DOCSLIB.ORG

37 July 2017

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
37 July 2017 Friends of Sturt Gorge Newsletter No 37 : July 2017 This edition: Snakes, Platypuses, Sturt Dam Crossing, Themeda grass, Weather…. was still there and you have got the Snakes Alive! resulting photo. I then left it to enjoy the sunshine. I was a little amazed, having Rick Coyte, Peter Szell, worked in that area for 4 years and never Andrew Watson, sighted a snake”. uring the latter weeks of summer D one of the regular workers in the southern part of the Gorge - Peter Szell - contacted Rick Coyte to say that he'd spotted a large brown snake while working and that he'd been able to get a picture of it. Apparently Peter nearly stepped on the snake, and before he could think about it, had made a reflex jump to avoid it. His story; Peter Szell’s brown snake “I saw the snake twice, on the way back to my car after my working bee I stopped At a similar time Andrew Watson also had a snake encounter; to look at one of my past work of “While working on the Blackwood South removing a thicket of dense olive bushes Bush for Life site a couple of months ago and found that it was used by foxes in (not strictly FOSG work but closely the past and had 5 or 6 entry holes which related), I knelt down to pull some I filled and blocked at the time. After I boneseed, heard a movement, looked to had stopped I looked down to my my left and found I was within a metre amazement there was the snake curled of a two metre long black snake. The up sunning itself. I took some photos morning shadows had disguised him using my phone. I must have disturbed it well! He wasn’t going anywhere, but I and it uncoiled and wriggled off. It was did – quickly to my right! I took a couple close to 6 feet long. The following week of photos which should complement it was there again so I went to my car Peter Szell’s brown snake photo nicely”. and took my camera and went back it There was some conjecture that what he had seen might have been a native Water Rat or a tortoise. Despite this Mark expressed the view that he really had seen a platypus. In an email to President Amy Blaylock he wrote: “According to Cath Kemper (curator of mammals at the SA Museum) it is likely either a) a mistake or b) an escapee from Warrawong sanctuary. Apparently they are formally regarded as extinct in SA. Even the ones on KI were introduced. I still reckon I know what I saw, but it will probably require verification before it goes any further.” Andrew Watson’s black snake On the 8th Feb, in an attempt to obtain Platypus Sightings in this verification, Donna Ferschl (DEWNR Park Ranger), Luke Price Sturt River (Fauna Ecologist DEWNR), a trainee Rick Coyte ranger, and Rick Coyte (FOSG) went down to the Sturt River to the location of he official view is that the platypus Mark’s sighting to look for the platypus T is extinct in the wild in South or a tortoise or whatever might be there. Australia, but despite this there have There was an unusual amount of water been several sightings reported in the going down the creek for the time of Sturt River this year. The first was by year, and the relevant pool was deep and Mark Parnell (Parliamentary Leader, SA dark. Nothing of note was seen, apart Greens) while bushwalking on 5th from a number of Eastern Water Skinks, February. In an email to Friends of Sturt but in a likely spot on one bank Luke set Gorge he wrote: up an infrared-activated camera to “Whilst out exploring the River Trail automatically photograph any critter that yesterday morning, I came across a might pass under it. The camera was left there for a week or so, and photographed platypus! Never having seen one in the Water Rats and a few introduced Black wild in SA before, I got quite excited… I Rats, but sadly no platypus. now understand that it may have been However, several months later, on 12th more significant than I realised. I figured April there was a second sighting. Again that they were rare, but my sighting it was in the Sturt River, but at quite a seems to have got people quite excited.” different location. This time it was Les Gray, one of our own members, who 2 made the sighting whilst doing some trail years ago for a bloke at Willunga Hill for work. His email to a fellow member a private wildlife park but don’t know reads: what ever happened to them (they didn’t "I stopped [work] for a drink at 10.10am go back to KI). He became seriously ill today and was aware of a lot of and the project was cancelled soon movement and rustling in the fronds after.” (According to John Wamsley the that hang in the water of that large palm pond in which those animals were placed tree diagonally opposite the large fallen was unsuitable, and animals didn’t last gum. I thought a duck must have more than a few weeks). become entangled and kept watching Les’s past experience with platypuses and then about 15 seconds later a large makes him a well-qualified witness, so platypus came slowly swimming across his sighting adds weight and credibility on the surface to my side of the pool near to the first reported sighting by Mark the gum from the palm and then went Parnell in February. Several of us have under the overhanging blackberries on subsequently checked the location, and it my side! I was amazed!!!. It was is true that, as Les said, he would have been very