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Identification

Field Value

Title

Hydrologic Soil Groups (HSG) of NSW

Abstract

This map provides an estimation of Hydrologic Groups of soils in NSW according to the four class system (A-D)

  • A — soils having high infiltration rates, even when thoroughly wetted and consisting chiefly of deep, well to excessively-drained sands or gravels. These soils have a high rate of water transmission and have low water run-off potential.

  • B — soils having moderate infiltration rates when thoroughly wetted and consisting chiefly of moderately deep to deep, moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission.

  • C — soils having slow infiltration rates when thoroughly wetted and consisting chiefly of soils with a layer that impedes downward movement of water, or soils with moderately fine to fine texture. These soils have a slow rate of water transmission.

  • D — soils having very slow infiltration rates when thoroughly wetted and consisting chiefly of clay soils with a high swelling potential, soils with a permanent high water table, soils with a claypan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils have a very slow rate of water transmission.

The map uses the best available soils mapping coverage and was derived from a lookup table system linking a Hydrologic Group class to a particular soil type using the Great Soil Group (GSG) classification. Each dominant GSG has been assigned a Hydrologic Soil Group.

The classification is based on the United State's Hydrologic Soil Group system published within the National Engineering Handbook (2007).

Online Maps: This dataset can be viewed using eSPADE (NSW’s soil spatial viewer), which contains a suite of soil and landscape information including soil profile data. Many of these datasets have hot-linked soil reports. An alternative viewer is the SEED Map; an ideal way to see what other natural resources datasets (e.g. vegetation) are available for this map area.

Reference: Department of Planning, Industry and Environment, 2021, Hydrologic Soil Groups of NSW, Version 4.5, NSW Department of Planning, Industry and Environment, Parramatta.

Resource locator

Data quality statement

Name: Data quality statement

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

Description:

DQS - Hydrologic Groups of Soils in NSW

Function: download

Show on eSPADE Web Map

Name: Show on eSPADE Web Map

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

Description:

View dataset on eSPADE spatial viewer.

Function: download

Hydrologic Soil Group data package

Name: Hydrologic Soil Group data package

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

Description:

Download package: shapefiles, ESRI layer files and metadata documents.

Function: download

Land and soil information web page

Name: Land and soil information web page

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

Description:

About land and soil information in NSW - DPIE's data systems and map products.

Function: download

DPIE's Land and soil website

Name: DPIE's Land and soil website

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

Description:

Soil information, mapping & management; land degradation & geodiversity.

Function: download

ArcGIS REST Map Services

Name: ArcGIS REST Map Services

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

Description:

Connect to REST map services using ArcGIS or ArcGIS online map viewer.

Function: download

Web Map Service (WMS)

Name: Web Map Service (WMS)

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

Description:

Connect to WMS using your GIS

Function: download

KML Service

Name: KML Service

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

Description:

Download KML for use in Google Earth.

Function: download

Unique resource identifier

Code

b6af12aa-a167-4486-8092-96a047a1e13d

Presentation form

Map digital

Edition

4.5

Dataset language

English

Metadata standard

Name

ISO 19115

Edition

2016

Dataset URI

https://datasets.seed.nsw.gov.au/dataset/b6af12aa-a167-4486-8092-96a047a1e13d

Purpose

Support natural resource management and decision making. This Hydrologic Group product was first produced for NSW Office of Water to assist in mapping water recharge in various catchments within NSW.

Status

Completed

Spatial representation

Type

vector

Geometric Object Type

surface

Geometric Object Count

42351

Spatial reference system

Code identifying the spatial reference system

4283

Equivalent scale

1:None

Additional information source

Version changes

Improvements incorporated into version 4.5 include:

  • Revision of some HSG classifications for far north coast region and Cobargo area.

  • Minor adjustments to linework and attributes for the Hunter Region (version 2)

  • Updated linework and attributes for Camden Haven 1:100,000 map sheet area

  • Seven changes to the look-up conversion table between Great Soil Group and Hydrologic Soil Group classes. Alluvial Soils - medium to heavy textured, Chocolate Soils, Prairie Soils, Rendzinas and Xanthozems are now classified as having slow infiltration (class C). Solonized Brown soils and Yellow Earths now belong to the moderate infiltration class (B).

  • Minor linework edge-matching in North Coast area along with small fixups to linework and associated attributes across NSW.

GIS field name descriptions

HSG_code - Dominant hydrologic soil group (HSG) classification code

HSG_name - Dominant hydrologic soil group (HSG) classification code name

HSG_class - Combined dominant hydrologic soil group (HSG) classification code and name

HSG_desc - Dominant hydrologic soil group (HSG) classification description

Version - Version number of dataset

VersDate - Date of version completion

Classification of spatial data and services

Field Value

Topic category

Keywords

Field Value

Keyword set

keyword value

GEOSCIENCES-Hydrogeology

SOIL

WATER-Groundwater

SOIL-Physics

Originating controlled vocabulary

Title

ANZLIC Search Words

Reference date

2008-05-16

Geographic location

West bounding longitude

141.001

East bounding longitude

153.639

North bounding latitude

-37.505

South bounding latitude

-28.158

NSW Place Name

NSW

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

2011-07-12

End position

N/A

Dataset reference date

Resource maintenance

Maintenance and update frequency

As needed

Contact info

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Quality and validity

Field Value

Lineage

The best available soils datasets were sourced to provide a single (seamless where possible) layer across NSW. Datasets collated to derive this map included: * published and draft 1:100,000 soil landscape mapping [1:100,000 scale] * published and draft 1:250,000 soil landscape mapping [1:250,000 scale] * Soil and Land Resources of the Hawkesbury Nepean Catchment [1:100,000 scale]

