1999 Index of Stream Condition Scores

dataset: ISC1999_SCORES
The ISC1999_SCORES dataset represents the 1999 Index of Stream Condition (ISC) overall score and subindex scores for each ISC river reach in the state of Victoria. The first ISC assessment in 1999 provided a snapshot of river health for major rivers and streams in Victoria. The 1999 ISC provides scores for five components of stream condition: (i) hydrology (based on a measure of the gross change between natural and existing monthly flows, catchment permeability and the presence of hydroelectric power stations); (ii) physical form (based on bed and bank stability, influence of artificial barriers, and instream physical habitat); (iii) streamside zone (based on types of plants; spatial extent, width, and intactness of riparian vegetation; and condition of wetlands and billabongs); (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)

1999 Index of Stream Condition Scores

Department of Environment, Land, Water & Planning
 

Description

Title
1999 Index of Stream Condition Scores 
Alternate title
ISC1999_SCORES 
Resource Type
Dataset  
Purpose
This dataset communicates the 1999 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
1999-01-011999-01-01 
 
 

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 combines the 1999 ISC scores with the 2004 ISC river line mapping that provides a consistent framework of basin and reach ID codes with a UniqueID for each assessment 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 as mapped for the 2004 ISC. Scores were obtained in digital form indexed by UniqueID so are believed to be correct . 
Positional Accuracy
Comments
+/- 70m 
Conceptual Consistency
Comments
River mapping is based on the 2004 ISC hydro line mapping. Scores from the 1999 ISC can be joined to the ISC2004_Scores and ISC2010_Scores data sets using the UniqueID_2004 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. Complete for all ISC river reaches included in the 1999 Index of Stream Condition 
Excess Data
 
 

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  Associated resources

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