2010 Index of Stream Condition - Bare Ground polygon features

dataset: ISC2010_BARE_GROUND
The ISC2010_BARE_GROUND polygon features represent the parts of the assessed bank face that do not have vegetation cover. The bank face is defined as the area between the Top and Toe of the bank. Areas of Bare Ground less than 5m2 have been removed so that data volume is manageable. 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.
 
Citation proposal Citation proposal
(2014)

2010 Index of Stream Condition - Bare Ground polygon features

Department of Environment, Land, Water & Planning
 

Description

Title
2010 Index of Stream Condition - Bare Ground polygon features 
Alternate title
ISC2010_BARE_GROUND 
Resource Type
Dataset  
Purpose
The ISC2010_BARE_GROUND feature is used in the assessment of the Bank Condition sub-index where the proportion of the bank face that is Bare Ground contributes to the final Bare Ground Score. 
Supplemental Information
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/ 
Status
Completed  
 
 

Temporal

Time period
2010-06-012012-12-01 
 
 

Spatial

Spatial representation type
Vector  
Horizontal Accuracy
50m  
Code
4283 
Description
General - Victoria 
N
S
E
W


 

 

Maintenance

Maintenance and update frequency
Not planned  
 
 

Format

 
 

Contacts

  Point of contact

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.
 
 

Keywords

Topic category
  • Elevation
  • Inland waters
  • Imagery base maps earth cover
  • Transportation
 
 

Resource Constraints

Classification
Unclassified  
 
 

Lineage

Statement
Dataset Source: Bare Ground has been mapped from 15cm orth-rectified Aerial Photography. Dataset Originality: Derived 
 
 

Metadata Constraints

Classification
Unclassified  
 
 

Quality

Attribute Quality
Comments
The UniqueID that describes the Basin and Reach that each bare ground polygon falls in is recorded. 
Positional Accuracy
Comments
+/- 1m 
Conceptual Consistency
Comments
Bare ground has been mapped consistently across the ISC2010 network. Polygons less than 5m2 have been removed. 
Missing Data
Comments
Bare Ground has been mapped for the entire ISC2010 network withion the bank face. 
Excess Data
 
 

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