2010 Index of Stream Condition Scores

dataset: ISC2010_SCORES
The ISC2010_SCORES dataset represents the 2010 Index of Stream Condition (ISC) overall score and subindex scores for each ISC river reach in the state of Victoria. This was the third ISC assessment providing a snapshot of river health for major rivers and streams in Victoria, using data collected over a six-year period from 2004 to 2010. The methods used in 2010 differed to the 1999 and 2004 assessments. Method changes were undertaken to strike a balance between incorporating new scientific advances while maintaining compariability of results with the 1999 and 2004 benchmarks. The ISC 2010 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, bed erosion or aggradation, 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; regeneration of overstorey species, 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). The Physical Form and Riparian Vegetation components of the ISC were mapped by the Department of Environment and Primary Industries (DEPI) in 2010-12 using LIDAR and aerial photography. Other ISC metrics were derived from other sources. Further information available at: https://www.water.vic.gov.au/waterways-and-catchments/rivers-estuaries-and-waterways/monitoring
 
Citation proposal Citation proposal
(2019)

2010 Index of Stream Condition Scores

Department of Environment, Land, Water & Planning
 

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Identifiers and Keywords

ANZLIC Id
ANZVI0803008551 
Victorian Spatial Data Library (VSDL) Schema
WATER:ISC2010_SCORES 
Jurisdiction
Victoria 
Topic category
  • Inland waters
 

Resource Constraints

Use limitation
. Access subject to custodial approval. 
Classification
Unclassified  
Creative Commons Attribution 4.0 (CC-BY)
 

Other Dataset Details

Date ( Revision )
2019-11-13
Date ( Publication )
2019-10-25T00:00:00
Status
Completed  
Purpose
This dataset communicates the 2010 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 
Maintenance and update frequency
Not planned  
Maintenance date ( Publication )
2019-10-25T00:00:00
 

Spatial

Spatial representation type
Vector  
Description
General - Victoria 
Reference system identifier
4283

N
S
E
W


 

Temporal

Begin date
2010-06-01 
End date
2012-12-01 
 

Quality

Conceptual Consistency
River Centrelines have been mapped the same way across the entire ISC2010 network and all data products from the 2010 ISC can be joined using the UniqueID_2010. Scores from the 2010 ISC can be joined to the earlier ISC1999_Scores and ISC2004_Scores data sets using the UniqueID_1999 and UniqueID_2004 attributes respectively which account for differences in the numbering of ISC reaches among years. 
Missing Data
All wetlands with an area of 1 hectare or more should be present. Monitored segments of Victorian waterways 
Attribute Quality
The UniqueID that describes the Basin, Reach and Section Number for each Section is complete for every waterway but ID numbers were not consistent with that used by past ISC benchmarks in all rivers. Scores were obtained in digital form indexed by UniqueID so are believed to be correct. 
Positional Accuracy
+/- 1m 
 

Lineage

Statement
Dataset Source: Scores obtained from the Index of Condtion website (now offline). Linework obtained from the ISC2010_RIVER_CENTRELINE_R dataset Dataset Originality: Derived 
 

