Unit of competency Outline

Date retreived
22/07/2026 4:05 PM AWST

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Develop and maintain ratings

Develop and maintain ratings

Unit of competency
National Code
NWPHYD003
State Code
OAO90
TGA Status
Current
DTWD Status
Approved
Current Release Number
2.00
Current Release Date
04/02/2020
View on TGA
State Implementation and Classification
Approved Date
18/04/2019
Field of Education
010711 - Hydrology
Original Release Date
18/04/2019
Nominal Hours
100
Description
This unit involves the skills and knowledge required to develop and maintain ratings. It includes understanding relationships between variables, processes for collecting, interpreting and verifying data and producing compliant reports. It also includes applying relevant legislation, regulations, industry standards and workplace policies and procedures.This unit applies to water operators involved in the monitoring of all the elements of the water cycle and environmental impacts. Those undertaking this unit would work autonomously, leading staff, while performing complex tasks in a broad range of contexts that could be unpredictable, including remote, confined spaces, working on or near water and working at heights.No licensing, legislative or certification requirements apply to unit at the time of publication.
Notes
Elements and Performance Criteria
1 Review individual measurements
  • 1.1 Identify monitoring objectives of site and stage discharge ratings requirements
  • 1.2 Review historical discharge measurements, time series data and stage discharge rating curves and compare against expected trends
  • 1.3 Use standard processes and software to check, edit and verify field data
  • 1.4 Analyse, correct and adjust data utilising field measurements and data
2 Develop rating curves
  • 2.1 Analyse existing measurements to establish trends and compare with existing ratings
  • 2.2 Identify events at monitoring site that can affect stage discharge curve
  • 2.3 Identify sources of error in ratings
  • 2.4 Confirm and verify existing trends whilst developing rating curves
  • 2.5 Identify and define new trends whilst developing rating curves
  • 2.6 Develop rating curves in compliance with industry and stakeholder requirements
  • 2.7 Use theoretical methods to create and extend ratings
  • 2.8 Document processes and observations to provide traceability and accountability for quality assurance
  • 2.9 Apply standard formulae to create ratings for pre-calibrated measuring structures
  • 2.10 Apply quality codes to rating curves utilising workplace procedures and stakeholder requirements
3 Maintain rating curves
  • 3.1 Confirm accuracy of rating curves using recent measurements and review trends and rating applicability
  • 3.2 Adjust and maintain rating curves based on new information from data reviews, changed site conditions and additional field data
  • 3.3 Retrieve and analyse current, historic and trend data using appropriate mathematical techniques
  • 3.4 Document processes, observations and adjustments made
4 Report rating curves
  • 4.1 Prepare and store required archival data to guarantee data security
  • 4.2 Prepare and disseminate ratings according to stakeholder requirements
  • 4.3 Make recommendations for future observations
No information
No information
Replaces
State Code National Code Title Type
AVZ13 NWPHYD017 Develop and maintain ratings Unit of competency
State Code National Code Title Type
BTT8 NWP50126 Diploma of Water Industry Operations Qualification
BEG3 NWP50118 Diploma of Water Industry Operations Qualification