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Identification

Field Value

Title

Assessment of Near Future Change in Hydrology of Wetlands in HGL of the ACT 2017 (2nd Ed)

Alternative title(s)

ACT_HGL_NFHMOC_2017

Abstract

This dataset supersedes all earlier versions of 'Assessment of Near Future Change in Hydrology of Wetlands in HGL of the ACT '. It incorporates HGL boundary and management area edits based on updated soil landscape mapping for the ACT.

The focus of this dataset is climate change impacts on hydrological parameters of wetlands in the Australian Capital Territory. It contains digital spatial data developed to assist in land management decision making in the ACT. The dataset contains an assessment of the change brought about by climate change on the groundwater, surface water and precipitation components of wetland water balances. Three selected regional climate projection ensembles from the NARCliM (NSW/ACT Regional Climate Modelling) project were used in the assessment – multimodel mean, CCCMA3.1-R2 and ECHAM5-R3. Only near-future (1990-2009 to 2020-2039) projections were considered. Each variable was considered using annual and seasonal time periods. Field names in the dataset follow the following format:

Field name = MODEL_HYDRO VARIABLE_TIME PERIOD_VARIABLE

MODEL
C – Consensus (NARCliM Multimodel Consensus Scenario)
W – Wetter (NARCliM CCCMA3.1-R2 Wetter Scenario)
D – Drier (NARCliM ECHAM5-R3 Drier Scenario)

HYDRO VARIABLE
P – Precipitation
S – Surface water
G – Groundwater

TIME PERIOD
A – Annual
S – Seasonality

VARIABLE
AC – Absolute change (mm)
PC – Percent change (%)
MC – Magnitude of change
C – Current seasonality
NF – Near future seasonality

Hydrogeological landscape (HGL) unit boundaries developed as part of the broader ACT Hydrogeological Landscapes (HGL) Framework project where used to constrain the outputs for this hydrological assessment in the ACT. In all, there are 25 HGL defined. A weighted mean was used to calculate values for each HGL unit based on the proportions of corresponding 10km gridded data from the NARCliM data set.

The outcomes suggest that the consensus scenario is the better outcome for wetlands, and despite an increase in annual volumes, the level of seasonal change in found in both the wetter and dryer scenarios poses a risk to wetlands. It is also important to note that the levels of annual water source increase predicted in the wetter scenario may also have negative impacts on wetlands.

Spatial resolution of this product is 1:50 000.

Resource locator

Data Quality Statement

Name: Data Quality Statement

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

Description:

Data quality statement for Assessment of Near Future Change in Hydrology of Wetlands in HGL of the ACT 2017 (2nd Ed)

Function: download

Download Package - ACT HGL Near Future Hydrological Magnitude of Change in Wetlands 2017

Name: Download Package - ACT HGL Near Future Hydrological Magnitude of Change in Wetlands 2017

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

Description:

Data package containing ArcGIS spatial data and reporting for hydrological magnitude of change for mean annual volume of precipitation, surface water and groundwater recharge in the near future time period in each HGL unit.

Function: download

Unique resource identifier

Code

98ca7f8e-b7de-4fca-85d1-7b0822ac35d5

Presentation form

Map digital

Edition

Second

Dataset language

English

Metadata standard

Name

ISO 19115

Edition

2016

Dataset URI

https://datasets.seed.nsw.gov.au/dataset/98ca7f8e-b7de-4fca-85d1-7b0822ac35d5

Purpose

This data package was generated for the ACT Environment and Planning Directorate as a component of the ACT Hydrogeological Landscapes (HGL) Framework project. The focus of this project was to assess impacts of climate change on wetlands and on land degradation issues related to salinity and erosion in the ACT.

Status

Completed

Spatial representation

Type

vector

Geometric Object Type

complex

Spatial reference system

Code identifying the spatial reference system

4283

Equivalent scale

1:None

Additional information source

Source datasets:
OEH:
NSW/ACT Regional Climate Modelling (NARCliM); Hydrogeological Landscapes (HGL) of the Australian Capital Territory 2017 (ACT_HGL_2017).

Classification of spatial data and services

Field Value

Topic category

Keywords

Field Value

Keyword set

keyword value

CLIMATE-AND-WEATHER-Climate-change

WATER-Wetlands

HAZARDS

LAND-Use

Originating controlled vocabulary

Title

ANZLIC Search Words

Reference date

2008-05-16

Geographic location

West bounding longitude

148.738

East bounding longitude

149.414

North bounding latitude

-35.933

South bounding latitude

-35.111

NSW Place Name

Australian Capital Territory

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

2017-04-01

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

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 hydrogeological landscape (HGL) mapping used the following base data for delineation of map units: published 1:1 million, 1:250 000 and 1:100 000 geological mapping data (polygon); published 1:100 000 soil landscape data (polygon); soil profile data from the OEH SALIS database (point); and Digital Elevation Model (DEM) for the ACT and derivative products taken from the 30 and 10 metre DEM. The published and reconnaissance level mapping were combined and rationalised to create complete hydrogeological landscape classification (map unit) coverage for the entire ACT. NARCliM associated hydrological impact assessment model 10km gridded datasets was used to assign values to each HGL Unit.

Constraints related to access and use

Field Value

Limitations on public access

Data Quality

Field Value

Scope

dataset

DQ Topological Consistency

Effective date

2017-05-19

Explanation

All polygons in the coverage are topologically correct and all polygons have been attributed. Data has been visually checked at applicable scales.

DQ Absolute External Positional Accuracy

Effective date

2017-05-19

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

2017-05-19

Explanation

All polygons are labelled with a field name consistent with the format MODEL_HYDRO VARIABLE_TIME PERIOD VARIABLE as described above. Attributes were checked as part of routine GIS capture quality assurance procedures, including a visual check of polygon tags against field data.

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

2024-02-26T15:26:55.428201

Metadata language