2010 Index of Stream Condition - Channel Transect line features
Anzlic ID:
ANZVI0803005114
Custodian:
Abstract:
The ISC2010_CHANNEL_TRANSECTS are line features created perpendicular to the river centreline that span the width of ISC2010_BANKFULL_WIDTH polygons. Channel Transects occur every 25m along all reaches. Every fourth Channel Transect coicides with a 100m River Section break. Channel Transects are used to assess and record cross sectional statistics. Channel Transects are represented as two dimensional lines but contain three dimensional cross sectional attributes such as channel area and volume.
River condition in Victoria is assessed every 5 years using the Index of Stream Condition (ISC). The Department of Environment and Primary Industries (DEPI) developed a methodology to assess the Physical Form and Riparian Vegetation components of the ISC using remote sensing data, specifically LIDAR and aerial photography.
A State Wide mapping project was undertaken in 2010-13 to accurately map the Physical Form and Riparian Vegetation metrics of the ISC . Other ISC metrics were not assessed in the project and were derived from other sources.
The Physical Form and Riparian Vegetation Metric products are a combination of mapped Vector and Raster data as well as Tabular Summary Statistics about the mapped features. In the context of the project, the term Metrics is used to refer to both the mapped features and the summary statistics.
Remote sensing data used includes 15cm true colour and infra-red aerial photography and four return multi-pulse LiDAR data. This source data was used to derive a variety of Raster data sets including Digital Terrain Models, Slope, Vegetation Height and Vegetation Cover. The Digital Terrain and Slope rasters were used to map Physical Form metrics including Stream Bed, Top of Bank and River Centre Lines while the Vegetation Height and Cover rasters were used to map the Riparian Vegetation metrics.
The Project Report "Aerial Remote Sensing for Physical Channel Form and Riparian Vegetation Mapping" describes the remote sensing and mapping approach used to create this data set.
Channel Transects have been created along the entire ISC2010 netwrok.
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
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License Text
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Data Existence:
Metadata Name
Descriptions
Resource Name:
ISC2010_CHANNEL_TRANSECTS
Title:
2010 Index of Stream Condition - Channel Transect line features
Anzlic ID:
ANZVI0803005114
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
The ISC2010_CHANNEL_TRANSECTS are line features created perpendicular to the river centreline that span the width of ISC2010_BANKFULL_WIDTH polygons. Channel Transects occur every 25m along all reaches. Every fourth Channel Transect coicides with a 100m River Section break. Channel Transects are used to assess and record cross sectional statistics. Channel Transects are represented as two dimensional lines but contain three dimensional cross sectional attributes such as channel area and volume.
River condition in Victoria is assessed every 5 years using the Index of Stream Condition (ISC). The Department of Environment and Primary Industries (DEPI) developed a methodology to assess the Physical Form and Riparian Vegetation components of the ISC using remote sensing data, specifically LIDAR and aerial photography.
A State Wide mapping project was undertaken in 2010-13 to accurately map the Physical Form and Riparian Vegetation metrics of the ISC . Other ISC metrics were not assessed in the project and were derived from other sources.
The Physical Form and Riparian Vegetation Metric products are a combination of mapped Vector and Raster data as well as Tabular Summary Statistics about the mapped features. In the context of the project, the term Metrics is used to refer to both the mapped features and the summary statistics.
Remote sensing data used includes 15cm true colour and infra-red aerial photography and four return multi-pulse LiDAR data. This source data was used to derive a variety of Raster data sets including Digital Terrain Models, Slope, Vegetation Height and Vegetation Cover. The Digital Terrain and Slope rasters were used to map Physical Form metrics including Stream Bed, Top of Bank and River Centre Lines while the Vegetation Height and Cover rasters were used to map the Riparian Vegetation metrics.
The Project Report "Aerial Remote Sensing for Physical Channel Form and Riparian Vegetation Mapping" describes the remote sensing and mapping approach used to create this data set.
The ISC2010_CHANNEL_TRANSECTS are used to record channel cross sectional statistics for each transect. These are used to construct statistics at the 100m Section and full Reach levels. Channel Transects are also used to define the 100m River Centreline Section breaks in the ISC2010_RIVER_CENTRELINE_S feature and are the seed vector for the ISC2010_VEGETATION_WIDTH lines.
Geographic Extent Polygon:
Geographic Bounding Box:
-34
141
150
-39
Beginning to Ending Date:
2010-06-01 - 2012-12-01
Maintainence and Update Frequency:
Not planned
Stored Data Format:
Available Format(s) Types:
DIGITAL
Positional Accuracy:
+/- 1m
Attribute Accuracy:
Each Transect is uniquely identified and recorded with reference to the Basin and Reach ID that it belongs to.
Logical Consistency:
Channel Transects have been created the same way across the entire ISC2010 network.
Data Source:
Dataset Source: Channel Transects are programatically generated using ISC2010_RIVER_CENTRELINE_R as the seed data set.
Dataset Originality: Derived
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2014-02-04
Additional Metadata:
Related Documents: None
The Product Description "ISC2010 Remote Sensing Metrics" describes the remote sensing and mapping approach used to create this and all other ISC2010 data sets.
http://ics.water.vic.gov.au/ics/
http://ics.water.vic.gov.au/ics/
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