Index of Wetland Condition Scores

dataset: IWC2010_SCORES
The Index of Wetland Condition (IWC) is a standard method developed in Victoria for rapid assessment of wetland condition. It is based on the state of the biological, physical and chemical components of the wetland ecosystem and their interactions. The method aims to differentiate natural from human induced changes in wetland condition and assist in management decisions. It has six weighted sub-indices based on the characteristics that define wetlands: wetland catchment; physical form; hydrology; soils; water properties; and biota. It is primarily a site/habitat based assessment (individual wetland scale), some measures require wetland catchment scale assessment. This data set contains the results of 389 IWC assessments conducted between January 2009 and April 2011 to provide a snapshot of the condition of Victoria's wetlands.
 
Citation proposal Citation proposal
(2020)

Index of Wetland Condition Scores

Department of Environment, Land, Water & Planning
 

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Identifiers and Keywords

ANZLIC Id
ANZVI0803008550 
Victorian Spatial Data Library (VSDL) Schema
WATER:IWC2010_SCORES 
Jurisdiction
Victoria 
Topic category
  • Inland waters
 

Resource Constraints

Use limitation
Departmental access. Access subject to custodial approval. 
Classification
Limited Distribution  
 

Other Dataset Details

Date ( Revision )
2020-09-25
Date ( Publication )
2019-11-15T01:18:04
Status
Completed  
Purpose
The IWC is used principally to assess wetland condition. This data set communicates the results of 389 IWC assessments conducted between January 2009 and April 2011 as part of the then Department of Environment and Primary Industries (DEPI) 2010 initiative to provide a snapshot of the condition of Victoria's wetlands. 
Supplemental Information
Related Documents: None 
Maintenance and update frequency
Not planned  
Maintenance date ( Publication )
2019-11-15T01:18:04
 

Spatial

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

N
S
E
W


 

Temporal

Begin date
2009-01-01 
End date
2011-04-04 
 

Resolution

Horizontal Accuracy
100m  
 

Quality

Conceptual Consistency
Each assessment includes the assessment date, wetland ID and resulting IWC scores. The scores are linked to the wetland boundary mapping (refer WETLANDS_CURRENT dataset) via using the ID number which is a concatenation of the Victorian map sheet in which the wetland is located and the unique Wetland number. This data set only includes the wetland boundaries for wetlands in which an assessment was made. 
Missing Data
All wetlands with an area of 1 hectare or more should be present. Monitored segments of Victorian waterways 
Attribute Quality
IWC scores are derived from field assessments and are considered accurate for the date and time of each assessment. 
Positional Accuracy
+/- 50m 
 

