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LOCAL ENVIRONMENTAL STUDY
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DUNGOG SHIRE COUNCIL AREA
December, 2001 Local Environmental Study - Dungog Shire Council
For many years, this Shire has been struggling with inadequate planning regulations that have been overtaken by increased development pressures and legislation. This situation has created difficulties for Council and the community, and there is an urgent need for a new Shire Wide Local Environment Plan (LEP) to control development in this Shire for many years to come.
Negotiations with the NSW Department of Urban Affairs and Planning endorsed Council intentions to produce an Issues Paper and a Local Environment Study before developing a Draft LEP. To begin this process, rural planning workshops were held throughout the Shire to seek input from the community before producing the Issues Paper, which was widely circulated.
This Draft Local Environmental Study, which has been compiled by Council Staff and Consultants, is an extensive analysis of existing information regarding natural resources, land use patterns and development pressures within the Shire. It will be placed on exhibition for public cormnent and will be followed up by another round of public workshops.
The Issues Paper and the Local Environment Study will assist Council in forming the basis for a Draft LEP, which will also be subject to a process of public consultation. Council is seeking the maximum community participation in this process and welcomes your input.
S.T.Low AM MAYOR
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Acknowledgements
The Dungog Local Environmental Study has been prepared by Dungog Shire Council and provides clear links to its 2000 State of the Environment Report. Council extends its appreciation to the many community members and Government Departments, for their co- operation and input into the workshops and the provision of data and information, as well as to Hunter Development Brokerage Pty Ltd (Kerry Nichols, Monica Gibson and Jennifer Nichols) for their valued work. All mapping has been produced from information supplied by Dungog Shire Council and Government Departments. Jt& I anager - Planning DUNGOG SHIRE COUNCII 14th December, 2001
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1.0 INTRODUCTION ...... 13
1.1 Location and Description...... 14
1.2 History ...... 15
1.2.1 Indigenous History...... 15 1.2.2 Settlement History ...... 16 1.2.2.1 Dungog ...... 16 1.2.2.2 Clarence Town ...... 17 1.2.2.3 Paterson ...... 18 1.2.2.4 Gresford ...... 18 1.2.2.5 Vacy...... 19 1.2.2.6 Martins Creek ...... 20 1.2.2.7 Gostwyck...... 20
2.0 STUDY OBJECTIVES ...... 21
3.0 EXISTING ENVIRONMENT ...... 22
3.1. Climate...... 22 3.1.1. Temperature ...... 22 3.1.2. Rainfall and Evaporation...... 22 3.1.3. Wind...... 24 3.1.4. Severe Weather Conditions ...... 24
3.2. Topography...... 25
3.3. Geology...... 26 3.3.1. General Geology...... 26 3.3.2. Mineral Resources ...... 26 3.3.2.1. Metallic Minerals ...... 27 3.3.2.2. Coal and Petroleum Resources ...... 27 3.3.2.3. Construction Materials...... 28 3.3.2.3.1. Construction Sand ...... 28 3.3.2.3.2. Hard Rock...... 29 3.3.2.4. Zeolifes ...... 29
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3.3.2.5. Sapphires ...... 29 3.3.2.6. Limestone ...... 30
3.4. Soils ...... 30
3.5. Hydrology ...... 31 3.5.1. Water Quality...... 33 3.5.1.1. Williams River...... 33 3.5.1.2. Allyn River ...... 35 3.5.1.3. Paterson River ...... 35 3.5.2. Water Usage...... 36
3.5.2.1. Potable Water Supply...... 37 3.5.2.2. Agricultural Water Usage...... 39 3.5.2.3. Recreational Usage ...... 40 3.5.2.4. Environmental Flows ...... 40 3.5.3. Groundwater Resources ...... 41
3.6. Land Usage ...... 42 3.6.1. Agricultural Land Suitability ...... 44 3.6.2. Riparian Quality ...... 46. 3.6.3. Existing Land Zonings ...... 47
3.7. Environment Protection Areas...... 47 3.7.1. Protected Wetlands ...... 48 3.7.2. Water Catchment Areas ...... 48 3.7.3. State Environmental Planning Policy No. 44- Koala Habitat ...... 49 3.7.4. National Parks, State Forests and Reserves...... 50
3.8. Flora...... 51 3.8.1. Riparian Flora ...... 54 3.8.2. Noxious Flora...... 56
3.9. Fauna...... 57 3.9.1. Threatened Fauna ...... 57 3.9.2. Introduced Fauna...... 59
3.10. Atmospheric Environment ...... 59 3.10.1. Noise ...... 59 3.10.2. Odour ...... 61
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3.10.3. Dust...... 61 3.10.4. Air Quality...... 61
3.11. Economic Environment...... 62 3.11.1. Agricultural Economy ...... 63 3.11.1.1. Dairy Industry...... 66 3.11.1.2. Poultry Industry ...... 67 3.11.1.3. Beef Industry ...... 68 3.11.2. Industrial Development ...... 69 3.11.3. Tourism Industry ...... 70 3.11.3.1. Activities and attractions ...... 71 3.11.3.2. Accommodation ...... 72
3.12. Heritage...... 73 3.12.1. European Heritage...... 73 3.12.2. Aboriginal Heritage...... 74
4.0 ENVIRONMENTAL HAZARDS...... 75
4.1. Land Degradation...... 75 4.1.1. Soil Erosion...... 75 4.1.2. Soil Salinity ...... 77 4.1.3. Land Stability ...... 77 4.1.4. Land Contamination...... 78 4.1.5. Acid Sulfate Soils...... 78
4.2. Flooding ...... 80
4.3. Buhfl,- ...... 81
4.4. Waste Disposal...... 82
4.5. Loss of Biodiversity ...... 84
5.0 DEMOGRApHICS ...... 86
5.1. Population ...... 86
5.2. Age Structure ...... 89
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5.3. Household and Family Structure ...... 91 5.3.1. Vehicle Summary...... 92
5.4. Workforce Structure ...... 92 5.4.1. Education structure...... 95
5.5. Social Structure...... 96
6.0 LAND USE DEMAND ...... 98
6.1. Real Estate Trends...... 98
6.2. Demand for land within the towns and villages of Dungog Shire ...... 98
6.3. Demand for Rural Residential land...... 99
6.4. Industrial land...... 100
6.5. Commercial/and ...... 101
7.0 INFRASTRUCTURE ...... 102
7.1. Water Supply...... 102 7.1.1. Tillegra Dam proposal...... 103
7.2. Storm water Infrastructure...... 104
7.3. Sewerage Infrastructure...... 105 7.3.1. On-Site Sewerage Management ...... 105
7.4. Rail Infrastructure...... 107
7.5. Road Network ...... 107
7.6. Recreational Facilities ...... 109
7.7. Community Facilities ...... 11-i 7.7.1. Disabled Facilities...... 112
7.8. Health and Aged Care Facilities...... 113
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8.0 LEGISLATIVE FRAMEWORK ...... 114
8.1. Environmental Planning and Assessment Act, 1979 ...... 114 8.1.1. State Environmental Planning Policies ...... 115
8.2. Regional Environmental Plans...... 115 8.2.1. Hunter Regional Environmental Plan...... 115 8.2.2. Hunter Regional Environmental Plan (Heritage) ...... 116 8.2.3. Williams River Catchment Regional Environmental Plan ...... 116
8.3. Dungog Local Environmental Plan, 1990...... 118 8.3.1. Dungog Council Development Control Plans ...... 118
8.4. Dungog Council Strategic Planning Documents...... 120
8.5. Proposed Changes to the Environmental Planning and Assessment Act, 1979 120
9.0 PUBLIC CONSULTATION ...... 122
9.1. Dungog Local Environmental Study Workshops...... 122
10.0 FINDINGS ...... 124
11.0 RURAL SETTLEMENT STRATEGY ...... 132
11.1. introduction ...... 132 11.1.1. Aims Of The Strategies ...... 133 11.1.2. Community Involvement...... 133
11.2. Supply And Demand...... 134 11.2.1. Adjoining Council Areas ...... 135 11.2.2. Type of Land ...... 136
11.3. Issues Summaty ...... 137 11.3.1. Environmental Issues ...... 137 11.3.2. Social Issues ...... 138 11.3.3. Economic Issues For Further Development...... 140 11.3.4. Road Infrastructures - Roads and Transports...... 140
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11.3.5. InfrastructureCosts ...... 141 11.3.6. Agriculture ...... 142
11.4. Strategy...... 142
12.0 REFERENCES...... 145
