| Field | Value |
|---|---|
Title |
Hydrogeological Landscapes of New South Wales and the Australian Capital Territory |
Alternative title(s) |
HGL Study Areas - NSW & ACT |
Abstract |
Hydrogeological Landscape (HGL) boundaries and descriptions have been derived for a number of project areas across NSW. The HGL concept provides a structure for the understanding of how salinity manifests itself in the landscape and how differences in salinity are expressed across the landscape. A HGL spatially defines areas of similar salt stores and pathways for salt mobilisation. The process of HGL determination relies on the integration of a number of factors: geology, soils, slope, regolith depth, and climate; an understanding of the differences in salinity development; and the impacts (land salinity/salt load/water electrical conductivity) in landscapes. Information sources such as soil maps, site characterisation, salinity site mapping, hydrogeological conditions and surface and groundwater data are combined to develop standard descriptions for each HGL unit. Derivative maps showing overall salinity hazard and individual hazard due to salinity expressed as land salinity, salt export (load) and stream EC are available for most mapped areas, and are also viewable as custom layers in eSPADE. Overall salinity hazard uses a five class system (very low, low, moderate, high, very high). This helps the user identify and prioritise where salinity management actions may need to be targeted. Hazard due to salt land, salt export and stream EC uses a three class system (low, moderate, high). Knowing which of these are of greater significance in a HGL unit helps the user decide on the types of management actions that may be applied. Spatial resolution varies between 1:50 000 and 1:250 000, depending on the resolution of the source data used to define the HGL boundaries. |
Resource locator |
|
Data Quality Statement |
Name: Data Quality Statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: DQS – Hydrogeological Landscapes of NSW and the ACT Function: download |
eSPADE |
Name: eSPADE Protocol: WWW:DOWNLOAD-1.0-http--download Description: eSPADE is a Google Maps-based information system that allows easy map-based access to all public soil and land information in the NSW Soil and Land Information System (SALIS), including both soil profiles and soil mapping. Also available via eSPADE are a number of Statewide soil maps, including the Land and Soil Capability and Inherent Soil Fertility maps that provide the foundation for the mapping of Biophysical Strategic Agricultural Land (BSAL). Other Statewide map layers of specific soil and land attributes are also available through eSPADE. Function: download |
Unique resource identifier |
|
Code |
8bb2763b-6be0-4385-904c-9d1e388bc085 |
Presentation form |
Map digital |
Edition |
First |
Dataset language |
English |
Metadata standard |
|
Name |
ISO 19115 |
Edition |
2016 |
Dataset URI |
https://datasets.seed.nsw.gov.au/dataset/8bb2763b-6be0-4385-904c-9d1e388bc085 |
Purpose |
This metadata provides a general introduction to HGL mapping areas in NSW and ACT. Data packages containing GIS data and associated HGL descriptions for the individual mapping areas are available for download separately. |
Status |
On going |
Spatial representation |
|
Type |
vector |
Geometric Object Type |
complex |
Spatial reference system |
|
Code identifying the spatial reference system |
4283 |
Spatial resolution |
0 m |
Additional information source |
Boundaries for this layer come from individual HGL projects which were mapped at different scales. There may be edge matching and scaling differences between adjacent project areas. |
| Field | Value |
|---|---|
Topic category |
| Field | Value |
|---|---|
Keyword set |
|
keyword value |
SOIL WATER-Salinity GEOSCIENCES-Geology GEOSCIENCES-Geomorphology HAZARDS LAND-Use GEOSCIENCES-Hydrogeology BOUNDARIES-Biophysical |
Originating controlled vocabulary |
|
Title |
ANZLIC Search Words |
Reference date |
2008-05-16 |
Geographic location |
|
West bounding longitude |
139 |
East bounding longitude |
155 |
North bounding latitude |
-38 |
South bounding latitude |
-27 |
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 |
2008-01-01 |
End position |
N/A |
Dataset reference date |
|
Resource maintenance |
|
Maintenance and update frequency |
Irregular |
Contact info | |
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| Field | Value |
|---|---|
Lineage |
Hydrogeological landscape (HGL) mapping uses the following base data for delineation of map units: published 1:1 million and 1:250 000 geological mapping data (polygon); published 1:250 000 soil landscape data (polygon); soil profile data from the OEH SALIS database (point); and Digital Elevation Models (DEM) and derivative products taken from the DEM. The published and reconnaissance level mapping are combined and rationalised to create complete hydrogeological landscape classification (map unit) coverage for each study area. |
| Field | Value |
|---|---|
Limitations on public access |
|
| Field | Value |
|---|---|
Scope |
dataset |
DQ Completeness Commission |
|
Effective date |
2016-11-01 |
Explanation |
Spatial data capture is complete for selected study areas. Additional areas will added as future projects are completed. |
DQ Topological Consistency |
|
Effective date |
2016-11-01 |
Explanation |
All polygons in the coverage are topologically correct and all polygons have been attributed in the original datasets. Data has been visually checked at applicable scales. |
DQ Absolute External Positional Accuracy |
|
Effective date |
2016-11-01 |
Explanation |
The accuracy of the coverage varies across the mapping area as map polygon boundaries were derived from different sources. HGL boundaries derived from published and draft 1:100 000 scale mapping are generally accurate to 100 m. HGL boundaries derived from published 1:250 000 scale mapping are approximate and generally accurate to 250 m. |
DQ Non Quantitative Attribute Correctness |
|
Effective date |
2016-11-01 |
Explanation |
All polygons are labelled with a hydrogeological landscape unit tag, and attributed with information relevant to salinity management. |
| Field | Value |
|---|---|
Responsible party |
|
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| Field | Value |
|---|---|
Metadata point of contact |
|
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
Metadata date |
2024-02-26T13:37:24.204770 |
Metadata language |
|