Lineage

Statement
Dataset Source: IWC Scores were obtained from the Index of Condition website (now offline). Wetland boundaries obtained from DELWP's WETLAND_CURRENT dataset and aligned using the ID number which is a concatenation of the Victorian map sheet in which the wetland is located and the individual Wetland number. Dataset Originality: Primary & 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
GRAZING_BY_STOCK_AND_FERALS O N VARCHAR2 5 GRAZ_BY_AN
BIOTA_OVERALL_CONDITION O N VARCHAR2 30 BIOALLCOND
IS_WATER_TO_A_SALINE_WETLAND O N VARCHAR2 5 IS_H2O_SAL
IS_RAMSAR_SITE O N VARCHAR2 5 ISRAMSAR
ALTERS_SALINITY_SCORE O N NUMBER 22 10 0 ALTSALSC
WITHIN_250M_OF_SALINITY_DISCH O N VARCHAR2 5 WIN250SAL
NAT_WATER_INLETS_OBSTRUCTION O N VARCHAR2 5 NAT_H2OINL
GROUNDWATER O N VARCHAR2 2 GRNDH2O
HUMAN_TRAMPLING O N VARCHAR2 5 HUMANTRMPL
RUNOFF_OF_NUTRIENTS_TO O N VARCHAR2 5 RUNOFF
URBAN_RUNOFF_DRAINS_TO O N VARCHAR2 5 URBRUNOF
RAMSAR_NAME O N VARCHAR2 80 RAMS_NME
NUTRIENT_ENRICHMENT_SCORE O N NUMBER 22 10 0 NUTR_ENSCR
DIWA_SITE_NAME O N VARCHAR2 80 DIWA_SINME
NUMBER_ O N NUMBER 22 10 0 NUMBER_
HYDROLOGY_CONDITION O N VARCHAR2 20 HYDROCOND
SE_ANNO_CAD_DATA O N BLOB 4000 SEANNOCAD
ARTIFICIAL_CHANNEL O N VARCHAR2 2 ARTCHANEL
BUFFER_CONTINUITY O N NUMBER 22 38 8 BUFFCONT
AQUACULTURE O N VARCHAR2 5 AQUACULT
AVERAGE_BUFFER_WIDTH O N NUMBER 22 38 8 AV_BUFWIDT
OVERALL_CONDITION O N VARCHAR2 30 OVER_COND
CARP_MUMBLING O N VARCHAR2 5 CARP_MUMB
CHANGE_IN_BATHYMETRY O N NUMBER 22 38 8 CHIN_BATHY
RIVER_OR_STREAM O N VARCHAR2 2 RIV_STRE
WETLAND_CATCHMENT_SCORE O N NUMBER 22 10 0 WETCATSC
WATER_PROPERTIES_CONDITION O N VARCHAR2 15 H2OPROP
CHANGE_IN_EXTENT O N NUMBER 22 38 8 CHIN_EXT
PUGGING_BY_STOCK_OR_FERALS O N VARCHAR2 5 PUG_STFER
PHYSICAL_FORM_CONDITION O N VARCHAR2 15 PHYSFORCON
ACT_CHANGES_WAT_SOURCE_FLOW O N VARCHAR2 5 ACCHWASRFL
WETLAND O N NUMBER 22 10 0 WETLAND
EXTRACTS_WATER_DIRECTLY_FROM O N VARCHAR2 5 EXTRH2O
HYDROLOGY_SCORE O N NUMBER 22 10 0 HYDR_SCORE
NO_ACTIVITIES_ENRICH_NUTRIENT O N VARCHAR2 5 NOACTENRI
ACTS_DECREASE_GROUNDWAT_HGHT O N VARCHAR2 5 ADECGRWATH
MAPSHEET O N NUMBER 22 5 0 MAPSHEET
OVERALL_SCORE O N NUMBER 22 10 0 OVERSCOR
WETLAND_PHASE O N VARCHAR2 30 WETLPHSE
EXCAVATION_OF_THE_WETLAND_BED O N VARCHAR2 5 EXC_WETLBE
NAT_WATER_OUTLETS_OBSTRUCTION O N VARCHAR2 5 NAT_H2OOUT
WATER_PROPERTIES_SCORE O N NUMBER 22 10 0 H2OPROPSC
ID O N NUMBER 22 38 8 ID
PHYSICAL_FORM_SCORE O N NUMBER 22 10 0 PHYFR_SCR
SURFACE_RUNOFF O N VARCHAR2 2 SURFRUN
ASSESSMENT_VERSION O N VARCHAR2 15 ASSESVERS
SOILS_CONDITION O N VARCHAR2 15 SOILSCON
ADJACENT_LAND_USE_INTENSITY O N NUMBER 22 38 8 ADJLUINT
OTHER O N VARCHAR2 100 OTHER
LANDFORMING O N VARCHAR2 5 LANDFORM
DISPOSAL_OF_WATER_INTO O N VARCHAR2 5 DISP_WATER
DRAINAGE_OF_WATER_FROM O N VARCHAR2 5 DRN_H2O_FR
ASSESSMENT_DATE O N DATE 7 ASSESS_DT
IS_DIWA_SITE O N VARCHAR2 5 IS_DIWAST
SOILS_SCORE O N NUMBER 22 10 0 SOILSCOR
DISCHARGES_NUTRIENTS_TO O N VARCHAR2 5 DISC_NUTRI
NAME O N VARCHAR2 50 NAME
NO_OF_YEARS_DRY O N VARCHAR2 10 NUMYRDRY
CULTIVATION O N VARCHAR2 5 CULTIVATE
DRIVING_OF_VEHICLES_IN O N VARCHAR2 5 DR_OF_VEH
ANY_EVIDENCE_SALINITY_INCR O N VARCHAR2 5 ANYEVSALIN
BASIN_ID O N NUMBER 22 5 0 BASIN_ID
BIOTA_OVERALL_SCORE O N NUMBER 22 10 0 BIOALSCOR
CMA_CODE O N VARCHAR2 10 CMA_CODE
WETLAND_CATCHMENT_CONDITION O N VARCHAR2 15 WETLCATCON
 

About the Metadata Record

Metadata identifier
c1fa0d48-4050-5a58-9ec3-e2b69ccb36f3

Contact  

No information provided.
Resource Type
Dataset  
Date info ( Revision )
2020-09-25
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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