close, with a clear view. definitely a platypus and a large adult As for where the platypuses came from, specimen, the water was shallow and apart from Kangaroo Island the only clear and I was able to observe it for other place in South Australia where they about 20 seconds. I then watched and are known to have been successfully waited for around 10 mins but it did not reintroduced is Warrawong Sanctuary re-appear. I have seen platypus before in (now defunct) where they are known to the wild and this was definitely one and have been breeding, and probably are not a mutant water rat - I had a very still doing so. John Wamsley, founder clear unobstructed close view of it. Send and former owner of Warrawong this on to whoever you may think is Sanctuary, said that three to four young interested. I don’t care if they think I platypuses leave Warrawong each year. must have been on the turps, I know Platypuses tend to be solitary and what I saw. There’s at least one platypus territorial, and once a platypus has in Sturt River!" established itself in a pool or section of a river it will drive out any others that Wondering later how a platypus got into attempt to enter. Once progeny are able Sturt River, Les wrote: to fend for themselves, they too are "The only official introduction to SA was driven out and must find a pool of their in Rocky River on KI in the 1920s. I own. Although a fox, dog, and cat-proof fence encloses Warrawong, John says worked in the research section of the that young platypuses can fit through the Fisheries Department for 28 years and mesh. Apparently on Kangaroo Island, in was involved in collecting a couple from their search for new habitat young KI using fine mesh gill nets about 30+ platypuses have been found up to twelve 3 kilometres from water. Foxes like to eat high degree of human involvement. So it platypuses, so the loss rate at this time has been suggested that someone may may be fairly high. However at least have poached platypuses from Kangaroo some platypuses must have reached and Island, and later released them into the occupied pools, dams and creeks near Sturt River. But although that is a Warrawong. That means that platypuses possibility, given what we know about escaping Warrawong in subsequent years platypus behaviour as discussed above, would have had to look further afield, and their presence and behaviour at and so on in each following year. Warrawong, it seems more likely that Warrawong is in the Onkaparinga any platypus in Sturt River originated catchment, which is divided from the from there. Sturt River catchment by Longwood Road ridge. For a platypus to get to the upper reaches of a creek that feeds into the Sturt River, it would have to get from Warrawong to Heathfield, up slope and across the Longwood Road ridge, and down the other side, a distance of about five kilometres. This distance is well within their capabilities. But would platypuses climb uphill, and cross Longwood Road? According to Les’s research platypuses have been known to leave a stream and move overland around substantial waterfalls, which means John Wamsley’s article on platypuses in the ‘Weekender Herald’ negotiating significant slopes. Les adds that: Because Warrawong is in the “Platypuses are often killed while Onkaparinga catchment, if a platypus crossing roads in Tasmania. In fact there escaped Warrawong it would seem more are roadside platypus-crossing warning likely for it to find Aldgate Creek, Leslie signs in that state, and I’ve had one Creek, or even the upper reaches of Scott scamper across the road in front of me Creek, all of which are much closer than while driving near Strahan on the west Sturt Creek.
Load more

Recommended publications
  • Onkaparinga River National Park 1544Ha and Recreation Park 284Ha
    Onkaparinga River National Park 1544ha and Recreation Park 284ha The Onkaparinga River – South Australia’s second longest – flows through two very different parks on its journey to the sea, creating a contrast of gullies, gorges and wetlands. In Onkaparinga River National Park, diverse hiking trails take you to cliff tops with magnificent views, or down to permanent rock pools teeming with life. You’ll see rugged ridge tops and the narrow river valley of the spectacular Onkaparinga Gorge. The park protects some of the finest remaining pockets of remnant vegetation in the Southern Adelaide region. Areas of the park were used as farmland for many years, so you can also discover heritage-listed huts and the ruins of houses built in the 1880s. Wherever you go, you’ll be among native wildlife such as birds, koalas, kangaroos and possums - you may even spot an echidna. In Onkaparinga Recreation Park, the river spills onto the plains, creating wetland ponds and flood plains. The area conserves important fish Contact breeding habitat and hundreds of native plant and animal species, many of which are rare. The Onkaparinga River estuary also provides habitat for Emergency: 000 endangered migratory birds. Onkaparinga River National Park and Rec Park The recreation park is popular with people of all ages and interests. You (+61 8) 8550 3400 can go fishing in the river, wander along the wetland boardwalks, ride a bicycle on the shared use trails, walk your dog (on a lead), kayak the calm General park enquiries: (+61 8) 8204 1910 waters or just be at peace with nature.
