Northern Territory Stream Order

Index:

Metadata
Citation
Description

Dataset Status
Data Quality
Contact Information
Data Dictionary
Supplementary Information

Metadata Details:

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

Version:1.0

Date Metadata Extracted:2024-04-29

Date Metadata Last Updated:2022-04-29

Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=72F5883FB7117F2DE050CD9B21444A59

Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=72F5883FB7117F2DE050CD9B21444A59

Citation

ANZLIC Identifier:72F5883FB7117F2DE050CD9B21444A59

Title: Northern Territory Stream Order

Citation Date:2018-08-09

Date Type:revision

Custodian:Department of Environment, Parks and Water Security

Description

Abstract:

This polyline spatial dataset displays Stream Order over the Northern Territory using the Strahler hierarchical classification from the source (Stream Order 1) then downstream to the largest stream (Stream Order 7). A waterway with no tributaries is a first-order stream. Two first-order streams join to form a second-order stream and two second-order streams join to form a third-order stream and so on.

The Stream Network line segments describe where water would flow according to a hydrological enforced 9 second digital elevation model at scale 1:250,000.
The data was sourced from the Australian surface water hydrography geofabric data supplied by Commonwealth of Australia (Bureau of Meteorology).
The Stream Order information were sourced from Commonwealth of Australia (Geoscience Australia) using a lookup table that was joined to the stream network.

ANZLIC Search Words:

geoscientificInformation

inlandWaters

Spatial Domain:

Bounding Coordinates:

North Bounding Coordinate:-10

South Bounding Coordinate:-26

East Bounding Coordinate:138

West Bounding Coordinate:129

Dataset Status

Dataset ID:

Language:English

Character Set: Latin 1

Progress:completed

Maintenance and Update Frequency:notPlanned

Data Currency Start Date:2012-01-01

Data Currency End Date:2018-09-10

Access Constraint:Download the spatial data package via data.nt.gov.au/

You are licensed to use the 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:

This data was modified by the Department of Environment, Parks and Water Security and originally supplied by (Copyright) Commonwealth of Australia (Bureau of Meteorology) 2014 and (Copyright) Commonwealth of Australia (Geoscience Australia).

Data Quality

Lineage:Original data source 1: Geofabric V2.1.1 SH_Network.GDB - Feature class AHGFNetworkStream
Original data source 2: National Environmental Stream Attributes - Terrain look up table

- The Australian network stream dataset was clipped to an extent approximately 75km beyond the Northern Territory border.
- The Terrain look up table was joined to the Stream Network dataset using the field SEGMENTNO.
- This table also contains the field STRAHLER. The integers 1 to 7 are allocated to each segment number.
- The output feature class NT_STREAM_ORDER has a smaller set of attributes to reduce the file size. (see Data Dictionary)

Positional Accuracy:The Stream Network line segments describe where water would flow according to a hydrological enforced 9 second digital elevation model at scale 1:250,000.

Attribute Accuracy:The complete set of attributes were not stored in the output dataset.
The truncated set of attributes was intended to reduce the file size and are described in the Data Dictionary.

Fields kept from the Stream Network dataset: Name, Hierarchy, Perennial, Segment No, SrcFType.
Field kept from the Terrain look up table: Segment No, Strahler

Logical Consistency:Refer to original datasets. (details in Supplementary Information)

Completeness:Complete

Contacts

Name Organisation Position Role Phone Fax Email

Data Requests Officer Department of Environment, Parks and Water Security Geospatial Services Branch (on behalf of department) distributor datarequests.depws@nt.gov.au

Name	Organisation	Position	Role	Phone	Fax	Email
Data Requests Officer	Department of Environment, Parks and Water Security	Geospatial Services Branch (on behalf of department)	distributor			datarequests.depws@nt.gov.au

Data Dictionary

Attribute Attribute Description Possible Code Code Description

1. Name The name of the water feature. The original dataset uses capital letters. The names were converted to Title Case for map display purposes.

2. St_Order Alias: Stream Order
The Strahler Stream Order was defined by the Terrain look up table supplied with the Environmental Stream Attributes.
A waterway with no tributaries is a first-order stream. Two first-order streams join to form a second-order stream and two second-order streams join to form a third-order stream and so on. The Northern Territory government uses a simple 3 tiered description for the 7 stream orders. 1, 2 Northern Territory Government Land Clearing Guidelines refer to Stream Orders 1 and 2 as "Intermittent Streams".

3, 4 Northern Territory Government Land Clearing Guidelines refer to Stream Orders 3 and 4 as "Creeks".

5, 6, 7 Northern Territory Government Land Clearing Guidelines refer to Stream Orders 1 and 2 as "Rivers".

3. Hierarchy Describes the importance of the associated water feature. Each stream segment is described as either Major, Minor or Not Applicable.

4. Perennial Each stream segment is described as either Perennial, Non Perennial or Not Applicable.

5. SegmentNo The Segment Number is a unique identifier for each stream segment and was used to join the Stream Network to the Terrain Look up table.

Attribute	Attribute Description	Possible Code	Code Description
1. Name	The name of the water feature. The original dataset uses capital letters. The names were converted to Title Case for map display purposes.
2. St_Order	Alias: Stream Order The Strahler Stream Order was defined by the Terrain look up table supplied with the Environmental Stream Attributes. A waterway with no tributaries is a first-order stream. Two first-order streams join to form a second-order stream and two second-order streams join to form a third-order stream and so on. The Northern Territory government uses a simple 3 tiered description for the 7 stream orders.	1, 2	Northern Territory Government Land Clearing Guidelines refer to Stream Orders 1 and 2 as "Intermittent Streams".
		3, 4	Northern Territory Government Land Clearing Guidelines refer to Stream Orders 3 and 4 as "Creeks".
		5, 6, 7	Northern Territory Government Land Clearing Guidelines refer to Stream Orders 1 and 2 as "Rivers".

3. Hierarchy	Describes the importance of the associated water feature. Each stream segment is described as either Major, Minor or Not Applicable.
4. Perennial	Each stream segment is described as either Perennial, Non Perennial or Not Applicable.
5. SegmentNo	The Segment Number is a unique identifier for each stream segment and was used to join the Stream Network to the Terrain Look up table.

Supplementary Information

Download the original data and associated information via:

Geofabric V2.1.1 SH_Network.GDB - Feature class AHGFNetworkStream
Bureau of Meterology
Download data from www.bom.gov.au/water/geofabric/

National Environmental Stream Attributes V1.1.5 - Terrain look up table
Geoscience Australia
Download data from www.ga.gov.au/scientific-topics/national-location-information/national-surface-water-information

Information about the Northern Territory Government Land Clearing Guidelines
denr.nt.gov.au/land-resource-management/rangelands/guidelines-and-management-plans/land-clearing-guidelines-and-management-plans

This record maintained using the NTLIS Metadata Tool

Metadata : Northern Territory Stream Order