Index of Estuarine Condition Estuarine Flow Barriers
Anzlic ID:
ANZVI0803008718
Custodian:
Abstract:
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identified, the most likely location of the natural (pre-1750) inland extent (length) of the estuary was derived from historical documents, field observations, elevation data and geomorphology to provide a `natural estuary length¿.
Search Words:
Inland waters
,
Oceans
Publication Date:
04 September 2021
Dataset Status:
Statewide
Completeness Verification: -
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
Data Existence:
Metadata Name
Descriptions
Resource Name:
IEC2021_BARRIERS
Title:
Index of Estuarine Condition Estuarine Flow Barriers
Anzlic ID:
ANZVI0803008718
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
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identified, the most likely location of the natural (pre-1750) inland extent (length) of the estuary was derived from historical documents, field observations, elevation data and geomorphology to provide a `natural estuary length¿.
Search Words:
Inland waters
,
Oceans
Purpose:
Component of the Index for Estuarine Condition
Geographic Extent Polygon:
Geographic Bounding Box:
-34
141
150
-39
Beginning to Ending Date:
2017-01-24 - 2019-02-08
Maintainence and Update Frequency:
Not planned
Stored Data Format:
Available Format(s) Types:
Digital
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
Attribute Accuracy:
Logical Consistency:
Data Source:
Dataset Source: Field sub sampling and digitisation from high resolution aerial imagery conducted by the Arthur Rylah Institute.
Dataset Originality: Primary & Derived
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