Geofabric Surface Catchments - V2.1.1

ISO-19139 Metadata:

• Metadata Information
• Resource Identification Information
• Reference System Information
• Data Quality Information
• Distribution Information

Metadata Information:

Metadata language: eng

Metadata character set: utf8

Last update: 2014-08-07

Metadata constraints:

Security constraints:

Classification: unclassified

Metadata contact - pointOfContact:

Individual's name: Geospatial Data Unit

Organization's name: Bureau of Meteorology, Information Systems and Services Division

Contact's position: Geofabric Project Manager

Contact information:

Phone:

Address:

Delivery point:

 GPO Box 2334

City: Canberra

Administrative area: ACT

Postal code: 2601

Country:Australia

e-mail address: ahgf@bom.gov.au

Resource Identification Information:

Citation:

Title: Geofabric Surface Catchments - V2.1.1

Alternate titles: Geofabric Surface Hydrology Catchments 1:250,000 scale 2014,

Reference date - creation: 2014-06

Reference date - publication: 2014-06-20

Reference date - revision: 2014

Other citation details: ANZCW0503900105

Themes or categories of the resource: boundaries, transportation, inlandWaters, environment

Theme keywords:

Keywords: auxiliary

Citation:

Title: OSDM schedule names

Reference date - revision: 2008-11-10

Edition: Version 1.1

Edition date: 2008-11-10

Party responsible for the resource - custodian:

Organization's name: Office of Spatial Data Management

 The Geofabric Surface Catchments product is derived from the National Catchment Boundaries (NCB) V1.1.4.  This data defines a catchment for every stream segment containd within the Geofabric Surface Network product according to the GEODATA Nine Decond Digitial Elevation Model (DEM-9S) Version 3.  These stream segment level boundaries may be used individually or in aggregation. The product is designed to represent geographic surface boundaries that have a hydrological relationship to surface water features.  The NCB Level 1 and NCB Level 2 features are the top two levels in the NCB Catchment hierarchy and have been provided as polygon boundaries.  

This product contains one Geofabric feature type called Catchment.
It also contains three NCB feature types including: NCBLevel1Drainage Division, NCBLevel2Drainage Basin and NCBPfafstetter.

 This product is intended to support the creation of or definition of topologically consistent and hydrologically enforced streamflow aggregation boundaries.  The catchment attributes can be extending by linking the NCB Pfafstetter table to include the Pfafstetter reference system for identifying and aggregating catchments.

This product is intended to supplement the Geofabric Surface Cartography and Geofabric Surface Network data products. This product is also used to as the basis for building contracted catchments in the Geofabric Hydrology Reporting Catchments product and provides a spatial framework for analysis and assessment of streams and their catchments.

Security constraints:

Classification: unclassified

Legal constraints:

Access constraints: license,

Limitations of use: Licenced for use under Creative Commons Australia Attribution. We request attribution as © Commonwealth of Australia (Bureau of Meteorology) 2014

Legal constraints:

Use constraints:

Legal constraints:

Use constraints:

Legal constraints:

Use constraints:

Limitations of use: Licenced for use under Creative Commons Australia Attribution. We request attribution as © Commonwealth of Australia (Bureau of Meteorology) 2014.

 Geoscience Australia

 CSIRO, Water for a Healthy Country

 ANU, Fenner School of Environment and Society

Reference System Information:

Reference system identifier:

Value: 4283

Value: GCS_GDA_1994

Data Quality Information:

Scope of quality information:

Level of the data: dataset

dataset

Lineage:

Lineage statement:

 Geofabric Surface Catchments is part of a suite of Geofabric products produced by the Australian Bureau of Meteorology. The geometry of this product is largely derived from the National Catchment Boundaries (NCB) V1.1.4. It consists of catchments, NCB Level 1 Drainage Divisions, NCB Level 2 Drainage Basins and the NCB Pfafstetter table.  The feature class terminology for Geofabric Surface Catchment components has been modified to distinguish it in terms of the products underlying data model.

