2004 Index of Stream Condition Scores

dataset: ISC2004_SCORES
The ISC2004_SCORES dataset represents the 2004 Index of Stream Condition (ISC) overall score and subindex scores for each ISC river reach in the state of Victoria. This was the second ISC assessment providing a snapshot of river health for major rivers and streams in Victoria, using data collected over a five-year period from 1999 to 2004. The methods used in 2004 differed to the 1999 assessment. Method changes were undertaken to strike a balance between incorporating new scientific advances while maintaining compariability of results with the 1999 benchmark. The 2004 ISC provides scores for five components of stream condition: (i) hydrology (based on change in volume and seasonality of flow from natural conditions); (ii) physical form (based on bank stability, influence of artificial barriers, and abundance and origin of coarse woody debris); (iii) streamside zone (based on types of plants; spatial extent, width, and intactness of riparian vegetation); (iv) water quality (based on an assessment of phosphorus, turbidity, electrical conductivity and pH); and (v) aquatic life (based on number of families of macroinvertebrates). Further information available at: https://www.water.vic.gov.au/waterways-and-catchments/rivers-estuaries-and-waterways/monitoring
 
Citation proposal Citation proposal
(2019)

2004 Index of Stream Condition Scores

Department of Environment, Land, Water & Planning
 

Description

Title
2004 Index of Stream Condition Scores 
Alternate title
ISC2004_SCORES 
Resource Type
Dataset  
Purpose
This dataset communicates the 2004 Index of Stream Condition overall index score, condition rating and the five ISC sub-index scores for physical form, streamside zone, hydrology, water quality, aquatic life. 
Supplemental Information
Related Documents: None 
Status
Completed  
 
 

Temporal

Time period
2004-01-012004-01-01 
 
 

Spatial

Spatial representation type
Vector  
Horizontal Accuracy
100m  
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.
 
 

Keywords

Topic category
  • Inland waters
 
 

Resource Constraints

Use limitation
Access subject to custodial approval. 
Classification
Unclassified  
 
 

Lineage

Statement
Dataset Source: Scores and linework obtained from the Index of Condtion website (now offline). This data set replaces and adds attribute data (ISC scores) to the 2004 ISC river line mapping that was previously available as the data set ISC_REACH. Dataset Originality: Derived 
 
 

Metadata Constraints

Classification
Unclassified  
 
 

Quality

Attribute Quality
Comments
The UniqueID that describes the Basin, Reach and Section Number for each waterway is complete for every Section but ID numbers were not consistent with that used by past ISC benchmarks in all rivers. UniqueID_1999, UniqueID_2004 and UniqueID_2010 are included to join this dataset to past ISC. Scores were obtained in digital form indexed by UniqueID so are believed to be correct. 
Positional Accuracy
Comments
+/- 70m 
Conceptual Consistency
Comments
Scores from the 2004 ISC can be joined to the earlier ISC1999_Scores and later ISC2010_Scores data sets using the UniqueID_1999 and UniqueID_2010 attributes respectively which account for differences in the numbering of ISC reaches among years. 
Missing Data
Comments
All wetlands with an area of 1 hectare or more should be present. Monitored segments of Victorian waterways 
Excess Data
 
 

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  Associated resources

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