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8. Launceston Flood Authority
Submission to: PARLIAMENTARY STANDING COMMITTEE OF PUBLIC ACCOUNTS INQUIRY INTO GOVERNMENT OWNED ENERGY ENTITIES Launceston Flood Authority May 2016 This document was authored by the Launceston Flood Authority based on publicly available information as referenced within the document. The data presented was correct at the time of writing and the author provides no warranty of its ongoing accuracy. The document remains the property of the Launceston Flood Authority. It may be copied and reproduced only in its entirety for the purpose of promoting the aims of the document. Enquiries in regard to the document can be directed to: Launceston Flood Authority PO Box 396, Launceston, Tasmania 7250 Or by email to [email protected] Contents Foreword ................................................................................................................................................... iii Executive Summary ..................................................................................................................................... 1 Introduction ........................................................................................................................................................................................... 1 Strategic Direction.................................................................................................................................................................................. 1 River Health........................................................................................................................................................................................... -
L'ton Thematic History Report
LAUNCESTON HERITAGE STUDY STAGE 1: THEMATIC HISTORY Prepared by Ian Terry & Nathalie Servant for Launceston City Council July 2002 © Launceston City Council Cover. Launceston in the mid nineteenth century (Sarah Ann Fogg, Launceston: Tamar Street Bridge area , Allport Library & Museum of Fine Arts, State Library of Tasmania). C O N T E N T S The Study Area ........................................................................................................................1 The Study .................................................................................................................................2 Authorship................................................................................................................................2 Methodology ............................................................................................................................2 Acknowledgments....................................................................................................................3 Abbreviations ...........................................................................................................................3 HISTORIC CONTEXT Introduction..............................................................................................................................4 1 Environmental Context .........................................................................................................5 2 Human Settlement.................................................................................................................6 -
Submission: Collier
SUBMISSION to the TAMAR ESTUARY MANAGEMENT TASKFORCE PERSONAL PROFILE: Following many years of sailing on the River Tamar in 1992 my wife Linda and I sailed out of the River in our 10 metre steel ketch at the beginning of what turned out to be a 10 year voyage around the world returning in 2002 absolutely horrified to discover that the River Tamar we had sailed out of was not the same River we returned to. The Tamar’s upper reaches appeared to have rapidly silted up and at low tide appeared, and still do, absolutely disgusting. Though this was the most obvious and visual problem beguiling the Tamar’s upper reaches it was not long before we became aware that lurking in and below the muddy waters was a toxic contamination problem of enormous proportions, confirmed by numerous scientific reports over the years! There was, and is, no doubt the Tamar was seriously environmentally degraded and we have been campaigning ever since to have the situation properly addressed. RIVER DEGRADATION CAUSES:- Reduced river flows. High speed vessels causing river bank erosion. Inadequate, archaic combined sewage and stormwater infrastructure. Lack of clearly defined areas of management and responsibility for the Tamar estuary. RIVER FLOWS: In 1955 Trevallyn Dam and its associated power station were commissioned. Prior to this, under natural conditions, South Esk River flows through the Cataract Gorge in to the Tamar’s upper reaches were between 20 and 100 cubic metres per second (cumecs) for the majority of the time and had a flow of at least 5 cumecs for 95% of the time. -
11817, Cataract Gorge