Appendix A Wind Roses Appendix B Quarries in Dungog Shire Appendix C Williams River Catchment Regional Planning Strategy- Environmental Planning BMP
Appendix D Williams River Catchment Regional Planning Strategy- Land Use Action Implementation Appendix E Water Quality Testing Results Appendix F Declared Noxious Weeds for Dungog Shire Council Appendix G Current Heritage Items Appendix H Revised Heritage Items Appendix I State Environmental Planning Policies Applicable to Dungog Shire Appendix J Issues Paper; Dungog Local Environmental Study
Plan1 Shire Location ...... 14
Plan 2 Mineral Resources and Exploration Titles...... 27
Plan3 Paterson Water Supply...... 38
Plan 4 Clarence Town Water Supply...... 38
Plan 5 Gresford/ East Gresford Water Supply ...... 38
Plan 6 Dungog Service Supply...... 38
Plan 7 Chichester Catchment Area...... 48
Plan 8 Williams River Catchment Area ...... 48
Plan 9 State Forests and National Parks...... 51
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Plan 10 Clarence Town Acid Sulfate Soils ...... 79
Plan 11 Potential Acid Sulfate Soils...... 79
Plan 12 Flooding in the Williams River...... 81
Plan13 Bushfjre Potential ...... 81
Plan 14 Tillegra Dam Proposal Site...... 103
Plan 15 Proposed Clarence Town Sewerage Scheme ...... 105
Figure 1. Average daily temperature, Dungog Shire 22 Figure 2. Monthly rainfall- Dungog Shire 23 Figure 3. Mean daily evaporation Dungog Shire, Tocal College 24 Figure 4. Age Pyramid for Dungog LGA and NSW, 1996 89
Table 1. Water extraction licensing, Dungog Shire 39 Table 2. State Forests, Dungog Shire 50 Table 3. Vegetation cover, Dungog Shire 53 Table 4. Threatened flora species, Dungog Shire 54 Table 5. Threatened fauna species, Dungog Shire 57 Table 6. Agricultural statistics, Dungog Shire, 1990- 1996 64 Table 7. Tourism statistics, Dungog Shire, 1994-1995 70 Table 8. Aboriginal sites within the Dungog Shire 74 Table 9. Number of bushflres by type, Dungog Shire 1999-2000 82 Table 10. Area affected by bushfire by type of land, Dungog Shire 1999-2000 82 Table 11. Dungog projected population 1996- 2011 86 Table 12. Population change, Dungog Shire 1995-1 996 86 Table 13. Population change, Hunter Region 1993-1 999 87 Table 14. Population distribution, Dungog Shire planning districts, 1971 -1 996 87 Table 15. Population age structure, planning districts, 1991 90 Table 16. Population age structure, planning districts, 1996 90 Table 17. Population age structure change, planning districts, 1991-1996 91 Table 18. Vehicle registrations, Dungog Shire, 1997 and 1999 92 Table 19. Unemployment rates, Dungog Shire and NSW total, 1996 93 Table 20. Employment by occupation, Dungog Shire and NSW 94
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Table 21. Employment by industry, Dungog Shire
Table 22. Enrolment figures, Dungog Shire, 1996-2001 96 Table 23. Aborigines and Torres Strait Islanders, Dungog Shire, 1986-1996 97 Table 24. Drinking water supplied from Chichester Dam, 1997-2000 102 Table 25. AADT for main roads in Dungog Shire, 1984- 1998 109
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ANACRONyMS
AADT Annual Average Daily Traffic ABS Australian Bureau of Statistics AEP Annual Exceedance Probability AHD Australian Height Datum BMP Best Management Principles BREP Business Retention and Employment Program DA development application DCP development control plan DLWC NSW Department of Land and Water Conservation DUAP NSW Department of Urban Affairs and Planning EPA NSW Environment Protection Authority EPA Act Environmental Planning and Assessment Act 1979 ESD Ecologically Sustainable Development ha hectares HWC Hunter Water Corporation km kilometres LEP Local Environmental Plan LES Local Environmental Study LGA Local Government Area Ml megalitre NP National Park NPWS NSW National Parks and Wildlife Service PS Public School REP Regional Environmental Plan RTA NSW Roads and Traffic Authority SEPP State Environmental Planning Policy SoE State of the Environment Report TCM Total Catchment Management TSC Act Threatened Species Conservation Act 1997 tS/ cm micro Siemens per centimeter (at 25°C)
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1.0 INTRODUCTION
The Shire of Dungog is part of the Lower Hunter Sub-Region. It adjoins Great Lakes Shire to the east, Singleton Shire to the west, Scone Shire to the northwest, Gloucester Shire to the north and Port Stephens Shire and the City of Maitland to the south.
Dungog Local Government Area is 2,265.33km2 and extends from alluvial flats and undulating country in the south, to mountainous and rugged terrain in the north, where the Great Dividing Range, and the Barrington Tops border the LGA.
The Shire has two main rivers, the Williams on the east and the Paterson on the west. Both traverse the Shire in a general northwest to southeast direction. The Shire is mostly delineated to the east and west by the catchment limits of the Williams and Paterson Rivers. Other rivers having their catchment areas in the shire include the Allyn River in the west and Chichester and Wangat Rivers in the east.
Road access within the Shire is largely determined by topography with linkages to the New England Highway and the Pacific Highway through Gresford, Dungog and the Bucketts Way. The main North Coast rail line runs north- south through the Shire.
Approximately 45% of the Shire's area comprises forest and woodland with only 0.1% being urban land. Within the wooded areas of the Shire, 22% is State Forest or National Park property.
Dungog Shire is predominately an agricultural area. The Paterson and Allyn River valleys and the Clarence Town and Dungog Hills have been extensively cleared and are used for dairy farming along the lower reaches and for beef production in steeper areas. Forestry operations are concentrated to the north but are not as widespread throughout the Shire as they once were. Increasingly, rural residential and rural farmiets are encroaching into traditional grazing areas. Tourism as an alternative economic base to agriculture is increasing, with features such as the natural mountain topography and wilderness areas attracting many tourists.
Over recent years the Dungog Shire has experienced a steady increase in population in the southern part of the Shire. This is considered in part, to be due to its proximity to Newcastle and Maitland and also because of the quality and range of rural allotments available. The villages of Paterson and Clarence Town provide the focus for much of this recent growth, which is in part due to the availability of small rural lots. The supply of rural residential lots in
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these areas has been restricted by the need to investigate the overall impact of this type of development, before approving further subdivision or rezoning applications.
The demand for rural residential lifestyle lots has a significant impact on service provision and the use of resources. Rural residential lots can use valuable agricultural land, reducing the amount of productive crop and grazing land from the Shire. The residents of rural residential lots often expect a similar provision of services to the urban counterparts, using more water resources and creating the need for sewerage servicing at high cost to Council.
The Dungog Local Environmental Plan has served the Shire since 1990 and is in urgent need of review. The following document examines the existing environment, development trends and pressures, which will underpin a review of the local planning instrument.
Future choices and directions can be best examined with a full understanding of the present position and an awareness of the opportunities and constraints. Through this informed decision-making process, a more achievable and ultimately more beneficial and prosperous sustainable future can be planned.