    [Show full text]
  • Rosetta Head Well and Whaling Station Site PLACE NO.: 26454
    South Australian HERITAGE COUNCIL SUMMARY OF STATE HERITAGE PLACE REGISTER ENTRY Entry in the South Australian Heritage Register in accordance with the Heritage Places Act 1993 NAME: Rosetta Head Well and Whaling Station Site PLACE NO.: 26454 ADDRESS: Franklin Parade, Encounter Bay, SA 5211 Uncovered well 23 November 2017 Site works complete June 2019 Source DEW Source DEW Cultural Safety Warning Aboriginal and Torres Strait Islander peoples should be aware that this document may contain images or names of people who have since passed away. STATEMENT OF HERITAGE SIGNIFICANCE The Rosetta Head Well and Whaling Station Site is on the lands and waters of the Ramindjeri people of the lower Fleurieu Peninsula, who are a part of the Ngarrindjeri Nation. The site represents a once significant early industry that no longer exists in South Australia. Founded by the South Australian Company in 1837 and continually operating until 1851, it was the longest-running whaling station in the State. It played an important role in the establishment of the whaling industry in South Australia as a prototype for other whaling stations and made a notable contribution to the fledgling colony’s economic development. The Rosetta Head Whaling Station is also an important contact site between European colonists and the Ramindjeri people. To Ramindjeri people, the whale is known as Kondli (a spiritual being), and due to their connection and knowledge, a number of Ramindjeri were employed at the station as labourers and boat crews. Therefore, Rosetta Head is one of the first places in South Australia where European and Aboriginal people worked side by side.
    [Show full text]
  • 2011 Baseline Survey of the Fish Assemblage of Warriparinga Wetland and the Adjacent Sturt River- Implications for Native and Invasive Fish Species Management
    2011 baseline survey of the fish assemblage of Warriparinga Wetland and the adjacent Sturt River- implications for native and invasive fish species management Leigh Thwaites and Josh Fredberg SARDI Publication No. F2011/000520-1 SARDI Research Report Series No. 596 SARDI Aquatic Sciences 2 Hamra Avenue West Beach SA 5024 January 2012 A summary report for the Marion City Council A summary report for the Marion City Council 2011 baseline survey of the fish assemblage of Warriparinga Wetland and the adjacent Sturt River- implications for native and invasive fish species management A summary report for the Marion City Council Leigh Thwaites and Josh Fredberg SARDI Publication No. F2011/000520-1 SARDI Research Report Series No. 596 January 2012 This publication may be cited as: Thwaites, L. A. and Fredberg, J. F (2012). 2011 baseline survey of the fish assemblage of Warriparinga Wetland and the adjacent Sturt River- implications for native and invasive fish species management. A summary report for the Marion City Council. South Australian Research and Development Institute (Aquatic Sciences), Adelaide. SARDI Publication No. F2011/000520-1. SARDI Research Report Series No. 596. 30pp. South Australian Research and Development Institute SARDI Aquatic Sciences 2 Hamra Avenue West Beach SA 5024 Telephone: (08) 8207 5400 Facsimile: (08) 8207 5406 http://www.sardi.sa.gov.au DISCLAIMER The authors warrant that they have taken all reasonable care in producing this report. The report has been through the SARDI Aquatic Sciences internal review process, and has been formally approved for release by the Chief, Aquatic Sciences. Although all reasonable efforts have been made to ensure quality, SARDI Aquatic Sciences does not warrant that the information in this report is free from errors or omissions.
    [Show full text]
  • 100 the SOUTH-WEST CORNER of QUEENSLAND. (By S
    100 THE SOUTH-WEST CORNER OF QUEENSLAND. (By S. E. PEARSON). (Read at a meeting of the Historical Society of Queensland, August 27, 1937). On a clear day, looking westward across the channels of the Mulligan River from the gravelly tableland behind Annandale Homestead, in south­ western Queensland, one may discern a long low line of drift-top sandhills. Round more than half the skyline the rim of earth may be likened to the ocean. There is no break in any part of the horizon; not a landmark, not a tree. Should anyone chance to stand on those gravelly rises when the sun was peeping above the eastem skyline they would witness a scene that would carry the mind at once to the far-flung horizons of the Sahara. In the sunrise that western region is overhung by rose-tinted haze, and in the valleys lie the purple shadows that are peculiar to the waste places of the earth. Those naked, drift- top sanddunes beyond the Mulligan mark the limit of human occupation. Washed crimson by the rising sun they are set Kke gleaming fangs in the desert's jaws. The Explorers. The first white men to penetrate that line of sand- dunes, in south-western Queensland, were Captain Charles Sturt and his party, in September, 1845. They had crossed the stony country that lies between the Cooper and the Diamantina—afterwards known as Sturt's Stony Desert; and afterwards, by the way, occupied in 1880, as fair cattle-grazing country, by the Broad brothers of Sydney (Andrew and James) under the run name of Goyder's Lagoon—and the ex­ plorers actually crossed the latter watercourse with­ out knowing it to be a river, for in that vicinity Sturt describes it as "a great earthy plain." For forty miles one meets with black, sundried soil and dismal wilted polygonum bushes in a dry season, and forty miles of hock-deep mud, water, and flowering swamp-plants in a wet one.
