Required skills

collect and analyse data

apply mathematical modelling and analytical tools

interpret and apply technical documentation to the collection analysis and reporting of hydrometric data

identify and address potential or actual operational problems

record information and prepare reports and interpret a range of organisational documents

use computer systems and use various computer programsampspreadsheets to create ratings

use remote work communication systems

check hydrometric data for correctness and accuracy in preparation for creating ratings

identify characteristics of ratings appropriate to various cross section typesampflow

regimes

identify incorrect and impossible ratings

adjust gaugings hydrograph trace and ratings to a common datum

create ratings manually using various methods

create ratings for standard measuring structures

develop rating techniques to handle seasonal rating changes

identify the possibilities and limitations of scale models for generating ratings

identify and recognise causes of progressive cyclical and sudden rating changes

identify backwateraffected stations and use appropriate techniques to rate them

identify gradual stream changes and adopt appropriate rating techniques

identify shortterm rating changes their causes and means of correctly processing them

apply Students T test to determine whether a new rating is required

draw an accurate rating by hand

fit a rating curve using a number of mathematical techniques available in HYDSYS HYRATED

identify the probable error of a rating and understand its significance

identify gross errors in ratings and the data used to compile them

apply appropriate quality codes to a rating

identify the elements of a stream bedampchannel that affect ratings

estimate channel roughness from photographs

calculate the overall roughness coefficient of a channel consisting of a number of elements

use graphical logarithmic methods to extend a rating

identify appropriate sections to use for slopearea flow calculations

manually calculate flow rates using a set of cross sections and a long section

use a spreadsheet to perform calculations

make correct measurements and calculate flow rates through and over various structures

Required knowledge

mathematical and other scientific techniques relevant to the analysis of hydrometric data

Students T test

the elements of a stream bedampchannel that affect the rating

the relationship between ChezyampManning roughness coefficients

computer software relevant to the analysis and archiving of hydrographic data

the basis of statistical goodness of fit tests

occupational health and safety procedures

policies and standard operating procedures

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The candidate should demonstrate the ability to establish relationships between variables such as stage versus flow and conductivity versus salinity including

gathering and interpreting complex documentation and applying it to the development and maintenance of rating curves

analysing and verifying data using standard procedures software and databases

preparing clear and accurate reports

storing and archiving data

identifying reporting and providing solutions to a range of flow conditions

Context of and specific resources for assessment

Access to the workplace and resources including

documentation that should normally be available in a water industry organisation

workplace specific equipment and technology

supervision and experienced team members to provide observations feedback and third party reports

enterprise operating procedures and work allocation

relevant codes standards and government regulations

Where applicable physical resources should include equipment modified for people with disabilities

Access must be provided to appropriate learning andor assessment support when required

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed

Validity and sufficiency of evidence requires that

competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace

where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice

a decision of competence should only be made when the assessor has complete confidence in the persons competence over time and in various contexts

all assessment that is part of a structured learning experience must include a combination of direct indirect and supplementary evidence

where assessment is for the purpose of recognition RCCRPL the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time

assessment can be through simulated projectbased activity and must include evidence relating to each of the elements in this unit

In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge Questioning will be undertaken in a manner appropriate to the skill levels of the operator any cultural issues that may affect responses to the questions and reflecting the requirements of the competency and the work being performed

Standard processes and software may include:

Mathematical techniques may include:

A variety of hydraulic conditions may include:

Control Types may include:

Theoretical methods may include:

Archival data may include: