Shows the boundaries of all Commonwealth Electoral Divisions. Data are captured from 1:10 000 and 1:50 000 scale maps in urban areas and 1:100 000 and 1:250 000 scale maps in rural areas. Attribute information includes date of electoral redistribution. Produced in conjunction with the Australian Electoral Commission. Data are suitable for GIS applications. Data will be updated after each redistribution. Please Note: The NSW Land Information Centre holds copyright over the NSW data.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

Executive Summary Key Scientific Results and the Wallis Lake System. The key results of the survey are summarised in Table A. The oxygen fluxes into the sediments vary about two-fold between all sites. The oxygen fluxes measured here are typical, but are in the low to medium range of other fluxes in Australian estuaries. These oxygen fluxes represent winter rates only. We speculate oxygen flux into the sediments will probably be higher in spring, as a result of typical 'spring bloom' conditions, increased temperatures (10 oC or more), fresh water and nutrient runoff from the catchment, and higher carbon and nutrient loads to sediments. The carbon fluxes (TCO2) measured are indicative of the amount of organic carbon oxidised in the sediments. When O2 and TCO2 fluxes are about the same, then oxygen reduction accounts for most carbon oxidised. This was found at all sites except Wallis Creek (Site 3), where we infer that some sulphate reduction was occurring in near-surface sediments at the time of the survey. The carbon flux data are also indicative of a minimum carbon load to the sediments and these have been used to make an assessment of trophic status of sites based upon work done by Nixon (1995) (oligotrophic (O), mesotrophic (M) and eutrophic (E)). We use the O, M, E notations in a qualitative context only. Most sites in Wallis Lake have a mesotrophic status. The data from the Coolongolook River (Site 1) indicate that, in addition to organic matter, other reduced substances (perhaps metallic sulphides) are consuming oxygen. The % denitrification efficiency is emerging as a potential indicator of water and sediment quality. Because N is probably most important in controlling primary productivity (and plant growth) in Australian estuaries the % denitrification efficiency, when high, is indicative of most N being lost from the system as N2 gas. Conversely when low, this measuare indicates most N is retained in the system and, as such, could result in deteriorating water quality. On this basis all sites currently have 'good' water quality with denitrification efficiencies between 85 to 100 %. Some other modelling work indicates that a critical denitrification efficiency of about 40 % is indicative of deteriorating water quality. The sediment fluxes of phosphorus indicate that the sediments are a trap for P released from organic matter at the sediment water interface. There is no evidence for a release of P from sediments as a result of catchment P loadings Site Comparisons. The % denitrification efficiency indicator has been summarised above. All sites are ranked equally, and this indicator suggests no current risk to water quality because of poor N cycling in sediments. The TS % (total sulphur) content of the sediments is indicative of sulphate reduction occurring in the sediments. All sites have TS contents above background levels and do indicate that sulphate reduction has been occurring in these sediments. The data from the benthic chambers indicate that only at one site (Wallis Creek) was sulphate reduction occurring in the sediments at the time of the survey. The surface sediment (0 - 1 cm) TS data are integrated over about 10 year period (at sedimentation rates of about 1 mm/yr). We suggest that sulphate reduction is more likely to occur during the summer months when primary productivity is probably higher and the water column is more likely to be stratified. Sulphate reduction produces reduced sulphides in the sediments that may interfere with the nitrification process and reduce denitrification efficiency. We rank the 'risk' of deteriorating water quality at these sites in the following order: Site 2 > 4 > 3 > 1 > 5.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

1:1 000 000 Australian geoscience map sheet index.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.