1.1 Location and Description
The Shire of Dungog is part of the Hunter Region, located in central east New South Wales. Within the Hunter Region, Dungog Shire classed within Lower Hunter Sub-
Region. The Shire covers an area of 2,265 km2 and adjoins the Local Government Areas of Great Lakes Shire to the east, Singleton Shire to the west, Scone Shire to the northwest, Gloucester Shire to the north and Port Stephen Shire and the City of
Maitland to the south. The location of the shire and its neighbours are detailed in Plan 1.
The administration centre for the Shire is located in Dungog, which is approximately 50km by road from Maitland, 80km from Newcastle and 230km from Sydney.
For planning purposes, the Local Government Area (LGA) is divided into two planning districts created by the catchments of the Paterson and Williams Rivers. Previously there were four planning districts centred on the major villages of Dungog, Clarence Town, Gresford and Paterson. These areas were reduced in number with the advent of the Section 94 Contributions Plan 2001.
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Each planning district includes a town and villages together with the surrounding rural localities, which look to the town centre for basic services. It is notable that all settlements are located in the southern half of the LGA. In the north of the shire settlements are sparse, as the terrain becomes mountainous. Many areas in the north are therefore comparatively isolated. Throughout the LGA there are numerous farming communities distributed between the flat fertile plains and the rugged mountains. The location of the two planning districts and major villages and towns in the shire are shown in Plan 1.
1.2 History
1.2.1 Indigenous Histoty
Aboriginal people occupied Dungog Shire about 40,000 years before European settlement. Historians indicate that at the time of white settlement Aboriginal people were present in 'relatively large' numbers in the Paterson and Williams River valleys. Dungog is an aboriginal name, meaning place of thinly wooded hills.
It is believed that the people inhabiting the Paterson and Williams River valleys belonged to the Gringai Tribe. The Gringai people formed part of the Wanaruah Tribe, who were the original inhabitants of the Allyn River district near Dungog.
The earliest anecdotal reports of the Shire's indigenous population date from 1801 and are supplied by the early explorers on the rivers. Subsequent observations of settlers referring to indigenous hunting practices, customs and corrobores can be found as late as the 1840's. The Gringai people traditionally migrated to Barrington Tops in the summertime. It is apparent that close habitation and bartering relationships existed between the indigenous people and white settlers, however, European diseases, punitive action and the effects of dispossession led to a rapid breakdown of the indigenous society. The influx of white people had a devastating effect on the local indigenous population and the last of the Gringai Tribe died in 1905 (Dungog Shire Council, Community Profile, 1999).
Aboriginal history for the Dungog area is generally sparse and incomplete.
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Catchment Boundary SCALE 1 :250000 Gloucester 3000 0 3000 6000 9000 12000 Metres
Maps prepared by Hunter Development Brokerage Pty. Ltd. Maps compiled from information supplied by Dungog Shire Council
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1.2.2 Settlement Histoty
Settlement of the Shire occurred around the four main towns of Dungog, Gresford, Paterson and Clarence Town and is examined as follows.
1.2.2.1 Dungog
European settlement of the Dungog area occurred in the early 1800's. The first white men in the area were thought to be searching for lost stock. Timber getters attracted by the magnificent cedar trees in the area's hills followed.
The settlement, which grew up on the banks of the Williams River, was originally called Upper Williams and was situated 14 miles upstream from Clarence Town, which was the head of navigation.
The first land grant in the Dungog area was to Mr. Mackay in 1824. A parcel of land was granted to Mr. James Dowling, north of Dungog in 1828. This was followed by grants to the Hook's, Chapman's, Wyndier's and Verge's. In 1934 Captain Thomas Cook JP was invested as magistrate and suggested that the village be given a distinctive name: Dungog.
After a short period of white settlement, various crops were grown in the area including wheat, corn and tobacco and the Dungog district became well known for its timber and dairy products. This reflected the Hunter Valley's broad trend toward livestock and fodder production in the late 1800's to the early 1900's. Before 1888 Dungog was a very poor settlement. The Census of 1857 indicated that Dungog village had 25 houses and a population of 126 people. By 1861 the population had grown to 458 people.
Dungog's prosperity increased and the Dungog Coop Dairy Company was formed in 1905. By the year 1909, the Dungog area was serviced with a telephone network. Electricity followed in 1917. The railway reached Dungog in 1911.
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During the late 1920's depression period, many people worked on roads and other civic projects. A high level of road development and public infrastructure works resulted and the Chichester Dam was completed in 1923. In 1958, the Shire of Dungog was formed and the municipality amalgamated with Wallarobba Shire. Since then, Dungog has continued as the major service centre for the LGA and is the base for a large number of local government area-wide services.
1.2.2.2 Clarence Town
The area which became known, as Clarence Town was first settled by white settlers following the visit of Lieutenant Colonel Paterson, who traveled up the river now known as the Williams from its junction with the Hunter River at Raymond Terrance in 1801. The area was originally known as Erringhi however the name was changed to Clarence Town in 1826.
The first settlement was around the area where the Depiford Shipyard was established. The Clarence Town ship building industry quickly began to grow as timber in the area was plentiful and of good quality. The first ocean-going steamship to be built in Australia was built at Clarence Town. This was the William IV (Dungog Shire Council, Community Profile, 1999).
Even though life centred on the river in many ways, the undulating country and abundance of flat land along the river proved ideal for dairy farming, fodder production and grazing. The earliest economic activity in the Clarence Town area was cedar cutting, performed with convict labour from 1801. In 1826, a tobacco factory and tannery were operating and by early 1830 the boat-building yard had commenced operation. Clarence Town post office opened in 1838 and in 1839 the town had 18 houses and a population of 93 people. By 1863 the village boasted a population of 300.
The importance of Clarence Town as a transport centre declined once the railway was established in the early 1900's. Dairy and
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livestock production became the main economic activities and through the 1900's Clarence Town retained this focus boosted by timber cutting in the surrounding forests.
1.2.2.3 Paterson
In 1801, Lieutenant Colonel William Paterson first surveyed the area along what is now known as the Paterson River. First settlers to the area were cedar cutters, who started settlement along the Paterson in 1812. The settlement was built and then mainly inhabited by convicts. In 1821, free settlers moved into the area and paved the way for further development. Paterson soon became a port and service centre.
Although Paterson was the Hunter Region's third town site to be surveyed (after Newcastle and Maitland) it was not proclaimed until 1823. Paterson developed rapidly due to its importance as a port. Produce was transported from the fertile Paterson Valley to Newcastle, mostly in form of citrus fruits, tobacco, grains, grapes and wine.
Shipbuilding became prominent with two yards being established, however, river trade declined in the 1850's as the road to Maitland was improved. The town continued to develop in spite of this, outgrowing it original surveyed site. Timber mills were established in the Paterson area in the 1870's. In the 1890's the building of the North Coast Railway further reduced the importance of the river trade and even though the railway eventually linked Paterson with Dungog, it brought few benefits to the town. Throughout the 1900's, agriculture became the major economic activity in the Paterson area. In 1914, the nearby village of Martins Creek grew with the advent of the railway and the opening of the blue metal quarry nearby.
1.2.2.4 Gresford
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It is likely that Gresford came into being as a result of further exploration along the Paterson River upstream from where the township of Paterson had been established.
Early settlers to receive large land grants in the area included such well-known names as Boydell, Townsend and Park.
Some of the early crops were wheat, corn, turnips, tobacco, grapes and other fruit. A jam factory was established in Trevallyn. The layouts of the towns of Gresford and East Gresford have been substantially preserved and little development has occurred outside their original boundaries.
1.2.2.5 Vacy
Vacy became a private town when the Cory family estate was constructed in 1824. It existed in this fashion until its subdivision and sale in 1927.
Vacy was a convement stop- over point for travelers between Gresford and Paterson and an Inn operated in 1859. The Coiy family established the first church, school and post office.
