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Identification

Field Value

Title

Estuary Drainage Catchments

Alternative title(s)

EstuaryDrainageCatchments

Abstract

Estuary Drainage Catchment is the hydrological boundary of the catchment draining to each estuary in NSW. There are two spatial layers - a line feature class (EstuaryDrainageCatchmentBdy) to record the source of the catchment boundaries linework and a polygon feature class (EstuaryDrainageCatchment) to record the surface area of the catchments. Both these layers are based on the digitising of catchments for the NSW Stressed Rivers Assessments conducted for the water sharing plan process. The 1:25,000 topographic map series and coastline layers from the Land and Property Management Authority were the primary datasets, modified by on-screen re-digitising of the true hydrological boundary adjacent to the estuary mouth and coastline. Stressed Rivers boundaries were modified further up-catchment when obvious errors were detected. Land draining directly to the sea has been labelled as 'nil estuary'. These layers provided the initial linework for developing the Estuary Tidal Limits datasets.

Resource locator

Show on SEED Web Map

Name: Show on SEED Web Map

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Display dataset on SEED's map

Function: download

Data Quality Statement

Name: Data Quality Statement

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

DQS - Estuary Drainage Catchments

Function: download

WMS - Estuary Drainage Catchments

Name: WMS - Estuary Drainage Catchments

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Connect to Web Map Service (view in GIS)

Function: download

Land EstuaryDrainageCatchment

Name: Land EstuaryDrainageCatchment

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Download Shapefile

Function: download

Connect to KML service (view in Google Earth)

Name: Connect to KML service (view in Google Earth)

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Connect to KML service (view in Google Earth)

Function: download

Connect to REST Service (JSON, SOAP)

Name: Connect to REST Service (JSON, SOAP)

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Estuary Drainage Catchments - REST

Function: download

Unique resource identifier

Code

1e1d5de5-2557-4355-82ba-a99dc0274556

Presentation form

documentDigital

Edition

Not known

Dataset language

eng

Metadata standard

Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Version

1.1

Dataset URI

https://datasets.seed.nsw.gov.au/dataset/1e1d5de5-2557-4355-82ba-a99dc0274556

Purpose

This estuary dataset was developed under a new Monitoring, Evaluation and Reporting (MER) Program initiated by the NSW Government in 2007 to assess and better manage the health of natural resources across the State. The MER Program is in response to the NSW Natural Resources MER Strategy which has the objective of providing appropriate information for decision-making by natural resource managers.

Status

completed

Spatial representation

Type

vector

Geometric Object Type

curve

Geometric Object Count

275

Spatial reference system

Authority code

GDA94 Geographic (Lat\Long)

Code identifying the spatial reference system

4283

Equivalent scale

1:None

Additional information source

This mapping was done as part of the NSW Monitoring Evaluation and Reporting Program - Estuaries Theme REPORT_NSWEstuariesCatchments.doc

Classification of spatial data and services

Field Value

Topic category

oceans

Keywords

Field Value

Keyword set

keyword value

BOUNDARIES

MARINE-Estuaries

WATER

WATER-Hydrology

Originating controlled vocabulary

Title

ANZLIC Search Words

Reference date

2008-05-16

Geographic location

West bounding longitude

149.872924

East bounding longitude

153.621636

North bounding latitude

-37.468817

South bounding latitude

-28.169266

Vertical extent information

Minimum value

-100

Maximum value

2228

Coordinate reference system

Authority code

urn:ogc:def:cs:EPSG::

Code identifying the coordinate reference system

5711

Temporal extent

Begin position

2007-12-04

End position

N/A

Dataset reference date

Date type

creation

Effective date

2008-04-24

Date type

publication

Effective date

2010-07-23

Resource maintenance

Maintenance and update frequency

asNeeded

Date of next update

2011-12-31

Contact info

Organisation name

Department of Planning, Industry and Environment

Full postal address

PO Box A290

Sydney South

NSW

1232

Australia

data.broker@environment.nsw.gov.au

Telephone number

131555

Facsimile number

02 9995 5999

Email address

data.broker@environment.nsw.gov.au

Responsible party role

pointOfContact

Quality and validity

Field Value

Lineage

The Stressed Rivers Assessment mapping (ANZLIC metadata No: ANZNS0359000798) provided the foundation for the estuarine catchment boundaries. The combined hydrological catchments of the Stressed Rivers mapping were separated and defined using NSW 1:25,000 10m contours plus other dataset's SPOT5 imagery (ANZNS0281000254), orthorectified image mosaics (ANZNS0404001267), NSW DTDB landform contours (ANZNS0404000853). Any new catchment boundaries were screen digitised.
The two layers were developed by combining the spatial features of existing datasets - Stressed Rivers Subcatchments, Coastline (mean high watermark)and Bay mouths. Of these datasets the Stressed Rivers Subcatchments and Coastline were the primary datasets used to define these catchments. In the majority of cases the Stressed Rivers Subcatchment boundaries were used unchanged however, there were instances where catchments have been combined (merged) or subdivided because they did not represent the true hydrological catchment/watershed. These adjustments have resulted in a spatial layer that accurately represents the hydrological estuarine catchments.