  • Soil and Land Resources of the Liverpool Plains Catchment [1:100,000 scale]
  • Reconnaissance Soil and Land Resources of the Murray CMA Catchment [1:100,000 & 1:250,000 scale]
  • Soil Landscapes of the SCA Hydrological Catchments [1:100,000 scale]
  • Soils landscapes of the Comprehensive Coastal Assessment (Bare Point, Jervis Bay, Batemans Bay and Ulladulla) [1:100,000 scale]
  • Southern Comprehensive Regional Assessment [1:100,000 scale]
  • Northern Comprehensive Regional Assessment [1:100,000 scale]
  • Reconnaissance soil landscapes of the Namoi CMA [1:100,000 scale]
  • Reconnaissance soil landscapes of the Upper Riverina (HSHL) [1:100,000 scale]
  • Reconnaissance soil landscapes of the Border Rivers/Gwydir CMA [1:100,000 scale]
  • Brigalow Belt South Western Regional Assessment [1:100,000 scale]
  • Reconnaissance Soil Landscapes of the Upper Macleay Catchment [1:100,000 scale]
  • Upper Murrumbidgee Soil Benchmarking project [1:100,000 scale]
  • Glen Innes Data Gap Reconnaissance Soils Mapping [1:100,000 scale]
  • Soil Information for the Nyngan 1:250,000 sheet [1:250,000 scale]
  • Soil Information for the Walgett 1:250,000 sheet [1:250,000 scale]
  • Soil Information for the Gilgandra 1:250,000 sheet [1:250,000 scale]
  • Reconnaissance soil landscapes of the Riverine Plains [1:500,000 scale]
  • Land Systems of the Western Division [1:250,000-1:500,000 scale]
  • Land Systems of the Cobar Peniplain Bioregion [1:250,000-1:500,000 scale]

Each polygon was assigned a dominant soil type (Great Soil Group - GSG), from which a Hydrologic Group value was then allocated to each soil type based on their inherent soil properties. Table 1 in the data package shows the lookup table created linking soil types and hydrologic groups.

It is known that other soil types will exist in most if not all polygons, thus the map gives only a guide to the most likely Hydrologic Group to be encountered rather than an assessment using actual on-ground data that describes the likely level of intra-unit variability.

Assumptions made in the allocation of hydrologic soil group mapping include: 1. That the soil type allocated to each polygon is representative of that area. 2. That the soil type of the area has the typical characteristics/properties of Great Soil Group classification.

Constraints related to access and use

Field Value

Limitations on public access

Data Quality

Field Value

Scope

dataset

DQ Completeness Commission

Effective date

2001-01-01

DQ Completeness Omission

Effective date

2017-05-05

Explanation

All polygons were labelled with a Hydrologic Group as per the classification. An internal desktop review of the Great Soil Group soil type field has been completed for each mapping unit. Hydrologic Group mapping uses this field.

DQ Conceptual Consistency

Effective date

1900-01-01

DQ Topological Consistency

Effective date

2021-10-20

Explanation

ArcGIS was used to ensure all polygons in the shapefile is topologically correct. (cluster tolerance 0.000003 DDeg).

DQ Absolute External Positional Accuracy

Effective date

2017-05-05

Explanation

The accuracy of this map coverage varies across NSW, as map polygon boundaries were derived from many different sources and scales (see Lineage).Soil boundaries using published and draft 1:100,000 scale mapping by OEH are generally accurate to within 100 m. Soil boundaries using published or draft 1:250,000 scale, SCA and reconnaissance 1:100,000 – 1:250,000 level soil landscape mapping are generally accurate to within 250 m. Other small scale datasets (e.g., Reconnaissance 1:500,000 – 1:2,000,000) are approximate and generally accurate to within 500 – 2,000 m.

DQ Non Quantitative Attribute Correctness

Effective date

2017-05-05

Explanation

The accuracy of attributes used to derive this map coverage varies across NSW, as map polygon boundaries were derived from many different sources and map scales. A data source diagram (Figure One in data package) shows these different datasets and their quality according to the Soil confidence classification outlined below: * Good (1) - All necessary soil and landscape data is available at a catchment scale (1:100,000) to undertake the assessment of LSC and other soil thematic maps. * Fair (2) - Most soil and landscape data is available at a catchment scale (1:100,000 - 250,000) to undertake the assessment of LSC and other soil thematic maps. * Low (3) - Limited soil and landscape data is available at a reconnaissance catchment scale (1:100,000 & 1:250,000) which limits the quality of the assessment of LSC and other soil thematic maps. * Very Low (4) - Very limited soil and landscape data is available at the state scale (1:250,000 - 1:500,000) and the LSC and other soil thematic maps should be used as a guide only.

Responsible organisations

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

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Metadata on metadata

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

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Metadata date

2024-02-26T12:51:59.224168

Metadata language