, 4.6). Additional
VEAC made specific recommendations in relation                            water cannot be extracted from these systems
to designated water supply catchments, and these                          without a thorough assessment of environmental
were largely accepted by the government (VEAC                             impacts, in accordance with the Water Act and
2004; Government of Victoria 2005). Several                               other State and Commonwealth legislation.
areas previously owned or managed by water                                Barwon Water and Wannon Region Water are
authorities are now included in the parks.                                investigating a series of future water supply
                                                                          options, including educating users to reduce
                                                                          demand.

This document contains excerpts from Great Otway National Park and Otway Forest Park Draft Management Plan (Parks Victoria and DSE 2007) for
use in Otways eForums only (19/05/2008 – 25/05/2008).                                                                                      2
                                                                        Otways eForum Information Sheet: Water Supply Catchments

Strategies for management of designated water
supply catchments
•    Park management authorities will work in
     partnership with water corporations to ensure
     that water quality and yield are not
     compromised by other park activities, and that
     natural and cultural values are not
     compromised by water supply activities.
Proposed additional strategies for management
of designated water supply catchments
•    Designated Catchment Proposal 1 – Unless
     alternative arrangements are agreed by both
     parties, management plans prepared for the
     designated water supply catchments will be in
     accordance with the approved management
     plan for Great Otway National Park and
     Otway Forest Park.
•    Designated Catchment Proposal 2 – Unless
     alternative arrangements are agreed by both
     parties, fire management plans prepared for
     the designated water supply catchment areas
     will be in accordance with approved fire
     management plans which apply to the Great
     Otway National Park and Otway Forest Park.
Actions
•    In conjunction with Barwon Water and
     Wannon Water, implement the agreements
     prepared under section 32L of the National
     Parks Act for the management of designated
     water supply catchment areas in the Great
     Otway National Park. Review the agreements
     as appropriate.
•    Work with water corporations to assist in the
     preparation of designated water supply
     catchment management plans under the terms
     of the agreements.
•    Prepare works programs as required by the
     water agreements.
•    Prepare a fire protection plan for the
     designated water supply catchments.




This document contains excerpts from Great Otway National Park and Otway Forest Park Draft Management Plan (Parks Victoria and DSE 2007) for
use in Otways eForums only (19/05/2008 – 25/05/2008).                                                                                      3

				
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Description: Water Supply Catchments