Boundaries from the Stressed Rivers Subcatchment layer have been accepted as being correct however, some boundaries were identified as incorrectly representing catchments and in these instances they were adjusted through on screen digitising using spatial data including Topographic contour and drainage lines along with imagery and DEM. This process was not performed uniformly across the dataset only where problems were identified. There still exists boundaries that are 40-50m out and in some instances this error may be greater.

It was also difficult in the flatter areas adjoining the coast to identify the boundary between the catchment and beach area. In these instances where the contour or DEM information was not useful the boundary has been captured parallel to the beach on the assumption that a sand dune exists. Further delineation of this boundary could be possible through the use of LiDAR or survey data. This level of accuracy is not required at this time.

Investigation of macrophyte areas (Estuarine_Macrophytes) revealed several macrophyte occurrences outside of the catchments as defined earlier. These occurrences were investigated resulting in changes to several boundary locations. For example, Bowen Island as defined by the Bay mouths theme was altered to encompass the macrophyte information. Catchments where macrophyte information has altered the boundary include:
Jervis Bay, Little Lake (Wallaga), Macleay River, Manning River, Meroo Lake, Sandon River, Tweed River.

Constraints related to access and use

Field Value

Constraint set

Use constraints

This data is provided under a Creative Commons Attribution 4.0 licence http://creativecommons.org/licenses/by/4.0 Attribute 'Department of Planning, Industry and Environment ' in publications using this data.

Limitations on public access

Data Quality

Field Value

Scope

dataset

Completeness Commission

Date type

revision

Effective date

2009-01-10

Explanation

The dataset is complete.

Completeness Ommission

Date type

revision

Effective date

2009-01-10

Explanation

Conceptual Consistency

Explanation

Topological consistency is performed as part of the quality assurance procedures using ESRI ArcGIS software where polygons must not overlap; must not have gaps. Check geometry and repair geometry were run with no error messages.

Absolute External Positional Accuracy

Explanation

The catchment boundaries have been based on the Stressed Rivers Catchment boundaries (SRC bdy). In some cases the SRC bdy have been merged to make larger catchments, whilst others have been subdivided. In other cases the location of the boundary has been altered. In carrying out this work the topographic drainage and contour layers have been referenced. On closer inspection of some of the SRC bdy (South Coast only) with topographic information of contour and drainage layers it is evident that the boundary may not always be correctly located. This error can be as minor as 40 - 50m or occasionally greater.

Non Quantitative Attribute Accuracy

Explanation

NAME: Catchment names were checked against the Geographic Names Board (GNB) names to get consistency between the GNB and coastal estuaries mapping. ESTUARY_NO: Estuary number is a unique number for each NSW estuary, with numbering from north to south and anti-clockwise around bays/harbours finishing with the bay/harbour/port polygon. TYPE: denotes whether the polygon is land (catchment), freshwater, tidal waters (estuarine). MGAZONE: provides details of the single or multiple MGA transvers mercator map projection zone a catchment falls into. AREA_m2_z55, AREA_Ha_z55: Area of the polygon in the associated MGA zone. AREA_m2_z56, AREA_Ha_z56: Area of the polygon in the associated MGA zone. NOT_MER: those with '1' in this column indicates the estuary does not have waterway area shown on the 1:25,000 topographic map. and therefore is not being included as part of the State MER program.

Responsible organisations

Field Value

Responsible party

Contact position

Data Broker

Organisation name

Department of Planning, Industry and Environment

Full postal address

PO Box A290

Sydney South

NSW

1232

Australia

data.broker@environment.nsw.gov.au

Telephone number

131555

Facsimile number

02 9995 5999

Email address

data.broker@environment.nsw.gov.au

Web address

http://www.planning.nsw.gov.au/

Responsible party role

pointOfContact

Metadata on metadata

Field Value

Metadata point of contact

Contact position

Data Broker

Organisation name

Department of Planning, Industry and Environment

Full postal address

PO Box A290

Sydney South

NSW

1232

Australia

data.broker@environment.nsw.gov.au

Telephone number

131555

Facsimile number

02 9995 5999

Email address

data.broker@environment.nsw.gov.au

Responsible party role

distributor

Metadata date

2008-04-24

Metadata language

eng