2010 Index of Stream Condition - River Centre Lines at the Reach Level

dataset: ISC2010_RIVER_CENTRELINES_R
The ISC2010_RIVER_CENTRELINE_R line features represent the set of river reaches that are assessed in the 2010 ISC. The line features represents the middle of the river channel and have been defined as the midpoint of the ISC2010_STREAMBED_WIDTH polygon feature. This data set represents a re-alignment of the ISC2004 River Reaches. River centre lines have been connected at Reach ends and flow direction has been enforced. Each Reach has Metric Statistics assessed and recorded in Reach Summary (_R) Tabes. The ISC2010_RIVER_CENTRELINE_R is designed to JOIN to all ISC2010_<METRIC>_R tables. The ISC2010_RIVER_CENTRELINE_REACH acts as the spatial key to which all other Physical Form and Riparian Vegetation reach metric statistics can be linked. 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 - River Centre Lines at the Reach Level

Department of Environment, Land, Water & Planning

Details

Contacts

Cited responsible party

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Cited responsible party

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  Point of contact

 

Identifiers and Keywords

ANZLIC Id
ANZVI0803005098 
Victorian Spatial Data Library (VSDL) Schema
WATER:ISC2010_RIVER_CENTRELINES_R 
Jurisdiction
Victoria 
Topic category
  • Elevation
  • Inland waters
  • Imagery base maps earth cover
  • Transportation
 

Constraints

Classification
Unclassified 
Creative Commons Attribution 4.0 (CC-BY)
 

Other Dataset Details

Date (Revision)
2014-02-04
Date (Publication)
2018-11-19T11:31:05
Status
Completed 
Purpose
The ISC2010_RIVER_CENTRELINE_REACH defines the river unit for which ISC scoring is reported. Every Reach is uniquely identified by a combination of Basin and Reach number in the "UniqueID" attribute which can be used to join any of the tabular metric summary statistics. As such, the ISC2010_RIVER_CENTRELINE_REACH is the spatial key for all metrics. 
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/ 
Maintenance and update frequency
Not planned 
Maintenance date (Publication)
2018-11-19T11:31:05
 

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 
 

Resolution

Horizontal Accuracy
50m 
 

Quality

Conceptual Consistency
River Centrelines have been mapped the same way across the entire ISC2010 network. Water storage connectors are attributed with a Reach number of -99. The ISC2010_RIVER_CENTRELINE_R is designed to JOIN to all ISC2010_<METRIC>_R tables. 
Missing Data
River Centrelines have been mapped for the entire ISC2010 network. River centrelines have been connected at reach ends and flow direction has been enforced. 
Attribute Quality
The UniqueID that describes the Basin and Reach Number for each Reach is complete. The UniqueID will facilitate a join with all 2010 ISC Reach Metric Summary Tables (ISC2010_<METRIC>_R). 
Positional Accuracy
+/- 1m 
 

Lineage

Statement
Dataset Source: The centre line has been automatically generated as the midpoint of the ISC2010_Stream_Bed_Width polygon feature. The source data for Stream Bed Width is LiDAR derived raster products including Slope and DTM. 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
LT_SCORE O N NUMBER 22 4 0 LT_SCORE
ST2_SCORE O N NUMBER 22 4 0 ST2_SCORE
VO_SCORE O N NUMBER 22 4 0 VO_SCORE
ST1_TREES_SCORE O N NUMBER 22 4 0 ST1TSCORE
FRAG_SCORE O N NUMBER 22 4 0 FRAG_SCORE
RIVERNAME O N VARCHAR2 50 RIVERNAME
VW_SCORE O N NUMBER 22 4 0 VW_SCORE
BG_SCORE O N NUMBER 22 4 0 BG_SCORE
REACH_LENGTH O N NUMBER 22 38 8 REACHLENG
REACHID O N NUMBER 22 10 0 REACHID
CATCHMENT O N VARCHAR2 50 CATCHMENT
WB_SCORE O N NUMBER 22 4 0 WB_SCORE
ANABRANCHID O N NUMBER 22 10 0 ANABRNCHID
BC_SCORE O N NUMBER 22 4 0 BC_SCORE
UNIQUEID O N VARCHAR2 50 UNIQUEID
BASINID O N NUMBER 22 10 0 BASINID
ST1_SHRUBS_SCORE O N NUMBER 22 4 0 ST1SSCORE
 

About the Metadata Record

Metadata identifier
urn:uuid / ef54feb4-0739-5947-a93f-7ca5c6e68c9c

Resource Type
Dataset 
Date info (Creation)
Date info (Revision)
2014-02-04
Standard Name
ISO 19115-3:2018 
Profile Name
DELWP Profile 
Profile Version
Version 1 
Profile Date
2019-05-24 
 

Metadata Constraints

Classification
Unclassified 
 
 

Overviews

Graphic Overview of Data Footprint


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