Attributes

Column Name Obligation Unique Data Type Data Length Data Precision Data Scale Reference Table Owner Reference Table Name Reference Table Code Column Name Short Column Name Definition
REACHID_2010 O N NUMBER 22 10 0 REACID10 Numeric identifier of river reaches
STREAMSIDE_ZONE_SCORE O N NUMBER 22 4 0 STRSD_ZNSC Score for the Streamside Zone sub-index; scores can range 1-10; the greater the score the better the condition
AL_NO_FAMILIES O N NUMBER 22 4 0 AL_NOFAM Aquatic Life Sub-Index Number of Families Indicator; the number of macroinvertebrate families found at a site; indicator scores can range 0 - 4; the greater the score the better the condition
WATER_QUALITY_SCORE O N VARCHAR2 30 WAT_Q_SCR Score for the Water Quality sub-index; scores can range 0-10; the greater the score the better the condition
AL_SIGNAL O N NUMBER 22 4 0 AL_SIGNAL Aquatic Life Sub-Index SIGNAL Indicator; SIGNAL (Stream Invertebrate Grade Number Average) is based on the sensitivity of macroinvertebrate families to various pollutants; indicator scores can range 0 - 4; the greater the score the better the condition
SZ_STRUCTURE O N NUMBER 22 4 0 SZ_STRUCT Streamside Zone sub-index Structure Indicator; Structure considers the amount of woody vegetation in six height intervals [1.5-5m, 5-10m, 10-15m, 15-20m, 20-25m, >20m]; scores can range 1-5; the greater the score the better the condition
H_NUM_PRIORITY_WATER_ACTIONS O N NUMBER 22 4 0 H_NPRWATAC Hydrology Sub-Index Number of Priority Watering Actions
SZ_VEGETATION_OVERHANG O N NUMBER 22 4 0 SZ_VEGOVER Streamside Zone sub-index Vegetation Overhang Indicator is the amount of woody vegetation overhanging the bank toe where woody vegetation has at least 20% cover; scores can range 1-6; the greater the score the better the condition
PHYSICAL_FORM_SCORE O N NUMBER 22 4 0 PHYFR_SCR Score for the Physical Form sub-index; scores can range 1-10; the greater the score the better the condition
TOTAL_SCORE O N VARCHAR2 30 TOT_SCOR The total Index of Stream Condition score combines the scores for the five sub-indices to create a total score between zero and fifty for each reach; sub-index scores are not simply added together, a transformation known as an inverse ranking is applied; the greater the total ISC score the better the condition
WQ_EC O N NUMBER 22 4 0 WQ_EC Water Quality sub-index Electrical Conductivity Indicator; scores determined by comparing measurements of actual water quality against defined 'reference' water quality for the relevant WQ_SEPP_REGION; scores can range 0 - 4; the greater the score the better the condition
HYDROLOGY_SCORE O N NUMBER 22 4 0 HYDR_SCORE Score for the Hydrology sub-index; scores can range 0-10; the greater the score the better the condition
AL_EPT O N NUMBER 22 4 0 AL_EPT Aquatic Life Sub-Index EPT Indicator; EPT [Ephemeroptera (mayflies), Plecoptera (stoneflies), Trichoptera (caddisflies) represents three generally sensitive orders of aquatic macroinvertebrates; indicator scores can range 0 - 4; the greater the score the better the condition
H_VARIABILITY O N NUMBER 22 4 0 H_VARY Hydrology Sub-Index Variability Indicator; Variability reflects the variability in monthly streamflow; scores can range between 0 [stressed] and 10 [natural condition]
SZ_COVER_SHRUBS O N NUMBER 22 4 0 SZ_COVSHRB Streamside Zone sub-index Shrub Cover Indicator; Shrubs defined as woody vegetation 1-5 metres tall; scores can range 1-5; the greater the score the better the condition
H_HIGH_FLOW O N NUMBER 22 4 0 H_HIGHFLW Hydrology Sub-Index High Flow Indicator; High Flow measures the highest and second highest monthly flows in a year; scores can range between 0 [stressed] and 10 [natural]
H_LOW_FLOW O N NUMBER 22 4 0 H_LOW_FLOW Hydrology Sub-Index Zero Flow Indicator; Zero Flow measures the proportion of time that the stream has ceased to flow; scores can range between 0 [stressed] and 10 [natural]
WQ_TURBIDITY O N NUMBER 22 4 0 WQ_TURBID Water Quality sub-index Turbidity Indicator; scores determined by comparing measurements of actual water quality against defined 'reference' water quality for the relevant WQ_SEPP_REGION; scores can range 0 - 4; the greater the score the better the condition
AL_NUMBER_OF_SITES O N NUMBER 22 4 0 AL_NUMSITE Aquatic Life Sub-Index number of sites included in calculation
AQUATIC_LIFE_SCORE O N VARCHAR2 30 AQUA_LS Score for the Aquatic Life sub-index; scores can range 0-10; the greater the score the better the condition
PF_BANK_CONDITION O N NUMBER 22 4 0 PF_BNCOND Physical Form sub-index Bank Condition indicator; scores can range 1 - 5; the greater the score the better the condition
UNIQUEID_2010 O N VARCHAR2 50 UID_2010 Unique identifier for each record based on concatenated BASINID & REACHID_2010 i.e. XX[BASINID]_XXX[REACHID_2010]
SE_ANNO_CAD_DATA O N BLOB 4000 0 0 SEANNOCAD
WQ_YEARS_DATA O N NUMBER 22 4 0 WQ_YRSDATA Water Quality Sub-Index number of years of data used for indicator calculation
SZ_VEGETATION_WIDTH O N NUMBER 22 4 0 SZ_VEG_WID Streamside Zone sub-index Vegetation Width Indicator; Vegetation Width is the width of vegetation measured perpendicular from the toe of the bank; scores can range 1-5; the greater the score the better the condition
UNIQUEID_1999 O N VARCHAR2 50 UID_99 Unique identifier for each record based on concatenated BASINID & REACHID_1999 i.e. XX[BASINID]_XXX[REACHID_1999]
