Modification History
NWP510A Release 2: Layout adjusted. No changes to content.
NWP510A Release 1: Primary release.
Unit Descriptor
This unit of competency describes the outcomes required to establish relationships between variables such as stage versus flow, conductivity versus salinity. This unit requires understanding of the processes required to collect data accurately, interpret data, verify data and produce clear reports that conform to organisational and industry standards.
Application of the Unit
This unit supports the attainment of skills and knowledge required for assistant hydrographers, field hydrologists and water operators responsible for reporting water quality, volume and flow in water systems.
Licensing/Regulatory Information
Not applicable.
Pre-Requisites
Not applicable.
Employability Skills Information
This unit contains employability skills.
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1 Review individual measurements . |
1.1 Identify purposes of ratings. 1.2 Review measurements 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 sources of error in ratings. 2.3 Prepare rating curves based on measurements and agreed formulae and mathematical techniques under a variety of hydraulic conditions and control types . 2.4 Confirm and verify existing trend or define new trend. 2.5 Develop rating curves which comply with industry and client requirements. 2.6 Use theoretical methods to create or extend ratings. 2.7 Document processes and observations to provide traceability and accountability for quality assurance. 2.8 standard formulas to create ratings for pre-calibrated measuring structures. 2.9 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 and in accordance with organisational procedures. 3.4 Document processes and observations and adjustments made. |
4 Report rating curves . |
4.1 Check rating curves covers full stage range. 4.2 Prepare and store required archival data according to organisational procedures for data security. 4.3 Prepare and disseminate ratings in accordance with client requirements. 4.4 Make recommendations for future observations. |
Required Skills and Knowledge
This section describes the skills and knowledge required for this unit. |
Required skills :
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Required knowledge :
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Evidence Guide
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. |
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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:
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Context of and specific resources for assessment |
Access to the workplace and resources including:
Where applicable, physical resources should include equipment modified for people with disabilities. Access must be provided to appropriate learning and/or 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:
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. |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
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Standard processes and software may include: |
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Mathematical techniques may include: |
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A variety of hydraulic conditions may include: |
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Control Types may include: |
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Theoretical methods may include: |
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Archival data may include: |
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Unit Sector(s)
Not applicable.
Competency field
Hydrography.