The population of Vacy continued to expand from 1850 - 1900. During this time a blacksmith, bakery, butcher, general store, cattle sale yard, slaughter yard, tobacco factory, arrowroot factory and creamery was established.
The town's only hotel was established on the old road leading to the low-level bridge on the Gresford side, prior to the new bridge being constructed in 1898. In 1927 the town was sold in 50 lots, including homes, shops, the hotel, dairy farms and orchards.
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1.2.2.6 Martins Creek
The village of Martins Creek was named after Edward Martin who settled on the Paterson River near its junction with Martins Creek in 1851. Other settlers, who soon filled the surrounding land, followed Martin. Most settlers were on smaller allotments and were of modest means. Settlers engaged in a variety of agricultural pursuits. The railway passed through Martins Creek in 1908, considerably altering the fortunes of the village. State and private acite (blue metal) quarries opened in 1913 to provide ballast for the railway and later for roads and other construction. At their peak of production the quarry employed 100 men.
1.2.2.7 Gostwyck
The locality now known as Gostwyck was one of the earliest estate developments in the Paterson District, taken up by Edward Gostwyck Cory in 1823. Cory established vineyards, tobacco, wheat plantations, a flourmill and bloodstock on the property, with the river being used to transport grains and flour to Raymond Terrace and Morpeth. A timber mill replaced the flourmill in the late 1820's and the estate was subdivided in 1902, after which a butter and ice cream factory were established. By 1927, after the factory's closure, Gostwyck vanished from road maps.
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20 STUDY OBJECTIVES
The objectives of this study are to prepare a document based on available information to: -
Enable the assessment of physical, social and economic characteristics of urban and rural environments of the Shire;
Assist Council to formulate appropriate aim, objectives and strategies for a Draft Local Environmental Plan;
Identify areas for further investigation to service residential and rural residential demand that reduces conflict between adjoining land uses; and + Provide a reference document for use by Council and others.
The study will form the basis for the preparation of the Draft Local Environmental Plan to guide future development of the Shire.
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3.0 EXISTING ENVIRONMENT
3.1. Climate
3.1.1. Temperature
Due to the range of altitudes, climates and topographies within the Shire, an average shire-wide set of data cannot be produced to accurately show the daily temperatures within the Shire.
Instead, mean daily maximum and minimum temperatures for Lostock Dam (near Gresford) and Tocal Agricultural College is shown in Figure 1.
Figure 1. Average daily temperature, Dungog Shire Generally, Dungog Shire has the highest maximum daily temperatures in December and January, with the coldest daily minimum in July and August.
3.1.2. Rainfall and Evaporation
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Rainfall in the Shire is variable, with an annual average rainfall of 1500mm being recorded in the northern portions of the Barrington Tops. At Lostock Dam, the average annual precipitation is 961.4mm. At Tocal, annual rainfall is 91 7.5mm. Generally the lowest annual rainfall occurs in the central valley around Dungog where the influences of the coast and the highlands are absent (Williams River Total Catchment Management Study, 1996).
Figure 2. Monthly rainfall- Dungog Shire
There is no marked seasonal rainfall pattern in the Shire although maximum falls occur in summer with a secondary peak in June as detailed in Figure 2. Winter rains are produced by temperate weather patterns while summer and autumn rains are the result of tropical low- pressure cells moving south. Storms are most likely to occur on summer afternoons, thus increasing the summer rainfall and the intensity of this precipitation (Williams River TOM Study- Water Quality, 1996).
Evaporation recorded at Tocal Agricultural College shows an average daily pan evaporation of 4.4mm, with the highest evaporation occurring between November- February and the lowest evaporation between May- August.
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E 8 57 >E 7 6 . '-4
c1 > w J F M A M J JASON D Month
Figure 3. Mean daily evaporation Dungog Shire, Tocal College.
3.1.3. Wind
Records for Tocal Agricultural College indicate that the area experiences calm breezes in the morning from variable directions. In the afternoon the winds are much stronger and come from the southeast, except in winter when the winds are more gentle and generally come from the west.
The shire infrequently experiences strong winds of 40-50 km/h (average 23.5 days/ yr.) or gales of 630 75 km/h (average 4.8 days! yr.). These weather conditions are most likely to occur between June and September.
Wind roses showing the average wind speed and direction are included in Appendix A.
3.1.4. Severe Weather Conditions
Snow and sleet annually affect a small area of the Shire. These forms of precipitation are limited to high altitude areas in the Barrington Tops National Park and surrounds, in areas above 915 metres AHO. The amount of precipitation in the form of snow is negligible in these areas due to the high rainfall experienced.
The definition of drought depends upon individual perception and the local environment. A drought exists when rainfall is insufficient for normal farming practices to be conducted (NSW Agriculture, 2001).
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Droughts in the Dungog area generally occur for periods of several years. The most severe droughts have occurred in 1980/91, 1965/66 and 1940/42, with other significant dry spells in 1932, 1936, 1983 and 1987 (Williams River Total Catchmcnt Managcmcnt Study, 1993).
3.2. Topography
The Dungog LGA extends from alluvial flats and undulating country in the south to mountainous and rugged terrain in the north where it is bordered by the Great Dividing Range via the Barrington Top Ranges and escarpment.
Three river valleys; the Williams, Allyn and Paterson control the topography of the Shire. The Williams and Paterson Rivers are major tributaries of the Hunter River. In its upper reaches the Williams River splits into the Upper Williams, the Chichester and the Wangat Rivers, while the Paterson River meets the Allyn River at the village of Vacy.
The land rises from rolling to hilly country at an altitude of about 1OmAHD in the south, to the rugged Barrington Tops at an altitude of about 1 ,500m in the north. The western border of the Shire is defined by the Mount Royal Range, which runs south from the Barrington Tops and the Moonibung Range in the far south. To the east, the Black Bulga Range and Iron Stone Mountain define the border.
An extensive spur line to the Barrington Tops, the Williams and the Wallarobba Ranges form a major barrier between the Williams and Paterson River valleys. The Williams River widens more than the Paterson River in its lower reaches into a broad valley stretching from Dungog to Clarence Town.
HDB\\Master\c\Myoocuments\oungog Local Environmental Plan 25 Local Environmental Study - Dungog Shire Council
3.3. Geology
3.3.1. General Geology
Dungog Council area falls within what has been classed as the northeastern mountain sub-region of the Hunter Valley. The geology of the Dungog area is extremely complex mainly due to the structural complexity of the area (Henderson, 2000).
The northeastern mountains consist of tertiary basalt with some inter-bedding sediments overlaying undifferentiated carboniferous sediments which consists predominately of silt stone, sandstone and chert, interspersed with tuffs, conglomerate and limestone. The rocks are strongly folded and faults are frequent. Much of the country has extremely thin, stony soils (Dungog Shire Council, State of the Environment Report 2000).
The tertiary basalts are now restricted to the Barrington Tops area, as erosion has reduced the capping which was thought to have once spread across the northern half of the Hunter Valley area. Some of the basalt erosion was drained into the Williams and Chichester Rivers and deposited as riverbed sediments (Roberts eta!, 1991).
No areas within the Dungog Shire are within a proclaimed Mine Subsidence District, as confirmed by the Mine Subsidence Board.
3.3.2. Mineral Resources
Dungog LGA has a relatively diverse assemblage of mineral occurrences, including gold, zeolites, limestone and sapphires. It also has a significant resource of hard rock aggregate at Martins Creek and extensive occurrences of rock, including the limestone occurrences that are suitable for use as unprocessed construction materials.
Dungog LGA appears to be devoid of coal or petroleum resources, and there is no known potential for gold and sapphire deposits of commercial significance. Although rocks in the area are known to contain zeolite, the commercial occurrences of this material in Dungog LGA have yet to be found.
H DB\\Master\c\Myoocumenfs\oungog Local Environmental Plan 26 Local Environmental Study - Dungog Shire Council
However, the promotion of fossicking for gold and sapphires as a tourist activity along streams in the northern part of Dungog LGA, towards the Barrington Tops National Park, should be considered.