Tasmanian Heritage Register Datasheet 103 Macquarie Street (GPO Box 618) Hobart Tasmania 7001 Phone: 1300 850 332 (local call cost) Email: [email protected] Web: www.heritage.tas.gov.au Name: Cataract Gorge THR ID Number: 11817 Status: Provisionally Registered Municipality: Launceston City Council Tier: State Location Addresses Title References Property Id 64 GORGE RD, TREVALLYN 7250 TAS 120905/1 6585214 274 BRISBANE ST, WEST LAUNCESTON 7250 TAS 144179/1 6668554 , LAUNCESTON 7250 TAS 74-90 BASIN RD, WEST LAUNCESTON 7250 TAS 243968/1 2838376 , LAUNCESTON 7250 TAS 74-90 BASIN RD, WEST LAUNCESTON 7250 TAS 152533/1 2838376 74-90 BASIN RD, WEST LAUNCESTON 7250 TAS 2838376 64 GORGE RD, TREVALLYN 7250 TAS 120905/2 6585214 64 GORGE RD, TREVALLYN 7250 TAS 235401/1 6585214 64 GORGE RD, TREVALLYN 7250 TAS 167409/1 6585214 64 GORGE RD, TREVALLYN 7250 TAS 120827/1 6585214 64 GORGE RD, TREVALLYN 7250 TAS 235401/1 6585214 Caretaker's Cottage, Duchess Hut, Cataract Tree Hut, Cliff Grounds View from Eagle Eyrie Cataract Walkway Walkway 2013 DPIPWE 2013 DPIPWE 2013 DPIPWE 2013 DPIPWE 2013 Duchess Hut and Crows Nest, Viewing Toll Booth, Cataract Band Rotunda, Cliff Picnic Rock Area no.2 Walkway Grounds DPIPWE, 2013 DPIPWE, 2013 Setting: The Cataract Gorge Reserve (the Gorge) is a public park set in a dramatic natural amphitheatre to the west of the city centre of Launceston, in Tasmania’s north. Intersected by the South Esk River, the Gorge is surrounded by native bush and the residential suburbs of Trevallyn and West Launceston . Description: The overall Cataract Gorge precinct is an example of a Victorian pleasure ground with related features including walkways, shelters, lookouts and recreational facilities set amongst natural bushland and dramatic riverine scenery (see comparative analysis section). -
Environmental Review Report
EXECUTIVE SUMMARY This Environmental Review document is the first of a series which comprehensively describe Hydro operations and provide an overview of related aquatic environmental issues in each of its major catchments. This document fulfils some key commitments of the Hydro’s Aquatic Environmental Policy. It will also assist the general public in understanding Hydro operations and issues in the South Esk – Great Lake catchment, as the Hydro commences its Water Management Review in this catchment area. The South Esk Basin is the largest water catchment in Tasmania, making up almost 15% of Tasmania’s land mass. The Basin is comprised of the catchments of the South Esk, Macquarie and Meander Rivers. Water from the Great Lake catchment, which lies on Tasmania’s Central Plateau, is diverted into the South Esk Basin for the purposes of hydro-electric power generation. The Poatina Power Scheme utilises water from the Great Lake catchment, Arthurs Lake (originally in the upper Macquarie River sub-catchment), and diversions of the upper Ouse River, the upper Liffey River and Westons Rivulet – upper Brumbys Creek. It consists of three main storages (Great Lake, Arthurs Lake and Lake Augusta), two power stations (Poatina and Tods Corner) and other water diversion and transfer infrastructure. Also associated with the Poatina Power Scheme is another storage, Woods Lake, the primary function of which is to store water for irrigation. The Poatina Power Scheme diverts between 620 and 730 Mm3 per year of Great Lake water from the Derwent catchment, via Poatina Power Station, into the South Esk catchment. The Trevallyn Power Scheme utilises water from the entire South Esk catchment, harnessing the South Esk, Macquarie and Meander Rivers, and re-using water from the Great Lake catchment discharged from Poatina Power Station. -
Trevallyn Hydropower Development
Pilot Assessment Trevallyn Hydropower Development Tasmania, Australia 4th April 2012 Client: Hydro Tasmania Project sponsor: Hydro Tasmania Lead assessor: Bernt Rydgren Co-assessors: Doug Smith, Jörg Hartmann Date: 04/04/2012 Project stage: Operation Project size: 96 MW Project type: Run-of-river The assessment team, clockwise from lower left: Simon Howard, Sustainability Specialist, IHA HQ; Bernt Rydgren, Senior Consultant, ÅF Infrastructure AB; Jörg Hartmann, Water Security Lead, WWF; and Douglas Smith, Sustainability Specialist, IHA Central Office. Centre: Helen Locher, Principal Consultant Sustainability, Hydro Tasmania, and Single Point of Contact for the assessment. Table of Contents 1 Executive Summary ........................................................................................... 1 2 Sustainability profile .......................................................................................... 3 3 The Hydropower Sustainability Assessment Protocol ................................... 4 3.1 Introduction to the Protocol ...................................................................................... 4 3.2 The Operation Assessment Tool ............................................................................. 4 3.3 Pilot Assessment ..................................................................................................... 5 4 Assessment Objectives ..................................................................................... 5 5 Project Description ........................................................................................... -
THR#11976, Duck Reach