The AHGFCatchments are based upon polygons converted from a regular 9 second grid delineating the NCBs for the Australian continent.  The NCBs delineate hierarchically-nested catchments derived using an automated drainage analysis procedure based on a multi-flow extension of the version 3.1 flow direction grid associated with the 9 second DEM (GEODATA National 9 Second Digital Elevation Model (DEM-9S) Version 3, ANZLIC unique identifier: ANZCW0703011541).

At the highest levels in the hierarchy the NCBs aggregate the 9 second drainage basins (9 second Basins product name and ANZLIC identifier to be inserted) into 12 topographically-defined Drainage Divisions (Level 1) and 191 Drainage Basins (Level 2) approximating the Australian Water Resources Council (AWRC) River Basins (Australia's River Basins, Geoscience Australia, 1997 ANZLIC identifier: ANZCW0703005427) where possible.  At lower levels, the Level 2 units are sub-divided into successively finer sub-catchments using a modified version of the Pfafstetter procedure (Verdin, K. L. and Verdin, J. P. (1999) A topological system for delineation and codification of the Earth's river basins. Journal of Hydrology, 218(1-2), 1-12).

This layer delineates the lowest level catchment units being the sub-catchments draining directly to a stream segment in the ANUDEM stream layer or, where there are no ANUDEM Derived Streams (ANUDEM Streams), the 9 second drainage basin. The higher level catchment membership of each of these sub-catchments is derived from its NCB code.
Processing steps: 

1. ANUDEM v1.1.4 National Catchment Boundaries (NCBs) dataset is received and loaded into the Geofabric development GIS environment. 
2. feature classes from ANUDEM NCBs are recomposed into composited Geofabric Framework Dataset feature classes in the Geofabric Maintenance Geodatabase.
3. re-composited feature classes in the Geofabric Maintenance Geodatabase Feature Dataset are assigned unique Hydro-IDs using ESRI ArcHydro for Surface Water (ArcHydro: 1.4.0.180 and ApFramework: 3.1.0.84)
4. feature classes from the Geofabric Maintenance Geodatabase Feature Dataset are extracted and reassigned to the Geofabric Surface Catchment Feature Dataset within the Geofabric Surface Catchment Geodatabase.

A complete set of data mappings, from input source data to Geofabric Products, is included in the Geofabric Product Guide, Appendices. 

Changes at v2.1
    - SegnoLink updates.
    ! updates to NCB level 2 names to conform with HR_Regions.

Changes at v2.1.1
    ! Updates to NCB level 2 names to conform with HR_Regions.

    - SegnoLink attribute update to fix single catchment feature in Tasmania.

    - Correction to spelling of Numeralla river in AHGFCatchment (formerly
    Numaralla).

    - Correction of name for NCBLevel2DrainageBasinGroup, 'Moorabool River'
    Basin Group renamed to 'Little River'.

    - Fixed a series of NoFlow catchments (small internally draining catchments
    not related to a stream segment) in Murray-Darling were incorrectly
    attributed as externally draining via the ExtrnlBasn field in
    AHGFCatchments.

    - Fixed Basin attribute values in NCBPfafstetterm, which were incorrectly
    populated with BasinLevel field.
    

Distribution Information:

Distributor:

Distributor information - pointOfContact:

Individual's name: Geospatial Data Unit

Organization's name: Bureau of Meteorology, Information Systems and Services Division

Contact's position: Geofabric Project Manager

Contact information:

Phone:

Voice:

Fax:

Address:

Delivery point:

 GPO Box 2334

City: Canberra

Administrative area: ACT

Postal code: 2601

Country:Australia

e-mail address: ahgf@bom.gov.au

Format:

Format name: ESRI File Geodatabase

Format version: V 9.3

Transfer options:

Online resource:

Name of resource: Downloadable Data

Online location:http://www.bom.gov.au/water/geofabric/download.shtml