Index of Estuarine Condition Estuarine Flow Barriers

dataset: IEC2021_BARRIERS
IEC2021_BARRIERS indicates locations of estuarine barriers (partial and complete) that were used in the 2021 Index of Estuarine Condition. A combination of existing data sources and field data collection was used to identify the existence of artificial barriers and whether these structures represented partial or complete barriers (Pope et al. 2015). Partial barriers were those that were considered to allow limited or intermittent movement of biota. Complete barriers were those that represented an absolute and permanent barrier to biota. Where artificial barriers were identified, the most likely location of the natural (pre-1750) inland extent (length) of the estuary was derived from historical documents, field observations, elevation data and geomorphology to provide a `natural estuary length¿.
 
Citation proposal Citation proposal
(2021)

Index of Estuarine Condition Estuarine Flow Barriers

Department of Energy, Environment and Climate Action
 

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Identifiers and Keywords

ANZLIC Id
ANZVI0803008718 
Victorian Spatial Data Library (VSDL) Schema
WATER:IEC2021_BARRIERS 
Jurisdiction
Victoria 
Topic category
  • Inland waters
  • Oceans
 

Resource Constraints

Classification
Unclassified  
Creative Commons Attribution 4.0 (CC-BY)
 

Other Dataset Details

Date ( Revision )
2021-10-12
Date ( Publication )
2021-09-04T01:53:38
Status
Completed  
Purpose
Component of the Index for Estuarine Condition 
Supplemental Information
Related Documents: None 
Maintenance and update frequency
Not planned  
Maintenance date ( Publication )
2021-09-04T01:53:38
 

Spatial

Spatial representation type
Vector  
Description
General - Victoria 
Reference system identifier
4283

N
S
E
W


 

Temporal

Begin date
2017-01-24 
End date
2019-02-08 
 

Quality

Missing Data
Statewide Completeness Verification: - 
Excess Data
- 
Positional Accuracy
Points are locations of verified or potential barriers to natural estuarine flow processes. Some points are from direct field observations or high resolution aerial imagery 
 

Lineage

Statement
Dataset Source: Field sub sampling and digitisation from high resolution aerial imagery conducted by the Arthur Rylah Institute. Dataset Originality: Primary & Derived 
 

Attributes

Column Name Obligation Unique Data Type Data Length Data Precision Data Scale Reference Table Owner Reference Table Name Reference Table Code Column Name Short Column Name Definition
ESTUARY O N VARCHAR2 150 ESTUARY
STRUCTURE O N VARCHAR2 100 STRUCTURE
TYPE O N VARCHAR2 200 TYPE
ALT_NAME O N VARCHAR2 150 ALT_NAME
DATE_CREATED O N DATE 7 DATE_CR
SE_ANNO_CAD_DATA O N BLOB 4000 SEANNOCAD
EUID O N NUMBER 22 5 0 EUID
EZY_NAME O N VARCHAR2 150 EZY_NAME
 

About the Metadata Record

Metadata identifier
urn:uuid / 3b543810-fef1-58c0-b836-582ee35e527f

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Resource Type
Dataset  
Date info ( Creation )
2025-07-16T15:27:37
Date info ( Revision )
2025-11-25T14:31:20
Standard Name
ISO 19115-3:2018 
Profile Name
DELWP Profile 
Profile Version
Version 1 
Profile Date
2019-05-24  
 

Metadata Constraints

Classification
Unclassified  
 
 

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