Three petroleum exploration titles exist in the Dungog Shire. The locations of these are detailed on Plan 2. The exploration titles extend over a broad area, to allow for regional variation that may affect the investigation of the presence of any petroleum resources. Exploration titles have very limited effects on the land to which they apply. They generally do not restrict development.
Plan 2 also shows an area affected by section 117 directions under the Environmental Planning and Assessment Act 1979. The areas affected by the directions extend over the Martins Creek quarry and protects the mineral resources within the quarry from other land uses. The protection afforded by Section 117 of the EPA Act is required as some land uses may render the resource unviable to extract. These land uses include residential development (noise, traffic complaints), some agricultural activities or environment protection areas.
3.3.2.1. Metallic Minerals
Dungog LGA has moderate potential in the eastern half for small deposits of vein-hosted gold, which represent the southern portion of more extensive gold occurrences to the north. They occur along bedding planes between rock or as discordant veins located along prominent faults or shear zones. Minor amounts of silver in association with base metals have been reported at the Mt Nelson deposit. Much of the area of potential for small occurrences of gold is now in the Barrington Tops National Park, though there may be some opportunity for gold panning by visitors along streams in the area.
Reported occurrences of ironstone in the southeastern part of Dungog LGA have no known economic potential.
3.3.2.2. Coal and Petroleum Resources
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152 Local Environmental Study - Dungog Shire Council
Although the southern part of Dungog LGA is partly cover by petroleum exploration licences, the potential for petroleum as well as coal resources of commercial interest in Dungog LGA is considered to be negligible.
3.3.2.3. Construction Materials
The locations of construction minerals within the Dungog Shire are shown in Plan 2. Appendix B lists all known quarries in the Dungog Shire in 1995. Further research is required to establish if these quarries comply with current planning instruments. These quarries mostly operate to service the local market, providing road construction material or other gravels for local construction works.
3.3.2.3.1. Construction Sand
There is no recorded production of construction sand currently occurring in the area covered by Dungog LGA. Moderately large amounts of river sand of unknown suitability for construction purposes such as concrete manufacture and as fill material are associated with the major rivers draining the area. The potential of these rivers to supply gravel is unknown.
There may be some potential for the extraction of small amounts of sand from these locations, however there are large amounts of construction sand at Stockton Bight in Port Stephens and in nearby local government areas that would be closer to markets and have lower prices.
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3.3.2.3.2. Hard Rock
State Rail Authority operates the only hard rock quarry in Dungog LGA. At Martins Creek, almost 400,000 tonnes of ignimbrite rock of high strength and high durability has been extracted annually in recent years for use as railway ballast. Although reserves available to this quarry are unknown, sufficient quantities of rock appear to be available for at least five to ten years at current production rates. Large resources of the type of hard rock extracted at this quarry occur in this part of Dungog LGA.
Therefore, there is significant potential for the long-term extraction of hard rock in this area to remain viable.
3.3.2.4. Zeolites
Zeolites are crystalline hard hydrated alumino-silicates that can be used in agricultural applications and water treatment, owing to their unique mixture of properties that include cation exchange and the ability to absorb gases and water. Reconnaissance sampling of carboniferous ashfall tuffs in the area towards Clarence Town has confirmed their potential to host zeolite deposits, though commercial occurrences have yet to be found.
3.3.2.5. Sapphires
Good-quality sapphires have been found in alluvial deposits in the creeks draining Barrington Tops and Gloucester Tops. The southern part of these areas occurs in the Dungog LGA. The sapphires are generally only several millimeters across, which reduces the potential for large-scale mining. Though the Barrington Tops National Park covers much of the area of the potential, sapphire fossicking could be promoted as tourist activity.
HDB\\Master\c\MyDocuments\Duflgog Local Environmental Plan 29 Local Environmental Study - Dungog Shire Council
3.3.2.6. Limestone
Many deposits of limestone occur in the Dungog-Gloucester area. Limestone is used as an aggregate in construction and building and as a primary raw material in cement manufacture, agriculture, metal refining, quicklime production and in glass manufacture. In Dungog LGA, limestone deposits range in size from the large Bingleburra deposits to smaller occurrences of little commercial interest. One deposit, the Lewinsbrook Limestone Deposit, is a minor source of road base. The Bingleburra Limestone deposits contain about 12 million tonnes of limestone of variable quality. The large thickness of overburden, the thinly bedded nature of the limestone and the variable and generally impure nature of the limestone render it uneconomic at present, except for use perhaps as road base or as fill material.
3.4. Soils
The soils of the Dungog area are generally derived from their carboniferous sedimentary parent material. Throughout the area, the soils have a frequent occurrence of high-level acidity and low fertility. Soil landscapes in the mountainous and hilly areas generally tend to be highly erodible. There are several areas where the soils present a high level of limitation to regular cultivation, urban development and grazing. The Wangat soil landscape in the Clarence Town Hills, Gresford Hills and
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Barrington-Chichester Mountains is highly unsuitable for grazing, urban development and regular cultivation.
Mass movement of soil triggered by wet weather has been observed particularly on steep lands to the west of the Williams River catchment and to the east between Seaham and Bandon Grove. Erodible soils contribute to the turbidity of streams by adding sediments to the water. They are also not suitable for onsite effluent disposal, due to their relatively low permeability rates.
F5 Era dibility, high level acidity, low permeability and low fertility are common features of soil landscapes in the Shire.These features constrain grazing, urban development and regular cultivation.
3.5. Hydrology
There are two main water catchments in the Dungog Shire Area; the Williams River Catchment dominated by the Williams River and the Paterson/Allyn Catchment dominated by two rivers, the Paterson and the Allyn Rivers as detailed in Plan 1.
Rising in the Barrington Tops National Park and flowing south to meet the Hunter River estuary at Raymond Terrance, the Williams River together with its major tributary, the Chichester River, drains a catchment approximately 131,200 hectares in size. The Williams River catchment is one of the most studied catchments in NSW and there is an extensive planning framework in place. This catchment is the major source of drinkable water for the urban centers of the Lower Hunter, including Maitland, Cessnock, Newcastle, Lake Macquarie and part of Port Stephens. Water is supplied from Chichester Dam in the upper catchment and from Grahamstown Storage Reservoir (Williams River Catchment Regional Environmental Study, 1996).
Under the provisions of the Clean Waters Regulation 1972 administered by the Protection of the Environment Operations Act 1997, the Williams River is classified as Class P- Protected Waters. This restricts the wastes that can be discharged into the Williams River, limiting the level of physical and chemical pollutants.
The Shire of Dungog makes up a significant proportion of the Williams River Catchment. Total Catchment Management (TCM) is very significant to the residents of
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the Dungog Shire, with the Williams River TOM committee formed in 1990 as a subcommittee of the Hunter Oatchment Management Trust. Dungog Shire Oouncil continues to participate in the Williams River TOM Oommittee. The Williams River TOM Strategy and the Williams River Oatchmerit REP provide the principles, goals and objectives to guide the implementation of strategies and actions in the Williams River catchment.
The aims and objectives of the strategy are to:
Halt and reverse the decline in water quality in the Williams River catchment, Develop procedures for sustainable long-term management of the catchment, Develop policies and actions to better manage the impacts of existing development and land management practices, Establish principles to guide future development, 000rdinate programs and actions including community-based action, Oomplement the Williams River Catchment REP.
In order to implement the aims and objectives of the Williams River catchment regional planning strategy, the Best Management Principles should be complied with, to ensure the development of best practice notes for the Williams River catchment. The BMPs applicable to environmental planning, which are to be considered during the preparation of any local environmental plan and during assessment of a development application are reproduced in Appendix C.
Actions to implement the land use improvements for the Williams River catchment are detailed in Appendix D. These actions consider land use planning issues such as on- site effluent disposal, rural residential development, sediment and erosion control, and catchment-based planning.
