Unit of competency Outline

Date retreived
22/07/2026 1:57 PM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Develop and maintain ratings

Develop and maintain ratings

Unit of competency
National Code
NWPHYD017
State Code
AVZ13
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
07/12/2015
State Implementation and Classification
Approved Date
15/04/2016
Field of Education
010711 - Hydrology
Original Release Date
15/04/2016
Nominal Hours
100
Description
This unit of competency describes the skills required to establish relationships between variables including stage versus flow and conductivity versus salinity. This unit requires understanding of the processes required to collect data, interpret data, verify data and produce clear reports that conform with organisational and industry standards.This unit applies to hydrographers employed by the water industry and water operators involved in the monitoring of all the elements of the water cycle and their impact on the related environment.The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to, particularly those related to WHS, Bureau of Meteorology, World Meteorological Organisation and Australian Standards.Those undertaking this unit would work autonomously, supervising staff, while performing complex tasks in a broad range of contexts, that could be unpredictable, including remote, confined spaces, near water and/or 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 Correct and adjust inconsistent 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 Prepare rating curves based on measurements, agreed formulae and mathematical techniques, under a variety of hydraulic conditions and control types.
  • 2.5 Confirm and verify existing trend or define new trend.
  • 2.6 Develop rating curves that comply with industry and client requirements.
  • 2.7 Use theoretical methods to create or 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.
3. Maintain rating curves
  • 3.1 Confirm accuracy of rating curves using recent measurements and review trends and rating applicability.
  • 3.2 Develop rating curves based on new information from reviews and changed conditions.
  • 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 in accordance with client requirements.
  • 4.3 Make recommendations for future observations.
No information
No information
Replaces
State Code National Code Title Type
D4833 NWP510A Develop and maintain ratings Unit of competency
Replaced By
State Code National Code Title Type
OAO90 NWPHYD003 Develop and maintain ratings Unit of competency
State Code National Code Title Type
AYW5 NWP50715 Diploma of Water Industry Operations Qualification