H_SEASONALITY O N NUMBER 22 4 0 H_SEASON Hydrology Sub-Index Seasonality Indicator; Seasonality is a measure of the shift in the maximum flow month and the minimum flow month between natural and current conditions; scores can range 0 [stressed] to 10 [natural]
WQ_PH O N NUMBER 22 4 0 WQ_PH Water Quality sub-index pH Indicator; scores determined by comparing measurements of actual water quality against defined 'reference' water quality for the relevant WQ_SEPP_REGION; scores can range 0 - 4; the greater the score the better the condition
WQ_GAUGE_SITE_NUMBER O N VARCHAR2 30 WQ_GASITNU Water Quality sub-index; Gauge Site Number; identification code for water quality gauges used from the Regional Water Monitoring Partnership
WQ_TOTAL_PHOSPHORUS O N NUMBER 22 4 0 WQ_TOT_P Water Quality sub-index Total Phosphorous Indicator; scores determined by comparing measurements of actual water quality against defined 'reference' water quality for the relevant WQ_SEPP_REGION; scores can range 0 - 4; the greater the score the better the condition
H_YEARS_RECORD O N NUMBER 22 4 0 H_YRSREC Hydrology Sub-Index Years of Hydrological Record; the number of years of hydrological data used in sub-index calculation; numeric integer
BASINID O N NUMBER 22 10 0 BASINID Numeric identifier of river basins
SZ_WEEDS O N NUMBER 22 4 0 SZ_WEEDS Streamside Zone sub-index Weeds Indicator is a measure of the amount of vegetation cover due to Willows and Hawthorn; scores can range 1-5; the greater the score the better the condition
WQ_NETWORK O N VARCHAR2 50 WQ_NETWORK Water Quality sub-index; the network through which data were collected; networks are the VWQMN - Victorian Water Quality Monitoring Network; Melb Water - Melbourne Water; Water Watch
SZ_LARGE_TREES O N NUMBER 22 4 0 SZ_LRGTREE Streamside Zone sub-index Large Trees Indicator; Large Trees are defined as trees that exceed a predefined height and crown area criteria; criteria vary depending on the Ecological Vegetation Class of the vegetation; scores can range 1-5; the greater the score the better the condition
UNIQUEID_2004 O N VARCHAR2 10 UID_04 Unique identifier for each record based on concatenated BASINID & REACHID_2004 i.e. XX[BASINID]_XXX[REACHID_2004]
SZ_FRAGMENTATION O N NUMBER 22 4 0 SZ_FRAGMEN Streamside Zone sub-index Fragmentation Indicator; Fragmentation measures gaps in the cover of woody vegetation; scores can range 1-5; the greater the score the better the condition
PF_INSTREAM_WOOD O N NUMBER 22 4 0 PF_INSWOD Physical Form sub-index Instream Large Wood indicator; scores can range 1-5; the greater the score the better the condition; zero denotes no reference available
H_ZERO_FLOW O N NUMBER 22 4 0 H_ZER_FL Hydrology Sub-Index Zero Flow Indicator; Zero Flow measures the proportion of time that the stream has ceased to flow; scores can range between 0 [stressed] and 10 [natural]
AL_RESULT_EXTRAPOLATED O N VARCHAR2 50 AL_RESEXTR Aquatic Life Sub-Index result extrapolated from data from other reaches
WQ_SEPP_REGION O N VARCHAR2 50 WQ_SEPPREG Water Quality sub-index; State Environmental Protection Policy [SEPP] Region; regions are Highlands, Forest A, Forest B, Cleared Hills and Coastal Plains, Murray and Western Plains
REACH_LENGTH O N NUMBER 22 38 8 REACHLENG Length of the reach in kilometres
AL_AUSRIVAS O N NUMBER 22 4 0 ALAUSRIVA1 Aquatic Life Sub-Index AUSRIVAS Indicator; The Australian River Assessment System [AUSRIVAS] predicts the macroinvertebrates that should be present in a specific stream habitat under reference conditions; this information is used to derive an observed/expected index for macroinvertebrate families; indicator scores can range 0 - 4; the greater the score the better the condition
PF_INSTREAM_BARRIERS O N NUMBER 22 4 0 PF_INSTREA Physical Form sub-index Artificial Instream Barriers indicator; scores can range 1-5; the greater the score the better the condition
OVERALL_CONDITION O N VARCHAR2 50 OVER_COND The condition classes assigned to reaches based on the TOTAL_SCORE values; Excellent = 41-50, Good = 35-40, Moderate = 24-34, Poor = 20-23, Very Poor = 0-19
RIVERNAME O N VARCHAR2 50 RIVERNAME Name of river or stream that comprises the reach
SZ_COVER_TREES O N NUMBER 22 4 0 SZ_COVTREE Streamside Zone sub-index Tree Cover Indicator; Trees defined as woody vegetation >5 metres tall; scores can range 1-5; the greater the score the better the condition
CMA O N VARCHAR2 10 0 0 CMA Catchment Management Authority region abbreviation: CCMA - Corangamite; EGCMA - East Gippsland; GBCMA - Goulburn Broken; GHCMA - Glenelg Hopkins; MCMCA - Mallee; NCCMA - North Central; NECMA - North East; PPCMA - Port Phillip; WCMA - Wimmera; WGCMA - West Gippsland
SZ_LARGE_TREES_EXCL_FROM_CALC O N VARCHAR2 20 SZ_LTEXCLU Large Trees Indicator excluded from calculation of Streamside Zone sub-index
 

About the Metadata Record

Metadata identifier
46955d9b-5e2c-59f0-a134-76157607d38f

Contact  

No information provided.
Resource Type
Dataset  
Date info ( Revision )
2019-11-13
Standard Name
ISO 19115-3:2018 
Profile Name
DELWP Profile 
Profile Version
Version 1 
Profile Date
2019-05-24  
 

Metadata Constraints

Classification
Unclassified  
 
 

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