The Paterson River, together with the Williams River, is a significant estuarine tributary of the Hunter River. Lostock Dam is situated on the Paterson River near the village ot Salisbury. Below Lostock Dam, the Paterson River is a major regulated river, until its confluence with the Hunter River (EPA, 2001).
Rivers are affected to some degree by land-use practices along the catchment. The impact of flooding on Dungog Shire forms a constraint to its future development.
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A proposed major water supply facility to service Newcastle and the Lower Hunter has been proposed for the Tillegra district, north of Dungog. This facility is unlikely to be constructed within the next thirty years, however land purchases by the Hunter Water Corporation are currently underway.
The proposed scheme calls for a major dam to be constructed on the Williams River about 5 kms upstream of its junction with the Chichester River. The dam site at Tillegra has been identified since at least the 1940s. However the need for the dam is dependent on the demand for water and advances in treatment and reuse technology.
3.5.1. Water Quality 3.5.1.1. Williams River
The Hunter Water Corporation and the Department of Land and Water Conservation have conducted long-term water quality monitoring at three key sites along the main channel of the Williams River for a number of years. These sites are the Tillegra Dam site, Glen William Bridge and Boags Hill at Seaham. According to the Dungog Shire Council's State of the Environment Report 2000, conclusions can be drawn that the water quality of the Williams River is generally good. Elevated phosphorus and nitrogen levels, particularly during runoff events continue however to provide favourable nutrient conditions in the lower river for the development of algal blooms (including cyanobacteria) occurring when other environmental conditions are favourable (i.e. low flow, warm and calm conditions).
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Bacteriological quality of the river is typically suitable for most purposes, except for direct human consumption. Periodic high levels tend to be recorded after rain, presumably arising from catchment runoff into the river. Direct human consumption is not recommended without some form of treatment including filtration and disinfection. Infrequent detection of giardia and cryptosporidium was also recorded during 1999/2000.
While phosphorus and nitrogen no longer show statistically significant improvement since 1987, coliform levels show a slight improvement. This trend is associated with higher flows in the Williams River over the past couple of years. Higher flows have also prevented any significant algal blooms (Hunter Water Corporation, Water Quality of the Williams River Report 1999/2000).
In order to reduce the input of nutrients into the Williams River catchment and improve water quality, the following actions, as noted in the Williams River Catchment Regional Environmental Plan, are required;
Ensure the appropriate use of fertilisers used in agriculture Control streambank erosion Restrict cattle access to streams Manage point sources of pollution Utilize artificial wetlands to trap run-off Upgrade the Dungog Sewage Treatment Works Control septic tank installation Improve flow management
Undertake appropriate water monitoring, not only for regulatory purposes but to assist in understanding the processes affecting water quality and to predict changes in water conditions Possibly treat water prior to storage in Grahamstown Dam.
HDB\\Master\c\Myoocuments\Duflgog Local Environmental Plan 34 Local Environmental Study - Dungog Shire Council
3.5.1.2. Allyn River
The Paterson and Allyn River Landcare Group and the Gresford Landcare Group have conducted extensive monitoring of the Allyn River at a number of sites.
In general turbidity levels in the Allyn are below the maximum level of turbidity in raw drinking water (5ntu). Low levels of salinity were recorded, though they increased downstream. Phosphorus levels were generally low (<0.01mg per litre) but increased with rain events as sediment is washed into the river. Other sources of phosphorus include livestock faeces. Low levels of nitrate (<0.1mg per litre) are recorded, but increase gradually downstream. Levels of fecal coliforms at the two monitored sites have been high, especially in the warmer months, indicating that water is not suitable for drinking or swimming in the warmer months, possibly due to agricultural practices and stock access to the river.
3.5.1.3. Paterson River
The Paterson and Allyn River Landcare Group and the Gresford Landcare Group have conducted extensive monitoring of this river system at a number of sites.
Turbidity is a minor problem with levels usually greater than the maximum level allowed for drinking water as reported in the Dungog Shire Council 2000 State of the Environment Report. Turbidity increases in times of high rainfall and distance downstream with the highest levels near the confluence of the Hunter River. In relation to electrical conductivity, most sites are low to moderate with levels increasing in times of low rainfall and warmer months when there is low flow. Phosphorus levels regularly exceed the lowest level know to cause algal growth with the highest levels recorded near the confluence of the Hunter River. Low nitrate levels were recorded at all sites (<0.1 mg per litre) and increased only during rainfall events. Faecal coliforms are generally higher than that of the Allyn River. The
HO B\\Master\c\Myoocum ents\Dungog Local Environmental Plan 35 Local Environmental Study - Dungog Shire Council
water is not suitable for raw drinking purposes or swimming during the summer months.
The levels of faecal coliforms in the Paterson! Allyn Catchment are of particular concern. The main source appears to be livestock, but since livestock numbers are likely to remain static, the most likely source of an increase in fecal colifornis is new residential development.
The levels of phosphorus and nitrates were generally below the minimum level known to cause algal blooms. High nutrient levels are of concerns because of the threat of toxic blue/green algae. Future residential developments in the catchment will need to be carefully managed to ensure that the capacity of catchment soils for septic tank absorption is not exceeded (Dungog Shire Council, State of the Environment Report, 2000).
Appendix E includes some water quality testing to the Williams, Paterson and Allyn Rivers.
3.5.2. Water Usage
The waterways in the Dungog area are used for potable water supply, agriculture and recreation. These uses and the increasing development throughout the catchment have increased the pressure on the river systems.
In general, unsympathetic water management has led to the lowering of water quality, which has increased salinity in all major rivers in NSW. It has also led to larger and more frequent bluegreen algal blooms and the loss of biological communities in the river systems (Hancock, 2000).
HDB\\Master\c\Myoocumeflts\Dungog Local Environmental Plan 36 Local Environmental Study - Dungog Shire Council
In August 1995, the NSW State Government placed an embargo under Section 22BA of the Water Act 1912 on the approval of licences to extract water on unregulated streams in the State. The aim of the embargo is to ensure that no additional stress or water shortage occurs in the unregulated river systems within the Hunter Valley. The embargo basically applies to irrigation supply, though it severely restricts industrial water supply. Stock and domestic supply and construction of catchment dams is not primarily affected by this restriction, nor is the holding of current riparian rights.
The new Water Management Act 2000 secures water for the basic needs of rural landholders, Water can be extracted from a river or an aquifer without an access licence to meet basic stock and domestic water needs. Rural land owners will be permitted to construct a dam to capture up to 10% of the average regional rainfall-runoff, as previously permitted by the Water Act 1919. The Water Management Act also requires the development of water management plans for sharing of water resources within catchments and industries.
The Department of Land and Water Conservation are protecting the riparian right that exists under the Water Act 1912 for all rural properties with a river frontage. The department does not support the subdivision of river frontages to create more riparian rights, and requests that the riparian right be viewed as an existing entitlement and not be extended to subdivided lands.
3.5.2.1. Potable Water Supply
The Williams River provides an average of 90 megalitres a day or 40% of the potable water required for the 400,000 residents of the Newcastle Region. This water is discharged from Chichester Dam and the Hunter Water Corporation's Chichester Pipe Line.
Dungog Shire Council draws water from the Hunter Water Corporation's Chichester Pipeline below the Dungog Water Treatment Plant to supply water to approximately 2,000 tenements connected to the reticulated supply in these areas. The water from the pipeline at Dungog and below is fully treated and satisfies the
HDB\\Master\c\Myoocuments\oungog Local Environmental Plan 37 Local Environmental Study - Dungog Shire Council
1996 Australian Drinking Water Guidelines (Dungog Shire Council, Statement of the Environment Report 2000).
There are four water schemes in the shire, Dungog, Clarence Town, Paterson/Martins Creek! Vacy and Gresford. The Dungog, Clarence Town and Paterson district water schemes are supplied by the Hunter Water Corporation supply, while the town of Gresford is supplied with water through a Council operated reticulated system that draws water from the Paterson and Allyn River. Micro-filtration and chlorination treat water in this system. The township has a population of around 300, with 140 services.
