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Dam feasibility assessments, permits and safety reviews

RMCG Tasmania can prepare Division 3 and Division 4 Dam Permit applications, Water Allocation Assessment Reports (WAAR) and dam safety reviews.

Our approach to both Division 4 (Notice of Intent to Undertake Dam Works) and Division 3 (Application to Undertake Dam Works) permits and WAARs is from a fatal flaw analysis perspective where we investigate and work through all the potential issues (flora, fauna, vegetation, yield, engineering, fish passage, acid sulfate soils, saline soils, landslide, sediment and erosion control and Aboriginal Heritage).

We then provide the client with guidance on likely additional assessment requirements, associated costs and likelihood of a successful application, prior to completing and submitting a Division 4, Division or WAAR.

While we undertake the majority of the dam feasibility assessments ourselves, we also coordinate the preparation of reports from other specialists (surveyors, hydrologists, engineers, Aboriginal and Cultural Heritage consultants etc.) where required.

Dam safety reviews

RMCG Tasmania has Class 2 engineering expertise (ANCOLD). Dam safety reviews generally require completion and compilation of all required documentation for registering existing dams. This entails desktop and field assessment to complete key dam details such as catchment and spillway capacity calculations, a Dam Safety Compliance Check, and assessment of the Consequence Category in accordance with ANCOLD Guidelines 2012. This includes:

  • Initial Level Assessment Flood inundation mapping
  • Estimated dam break peak flow and failure time
  • Dam Failure Impact – Initial Assessment
  • Estimation of Population at Risk (PAR).

We work closely with dam engineering consultants as project managers and coordinators for larger projects and to ensure an appropriate level of expertise in situations where additional engineering is required.

Project example: TasWater dam safety review

In 2016, we were engaged to register a number of existing unregistered TasWater owned dams and lagoons as required under the Water Management Act 1999.

The completion and compilation of all required documentation for registering existing dams included desktop and field assessment to complete key dam details such as catchment and spillway capacity calculations, a Dam Safety Compliance Check, and assessment of the Consequence Category in accordance with ANCOLD Guidelines 2012. This included:

  • Initial Level Assessment Flood inundation mapping
  • Estimated dam break peak flow and failure time
  • Dam Failure Impact – Initial Assessment
  • Estimation of Population at Risk (PAR).

Team

Astrid Ketelaar

Astrid Ketelaar

Associate

B. Land Man.

Astrid has been a natural resource management service provider since 1999, specialising in irrigation water resources and land use planning, and oversees all the services the Launceston team provides. Astrid has a background as a Technical Forester and over 25 years’ experience in land and water resources management.

Sally Scrivens

Sally Scrivens

Consultant

BSc (Hons)

Sally has a background in ecology with extensive field experience. She specialises in natural values assessments and has experience in water resources and land use planning.

Samantha Gadsby

Samantha Gadsby

Senior Consultant

BSc, M Env Man.

Samantha specialises in water resources and delivers services in natural values and development approvals. Samantha’s main work at the moment is delivering a dam safety audit project for Taswater.