Tasmanian Heritage Register Datasheet 103 Macquarie Street (GPO Box 618) Hobart Tasmania 7001 Phone: 1300 850 332 (local call cost) Email: [email protected] Web: www.heritage.tas.gov.au Name: Duck Reach Power Scheme THR ID Number: 11976 Status: Provisionally Registered Municipality: Launceston City Council Tier: State Location Addresses Title References Property Id 1-5 CORIN ST, TREVALLYN 7250 TAS 149077/1 6637475 1-5 CORIN ST, TREVALLYN 7250 TAS 149078/1 6637475 , TREVALLYN 7250 TAS N/A N/A CORIN ST, WEST LAUNCESTON 7250 TAS 60647/8 6637387 2 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/6 2673831 4 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/5 7525950 6 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/4 7525969 8 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/3 6637432 10-16 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/2 2673866 10-16 CORIN ST, WEST LAUNCESTON 7250 TAS 60647/1 2673866 , WEST LAUNCESTON 7250 TAS N/A , WEST LAUNCESTON 7250 TAS N/A N/A REATTA RD, TREVALLYN 7250 TAS 142349/1 2081342 Duck Reach Power Weir and eastern Suspension bridge, Machine House Station channel northern pier ©DPIPWE 2011 © DPIPWE 2013 © DPIPWE 2013 © DPIPWE 2013 Power Station interior Penstock Intake structure Cottages including Chief Engineers' © DPIPWE 2013 © DPIPWE 2013 © DPIPWE 2013 Residence © DPIPWE 2010 Setting: The Duck Reach Power Scheme is situated on the South Esk River between Second and Third Basins , 3km west of the Launceston CBD. Historically, this section of the South Esk was subject to regular flooding although since construction of the Trevallyn Dam upstream this occurs less frequently . -
Duck Reach Power Station
NOMINATION OF DUCK REACH POWER STATION AS A HISTORIC ENGINEERING MARKER VOLUME 2 - APPENDICES Prepared by Anthony Lee Engineering Heritage Tasmania Engineers Australia September 2005 Duck Reach Power Station Historic Engineering Marker CONTENTS OF VOLUME 2 Page BIOGRAPHIES William CORIN...................................................................................... 2 Charles St John DAVID ....................................................................... 4 Professor William Charles KERNOT .................................................. 5 Kynaston Noel Lapthrop MURRAY..................................................... 6 TECHNICAL PAPERS K L Murray, 1897 "Electric Lighting of Launceston, Tasmania", (with a description of the civil works by C St John David) Victorian Institute of Engineers........................................................ 10 Discussion 1 on Murray's paper................................................. 23 Discussion 2 on Murray's paper................................................. 25 Martinek A & Lauri A, 1906 "Launceston Hydraulic Power- Station" Abstract, Electrotechnische Zeitschrift, Berlin ................ 35 Henry Button, 1909 "Electric Lighting". Extract from Flotsam & Jetsam, The Examiner 1993............................................ 36 Corin, William, 1910 "Efficiency Tests of a Hydro-electric Plant, with Observations upon the Water-Power of Tasmania" Trans ICE Vol CLXXX111 1910/11 Part 1 (abridged) ....................... 39 Garvie, Robert, 1962 "The Beginnings". Extract from A Million -
Upper Lake River
South Esk – Great Lake Water Management Review Scientific Report on Cataract Gorge August 2003 Prepared by Hydro Tasmania Research into the environmental flow requirements for Cataract Gorge and the habitat requirements and distribution of Beddomeia launcestonensis was conducted by Freshwater Systems Pty Ltd. Funding for this project was received from the Natural Heritage Trust. Table of Contents 1. Assessment of Issues and Status .........................................................1 2. Formulation of Study Objectives .........................................................12 3. Data Collection and Analysis...............................................................13 4. Environmental Management Options for Cataract Gorge....................51 Scientific Report on Cataract Gorge August 2003 CATARACT GORGE 1. ASSESSMENT OF ISSUES AND STATUS Background Through the Environmental Review and Community Consultation processes of the Water Management Review for the South Esk – Great Lake catchment, a number of issues were identified for Cataract Gorge. The principal issues were: low flow in the Gorge during the summer when the dam is not spilling. This impacts on recreational use and visual aesthetics, as well as environmental health and water quality; elevated nutrient concentrations in the South Esk River that may encourage excessive growth of green algae and potentially toxic blue-green algae; increased bacterial levels in the Gorge that result in closure of the waterway for recreational use (swimming); and the presence of a listed threatened species (Beddomeia launcestonensis), which may be impacted by present water management in the Gorge. This report provides information on these issues as well as the results of studies that were undertaken to identify appropriate options to manage these issues. The options that were subsequently identified were then costed and reviewed as part of a cost-benefit analysis covering the whole of the South Esk – Great Lake catchment.