In Paterson, the water services extend to the main villages limits of Court Street, Johnstone/King Streets, Queen Street. High Street and William Street, as detailed in Plan 3. The water supply in Clarence Town extends to Earl Street, Russell Street, King Street Marshall and Sheriff Streets, as noted in Plan 4. Water supply servicing in Gresford and East Gresford is detailed in Plan 5. In Dungog, most of the town is serviced by reticulated water and sewer, including the area to the northeast of the town. The limit of the service provision is detailed in Plan 6.
The water supply in the Paterson district is reaching a critical situation as an increasing number of applications are sought from the Black Rock Road areas for connections to the Paterson District Water supply delivery mains (G. McDonald, pers. comm.). The existing supply delivery mains are not capable of supplying continuous potable water to the increasing number of residential dwellings. This may lead to a restriction on the system, reduced water pressure or even total water loss.
It is unlikely that further connections to the Paterson District Water supply delivery mains in the vicinity of Black Rock Road will be permitted until upgrading works are carried out. There are detailed in the Council's Strategic Business Plan- Water Supply Schemes.
HDB\\Master\c\Myoocuments\Dungog Local Environmental Plan 38 Dungog Shire Council ,\ '1 Paterson - Services 4956 \
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3.5.2.2. Agricultural Water Usage
Licences for small scale extraction on unregulated rivers are issued for town water supply, irrigation, industrial use, stock watering, domestic use and farm use, e.g. dairy wash down, etc. The following table indicates the number of surface water licences in 1999 on unregulated streams and the total area authorized for irrigation along the streams.
The Department of Land and Water Conservation may grant licences for stock purposes, subject to rigorous environmental assessment and with the imposition of strict rules as to their use. Restrictions includes volumetric limits (5 megalitresl year), metering and river flow limits.
The water stored in the 20,000 megalitre Lostock Dam on the Paterson River is allocated for various downstream uses, particularly irrigation and town water supply and is controlled by the Department of Land and Water Conservation.
The current trend to rural residential subdivision represents a major threat to low flows because of the result of potential increase water use under increasing riparian rights. The largest increase in riparian extraction is on streams close to residential areas, which includes the lowest sections of the Williams and Paterson Rivers.
Table 1. Water extraction licensing, Dungog Shire Sub- Total number of water Number of irrigation Area authorized for catchment licences licences irrigative (ha) Ailyn f 82 77 797 Paterson- 2 0 0 residual Williams L 163 150 1693 1-lirnf,r -,.-,,.l r,i...-.;...... , u i i..i IvIl UI IIIlIlL r-port .UUU)
HDB\\Master\c\MyDocuments\Dungog Local Environmental Plan 39 Local Environmental Study - Dungog Shire Council
3.5.2.3. Recreational Usage
The allocation of water for recreational requirements has no specific water management issues. This is despite the fact that the Dungog Shire is a popular area for primary contact including swimming, secondary contact including boating and passive contact including bush walking and recreational pursuits.
As with the environmental values of the river, recreational values relate to the water required to maintain those values. This not only affects the depth and flows at a particular time of the year, but also helps preserve the aesthetic criteria and includes such things as risk from infection, the presence of submerged objects, and physical appearance of the water body. Future management of the water resources of the catchment needs to consider recreational requirements.
3.5.2.4. Environmental Flows
Following the occurence of blue-green algal blooms in late 1991, the requirement for river systems to have a minimum flow has risen to prominence.
A recent initiative was a commitment by Hunter Water to increase environmental releases from Chichester Dam. This was an outcome of the Health Rivers Commission Report into the Williams River and a requirement of the licence to extract water issues by the DLWC (Hunter Water Corporation, 2001). The release pattern should enhance the aquatic and riparian environments of the Williams River (Dungog Shire Council State of the Environment Report, 2000). Historically, Hunter Water has released 2.5 Ml a day during the 60% of the time when the dam did not overflow its spillway. Under the new initiative this dry weather release has been increased from 2.5 to 14 Ml per day when inflow exceeds this level. When the inflow into the dam is less than 14Ml, outflow will be matched to the inflow level.
HDB\\Master\c\Myoocuments\Dungog Local Environmental Plan 40 Local Environmental Study - Dungog Shire Council
A hydroelectric generator at the dam outlet controls the flow and harnesses rather than wastes the energy in the flowing water. In December 2000, the Minister for Energy officially opened the hydro- generation unit at Chichester Dam. The amount of electricity generated will be equivalent to the annual consumption of approximately 70 homes.
The environmental flows released will assist in maintaining the natural ecosystems in the Chichester River. This is important as the damming of a river impacts on the natural flows below the dam and affects the quantity of downstream flow and the pattern of flow (Hunter Water Corporation, 2001).
3.5.3. Groundwater Resources
There is little detailed information available on the occurrence of underground water within the Dungog area. A number of licensed small-scale groundwater extractions, in the form of wells, bores and spearpoints occur in the Shire for agricultural uses (Williams River Total Catchment Management Study- Water Quality, 1993).
The occurrence of groundwater is controlled by the nature of the underlying rock that controls the rate groundwater can be pumped from a bore and influences the quality of the water. The underlying rock strata in the Shire are variable, however, the strata uniformly operates as a fractured rock aquifer (Williams River Total Catchment Management Study- Hydrology, 1993).
HDB\\Master\c\MyDocuments\tjuflgOg Local Environmental Plan 41 Local Environmental Study - Dungog Shire Council
Within the Shire, the conductivity of the groundwater, which measures salinity, ranges from 2 000 to 8 000 pSI cm, although it is generally less than 4 000 pSI cm. This compares to an average value of 200 pSI cm in the Paterson River at Gresford. Water with salinity levels greater than 700 pSI cm are unsuitable for irrigation of most crops. Salinity levels greater than 800 p.5/ cm are unsuitable for potable purposes.
F14 Groundwater in the Shire is generally saline and mostly used for agricultural purposes.
3.6. Land Usage
The major forms of land use within the Dungog Shire are Agriculture Catchments for water supply Forestry Nature conservation Recreation Extractive industries Rural! Residential Subdivision Urban
The raising of beef cattle is currently the main industry for the area, even in the steepest of country in the Williams and Allyn River valleys. Rolling and undulating hills may be seasonally sown to pasture. Spring and autumn firing of pasture, particularly in steep country, was once widespread, but is now a less common management practice.
Dairying occupies the alluvial plains and gently inclined slopes. Minor areas of cropping include lucerne, maize and sorghum occurs on the more fertile alluvial soils of the Allyn, Paterson and upper Williams. Some poultry farming occurs on higher- level terraces adjacent to floodplains. More rural residential subdivisions and hobby farms exist in the traditional grazing areas of Dungog Shire (NSW Agriculture, 2001).
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Logging of native timber is undertaken on private properties, particularly within the steeper country of the Clarence Town Hills region. Forestry operations are concentrated in the north, but have reduced in size and distribution in recent years.
The Boral timber mill at Maxwells Creek currently employs 33 people, however in recent years there were more than 40 staff and the reduction in employees is a result of a downturn in the timber products market.
Chichester, Avon River, Dungog, Fosterton and Trevor State Forests occur in the center and north of the area; Craven State Forest occurs in the east; Copeland Tops State Forest occurs in the north (Henderson, 2000).
Barrington- Gloucester plateau, the headwaters of Chichester River and part of the Williams River form the Barrington Tops National Park. The national park contains one of the five original cores of rainforest present in NSW before European settlement (National Parks and Wildlife Service, 1989). The Barrington Tops National Park is included in the World Heritage Listing of the Sub-tropical and Temperate Rainforest Parks of Eastern Australia, with part of the National Park being recently declared a Wilderness Area. The Gloucester Tops was used for summer grazing until 1969 when the National Park was established. Further additions were proposed in 1983 by a joint submission from the National Trust and five conservation organizations (McDougall, 1983). Certain additions occurred in 1984 and included the Chichester River Catchment (Department of Environment and Planning, 1984).
