Metadata : Northern Territory Groundwater - Aquifers 1:2,000,000

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Metadata Details:

Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile

Version:1.0

Date Metadata Extracted:2022-10-02

Date Metadata Last Updated:2015-06-26

Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=535D1EECEB0F528AE040CD9B21446C20

Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=535D1EECEB0F528AE040CD9B21446C20


Citation

ANZLIC Identifier:535D1EECEB0F528AE040CD9B21446C20

Title:Northern Territory Groundwater - Aquifers 1:2,000,000

Citation Date:2008-05-29

Date Type:creation

Custodian:Department of Environment, Parks and Water Security


Description

Abstract:

This spatial dataset, surveyed at a scale of 1:2,000,000, provides polygon information on the Groundwater specifically (aquifer types and yields) of the Northern Territory. The purpose of this survey was to map, describe and evaluate the water resources information for planning and management

ANZLIC Search Words:

Spatial Domain:

Bounding Coordinates:


Dataset Status

Dataset ID:English

Language:English

Character Set: Latin 1

Progress:onGoing

Maintenance and Update Frequency:asNeeded

Data Currency Start Date:2008-01-01

Data Currency End Date:2015-06-26

Access Constraint:

Download the spatial data package (contains spatial data, maps and reports) via data.nt.gov.au/

You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: creativecommons.org/licenses/by/4.0/legalcode

If you do not agree to the terms and conditions you must not use the geospatial products.

You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:

Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.


Data Quality

Lineage:The aquifer units derived from NTGS 1:250,000 scale digital geology and from scanned 1:250,000 scale geology maps. Rock types with similar aquifer properties were grouped. The boundaries were then modified using water bore information. In certain areas aquifer boundaries were taken from existing groundwater maps.

The map unit boundaries polygon collected via geographic Information system (ArcGIS). Core water resources attributes attached to map units boundary with additional attributes unique to individual surveys. The ESRI Geodatabase, MapInfo Table and Google Earth KML derived using FME Workbench. The published map is derived from the ESRI Shape using Microstation Bentley MicroStation Design (V8) software.

The core attributes information associated with the groundwater, surface water and water development dataset was derived from the original map's legend and annotations. File name NT-Groundwater-Maps_2000k_L94.dgn

Positional Accuracy:Variable across the map depending on the accuracy of the original geological data and the borehole density.

Attribute Accuracy:The accuracy of the attribute information is considered medium. The bore yield information and "aquifer types" are based on "expert knowledge.

This note is relevant to the following attributes in the dataset;
'Blank or Zero in GEO_FORM, GEO_LABEL, STDTDS_MIN, STDTDS_MAX and ACTTDS_DES indicate values not defined. '

Logical Consistency:GIS editing tools were used to rectify all overshoots and undershoots in line work. Polygon topology rules applied are must not overlap, must not have gaps and each polygon has only one label.

Completeness:This spatial dataset is regularly reviewed and updated.


Contacts

NameOrganisationPositionRolePhoneFaxEmail
Data Requests OfficerDepartment of Environment, Parks and Water SecurityGeospatial Services Branch (on behalf of department)distributordatarequests.depws@nt.gov.au

Data Dictionary

AttributeAttribute DescriptionPossible CodeCode Description
ACTFL_RNGActual river flow range measured at the end of the dry season
ACTTDS_DESThe ACTTDS_DESC field is the actual range of groundwater TDS as specified on the map
ACTYLD_RAThe ACTYLD_RA field is the actual range of bore yields in Litres/seconds, as specified on the map
AQUIFERThe AQUIFER field describes the types of pore spaces which constitute the aquifer
AQ_SCALEThe AQ_SCALE field indicates the lateral extend of groundwater flow systems
CODECode reference used for spatial data file storage (followed by survey scale)
FINISH_YRYear report published
FLOW_DESCRDescription of the river flow range measured at the end of the dry season
FL_RNG_MAXMaximum river flow range measured at the end of the dry season
FL_RNG_MINMinimum river flow range measured at the end of the dry season
GEO_FORMThe GEO_FORM field identifies the geological formation (or other geological subdivision such as group or member) derived from the latest geological map
GEO_LABELThe GEO_LABEL field is the geological label derived from the latest geology map
GIS_DATAThe spatial data is derived from either the original survey report or a compliation of several surveys and additional data
LF_DESCRThe description of the landform and soil defined by its surface form and location in the landscape
META_IDANZLIC Metadata ID
META_URLLink to the on-line metadata record
NAMEShortened name of survey (usually of report) for simple reference
NOTESExtra notes about water development options not included in the other fields
OPT_DESCRDescription of water supply preferred option
PREFD_OPTSource of water supply code
REPORTNote the full report name
REPORT_IDDepartment's Report ID
REPORT_URLLink to the on-line report
ROCK_TYPEThe ROCK_TYPE field identifies the dominant rock types that comprise the aquifer
SCALESurvey data scale for appropriate use
START_YRYear survey project commenced
STATUS_GISThe status of the landunit attribute descriptions available in the spatial dataset (ie GIS data)
STATUS_PRJThe completion status of the project
STDTDS_MAXThe STDTDS_MAX field is the maximum expected Total Dissolved Solids (TDS) of the groundwater
STDTDS_MINThe STDTDS_MIN field is the minimum expected Total Dissolved Solids (TDS) of the groundwater
STDYLD_MAXThe STDYLD_MAX field is the maximum in Litres/seconds (L/s) of the range of yield in which the majority of the bores fall
STDYLD_MINThe STDYLD_MIN field is the minimum in Litres/seconds (L/s) of the range of yield in which the majority of the bores fall
SUIT_CMTThe comments describing the suitability of the area for surface water development
SUIT_RATDetermination on the suitability for surface water development
SURVEY_IDThe SURVEY_ID field is the abbreviated name of the survey and the first (sometimes six) characters from the dataset file name
SURVEY_NMEThe SURVEY_NME is the report to which the mapping refers
VIABILITYProspect of groundwater

Supplementary Information

1) REPORT
Tickell, Steve
Groundwater - Explanatory notes to the Groundwater Map of the Northern Territory (2008).
Report No 12/2008A. Department of Natural Resources, Environment & the Arts, Northern Territory.
Available to download (pdf) from the NT Library via www.territorystories.nt.gov.au/handle/10070/228493

2) MAP
The dataset is frequently reviewed. The accompanying map product is edition July 2013.
The map may be downloaded (pdf) via www.ntlis.nt.gov.au/mpds/get_file?file_id=4580

This record maintained using the NTLIS Metadata Tool