Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0803005746 

Victorian Spatial Data Library (VSDL) Schema

FIRE:HAZ_TREE_RISK 

Jurisdiction

Victoria 

Topic category

• Environment

Resource Constraints

Use limitation

Departmental for the trial and development phase. Eventually this dataset is proposed to be available on eMap for open access for all emergency services that have access to eMap. 21/09/15 - Dataset uploaded and available on eMap. 

Classification

Unclassified  

Other Dataset Details

Date ( Revision )

2022-12-12

Date ( Publication )

2022-12-15T01:02:10

Status

Completed  

Purpose

This dataset displays Hazardous Tree (HT) risk across the Victorian public land estate. Areas of public land have been allocated to one of four hazardous tree risk categories (1 = Diminished, 3 = High, 4 = Very High) based on the following equation: Eucalypt ecological fire tolerance level + Fire Severity = Hazardous Tree Risk Rating. 

Supplemental Information

Related Documents: None NOT KNOWN 

Maintenance and update frequency

Unknown  

Maintenance date ( Publication )

2022-12-15T01:02:10

Spatial

Spatial representation type

Vector  

Description

General - Victoria 

Reference system identifier

4283

N

S

E

W

Temporal

Begin date

2017-01-01 

End date

2018-12-30 

Resolution

Horizontal Accuracy

25m  

Quality

Conceptual Consistency

Source attributes are logically consistent. 

Missing Data

Coverage is for the public land estate of Victoria Completeness Verification: This data has not been ground-truthed or verified. As this is a derived and modelled dataset, accuracy of this data is depending on the accuracy of input datasets (SFRI, SVEG, fire severity, LASTLOG25, PLMGEN) and also robustness of methodology. It should also be noted that there are some factors which are known to cause hazardous trees on a local scale (e.g. disease, age, drought, and other weather events) that will not be detected in this approach. 

Excess Data

Final data is in vector format - classified in the following format 1 = Diminished, 3 = High, 4 = Very High 

Attribute Quality

Source data attributes logical and consistent. 

Positional Accuracy

Source data accurate to approximately 1:25000 (fire sev and sfri) and 1:100000(sveg). The data was originally compiled as an ESRI grid dataset with 20m cell size. 

Lineage

Description

union fire severity with foresty data 

Statement

Dataset Source: fire severity data, EVC and SFRI forestry data Built in 2014, using in the development of this dataset BLD_FKA_EASTVIC_2014 as well as work completed by Hans Van Elmpt and Frazer Wilson in 2010/11 BLD_FIRE_KILLED_ASH_2003_TO_2009 was also used in the later version which was built upon by A Cheesman in 2014. Several iterations have been done in 2016 and now in 2022. 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
RISK_LEVEL	O	N	VARCHAR2	10						RISK_LEVEL
SE_ANNO_CAD_DATA	O	N	BLOB	4000						SEANNOCAD
SHAPESTLENGTH	O	N	NUMBER	22	38	8				SHPSTLNTH
ID	O	N	NUMBER	22	38	8				ID
SHAPESTAREA	O	N	NUMBER	22	38	8				SHPSTAR
SHAPE_STAREA__	O	N	NUMBER	22	38	8				SHARE_AREA
SHAPE_STLENGTH__	O	N	NUMBER	22	38	8				SHAPE_LEN
GRIDCODE	O	N	NUMBER	22	38	8				GRIDCODE

About the Metadata Record

Metadata identifier

urn:uuid / 07a87837-74f6-5cdb-b709-6568664a0653