In total NPWS and State Forests control approximately 22% of the Shire's land and do not pay any rates to Council. The Hunter Water Corporation also utilizes a large area of the Shire as water catchment areas, however the Council does not receive any rates for the land that collects the water and generates an income of $28 million (Low, 2001).
The National Parks and Wildlife Service and Hunter Water Corporation jointly manage the Chichester Dam catchment, which extends from the Barrington Tops National Park, through the Chichester State Forest to the confluence of the Wangat and Chichester Rivers that form the dam. The catch ment for the Chichester Dam has an area of 197km2.
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Small quarries, mostly used for road base, occur throughout the shire, often in the highly fractured Carboniferous beds and in the Permian conglomerates near Dingadee, Bingleburra, Martins Creek and the Upper Allyn.
Tourism has been an important industry for the region since the 1920s (Hartley, 1993), with national parks, state forests and Chichester Dam within an easy drive of Newcastle and Sydney.
Small areas of Crown Land occur in the area. Those areas within the upper Chichester catchment are likely to be retained for conservation. Dungog Common occupies one of the largest parcels of Reserve Crown Land, immediately to the west of Dungog (Crown Lands Office, 1986).
A number of aboriginal land claims have been granted in the Dungog Shire. The Worimi Land Council mostly holds the land claims in the Clarence Town locality.
3.6.1. Agricultural Land Suitability
The Shire of Dungog was mapped by the Department of Agriculture in the 1980's to determine the agricultural land suitability of land within the Shire. This land was classified according to the agricultural land suitability class system. The five-class system identifies land as follows;
Class I Land capable of regular cultivation for cropping (cereals, oilseeds, fodder, etc) or intensive horticulture (vegetables, orchards) Class 2 Land suitable for cultivation for cropping but not suited to continuous cropping or intensive horticulture
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Class 3 Land suitable for grazing; well suited to pasture improvement and can be cultivated for an occasional cash crop or forage crop in conjunction with pasture management. Class 4 Land suitable for grazing and not suitable for cultivation Class 5 Land suitable only for rough grazing or land not suitable for agriculture.
The aim of the classification and mapping is to identify those lands that should be protected from further subdivision. Desirably, a prime agricultural zone should be identified and protected by planning controls.
The Shire of Dungog comprises lands classified as Class 2 to Class 5, with the most predominant class of land being Class 4 (51% of Shire area). The approximate breakdown of agricultural land suitability classes for the Shire is as follows;
Class 2 17% of Shire area Class 3 24% of Shire area Class 4 51% of Shire area Class 5 8% of Shire area
The relatively limited areas of Class 2 land comprise the alluvial flats adjacent to the Paterson and Williams Rivers and are affected by flooding.
Classes 3, 4 and 5 form the remainder of land within the Shire and these land classes are dispersed within the shire.
NSW Agriculture has advised that due to the operation of extensive grazing and dairying enterprises, much of the Shire's Class 3 and 4 lands are capable of significant agricultural production.
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3.6.2. Riparian Quality
The riparian zone is identified as the area on and immediately adjacent to the riverbank or flowline of a river. Vegetation in this zone ensures bank stability, reduces erosion, provides habitat and food and acts as a buffer zone to reduce contaminants entering the river system.
In Dungog Shire, continued development such as construction activities, subdivision and land clearing is having a major impact on riparian zones.
Clearing and erosion in the riparian zone, together with the invasion of weeds has reduced the quality of the riparian zone. Deliberate clearing in these areas for subdivision and other developments has ceased, but major pressure exists on remaining vegetation as a result of introduced weeds, grazing and erosion. Stock access to the riparian zone impacts heavily on the vegetation by reducing the regeneration of native species due to grazing or trampling.
Previous removal of vegetation in the riparian zones and the failure of native species to regenerate in the areas have increased the erosion and undercutting of streambanks, particularly during periods of high flow.
As noted in Chapter 3.5.2, the Department of Land and Water Conservation, Hunter Catchment Management Trust and the Williams River TCM Committee are actively attempting to protect and maintain the riparian zones in the Dungog area. As part of this program, they do not support the subdivision of riparian rights and are encouraging the maintenance of the existing riparian right as an entitlement.
The Williams River Catchment TCM Committee recommends that riparian areas should be fenced and rehabilitated when large properties are subdivided.
F20i Construction, subdivisions and land clearing have major impacts on riparian zones, possibly causing erosion of streambanks, increased sediment loads and changes to waterways.
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3.6.3. Existing Land Zonings
The intentions and types of zones contained in the Dungog Local Environmental Plan 1990 are as follows; 1(b) General Rural Zone 1(c) Rural Residential zone 1(d) Rural Farmiets zone 1 (f) Rural (forests) zone 2(a) Residential A zone 3(a) Local Business zone 4(a) General industrial zone 4(b) fight industrial zone 5(a) special uses A zone 5(b) special uses B zone 5(c) Special Uses (limited building area) zone 6(a) open space (existing recreation) zone 6(b) open space (private recreation) zone 7(a) rural environmental protection (flood liable land) zone 7(b) rural environmental protection (water catchment area) zone 7(c) rural environmental protection (habitat) zone 8 national parks and nature reserve zone
There is obviously a proliferation of land zonings in the current LEP, many with similar aims and objectives. A review of the zoning provisions is required and will be conducted as part of the preparation of a new Shire-wide Local Environmental Plan, It is Council's intention in the new LEP to review, simplify and reduce the number of zones in the Dungog Local Environmental Plan 1990 and to make the process controlling development in the Shire less confusing and complicated.
3.7. Environment Protection Areas
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There are a Jariety of areas in the Shire that require protection due to significant environmental characteristics. The current Dungog LEP provides for three rural environmental protection zones, however, these need revision to maintain a greater level of protection to significant environmental features.
3.7.1. Protected Wetlands
No State Environmental Planning Policy No. 14 Coastal Wetlands exist in the Dungog Shire, although the adjoining local government areas of Port Stephens and Maitland have SEPP 14 wetlands near to the boundaries of the Dungog Shire.
The Hunter Regional Environmental Plan 1989 lists protected wetlands under Schedule 2: Hunter Region Wetlands. There are three Schedule 2 wetlands in the Dungog Shire, located in Paterson (grid reference 698912 & 691900) and Boggy Swamp at Cobark (grid reference 595717). The provisions relating to wetlands note that any development needs to consider the environmental impacts of such development, especially in relation to the National Conservation Strategy for Australia (Hunter REP, 1989).
3.7.2. Water Catchment Areas
The Hunter Water Corporation Limited (Special Areas) Regulation 1997 provides for restricted land uses within the special areas maintained for water supply. Two special areas, namely Chichester Catchment Area and the Williams River Catchment Area, affect Dungog Shire. Restrictions in these areas include some agricultural activities and sewage disposal.
The location and extent of the two special water catchment areas are detailed in Plan 7and Plan 8.
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3.7.3. State Environmental Planning Policy No. 44- Koala Habitat
The Dungog LGA is included under Schedule 1 of State Environmental Planning Policy No. 44- Koala Habitat Protection. SEPP 44 aims to encourage the conservation and management of areas of natural vegetation that provide habitat for koalas. This is to ensure a permanent free-living population of koalas over their present range and reserve the current trend of koala population decline. As part of the provisions of this policy, plans of management must be prepared before development consent can be granted in areas of core koala habitat. Core koala habitat within Dungog LGA has not yet been identified (Dungog Shire Council State of the Environment Report, 2000).
The adjoining Port Stephens Shire LGA has extensive areas of core koala habitat and a Comprehensive Koala Management Plan has been prepared for the Shire.
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