    [Show full text]
  • Friends of Warriparinga Inc.PDF
    Submission Regarding the Proposed Planning Controls for Lot 707 (Marion Road, part of Laffer’s Triangle) under the proposed Planning and Design Code. 1. Introduction This submission is from the Friends of Warriparinga Inc, a volunteer group which was established nearly 30 years ago “…to protect and restore as far as possible the natural vegetation along the Sturt River and land adjacent in Warriparinga – Laffer’s Triangle; to promote the natural quality of the western portion, including the river, of Warriparinga- Laffer’s Triangle as an open space community resource; to act to improve the quality of water of the Sturt River; to preserve the Kaurna spirit of the area….”. A further objective is “…to protect the open space, ecological and heritage value of the entire triangle bordered by South, Marion and Sturt Roads”. Friends of Warriparinga (FOW) has undertaken work over these past 30 years on a volunteer basis in support of these objectives. It has lobbied for, and secured, the protection of this vitally important urban location, and has successfully restored this length of remnant river to its pre-1836 condition. This encouraged significant initiatives downstream, including the establishment of Warriparinga Wetlands, Oakland Wetlands and the river corridor between them. Together, these projects have broadened the scope and extent of this unique conservation initiative on the Adelaide Plains. Laffer’s Triangle, including Warriparinga and Lot 707, is the beginning of this stretch of river, and it is vitally important that it is protected. FOW is concerned that the proposed changes in planning controls for the Laffer’s Triangle area place the Sturt River and Warriparinga at risk of poorly managed developments, as the current protections will be reduced and expose the river and environment to increased environmental impacts.
    [Show full text]
  • South Australia State by Officers of Climate Change Department, Government of Gujarat: Understanding Climate Change Actions in South Australia Introduction Mr
    SA Visit Report – 2017 Visit Report Visit to South Australia State by Officers of Climate Change Department, Government of Gujarat: Understanding Climate Change actions in South Australia Introduction Mr. Mukesh Shah, Joint Secretary and Mr. Shwetal Shah, Technical Advisor of Climate Change Department visited Adelaide, South Australia during October 30 – November 01, 2017. The purpose of the visit was to understand to progress made by the South Australia in areas of climate change adaptation and mitigation. The Future Fund of the Climate Group, States and Regions Alliance provided support in accomplishing this visit and learning platform for emerging State partners. The visit was comprehensively planned and supported by the officers and associates of Government of South Australia. The major discussions and deliberation of the visit are given in this report. Day 1 – Interaction with the DEWNR team and Visit of Adelaide City The meeting with the DEWNR team was organized in the first half of the day 1, in this meeting primary introduction on the activities of South Australia was given by Ms. Julia Grant. The broad understanding of the South Australia’s DEWNR’s activities was given and how the planning is in place for the net zero emission by 2050 was also discussed. Mr. Shwetal Shah made presentation on Gujarat’s activities in Climate Change field along with an audio visual presentation of the major activities of the State of Gujarat in the field of Renewable Energy and the Climate Change adaptation. Dr Brita Pekarsky also made an interesting presentation with a comparison of the two states, which is highly varied in its population, land area and overall GHG emission, she also explained on details like how GHG emission is being reduced in South Australia since 1990 to the present day and how net zero GHG will be achieved by 2050.
    [Show full text]
  • Summary of Groundwater Recharge Estimates for the Catchments of the Western Mount Lofty Ranges Prescribed Water Resources Area
    TECHNICAL NOTE 2008/16 Department of Water, Land and Biodiversity Conservation SUMMARY OF GROUNDWATER RECHARGE ESTIMATES FOR THE CATCHMENTS OF THE WESTERN MOUNT LOFTY RANGES PRESCRIBED WATER RESOURCES AREA Graham Green and Dragana Zulfic November 2007 © Government of South Australia, through the Department of Water, Land and Biodiversity Conservation 2008 This work is Copyright. Apart from any use permitted under the Copyright Act 1968 (Cwlth), no part may be reproduced by any process without prior written permission obtained from the Department of Water, Land and Biodiversity Conservation. Requests and enquiries concerning reproduction and rights should be directed to the Chief Executive, Department of Water, Land and Biodiversity Conservation, GPO Box 2834, Adelaide SA 5001. Disclaimer The Department of Water, Land and Biodiversity Conservation and its employees do not warrant or make any representation regarding the use, or results of the use, of the information contained herein as regards to its correctness, accuracy, reliability, currency or otherwise. The Department of Water, Land and Biodiversity Conservation and its employees expressly disclaims all liability or responsibility to any person using the information or advice. Information contained in this document is correct at the time of writing. Information contained in this document is correct at the time of writing. ISBN 978-1-921218-81-1 Preferred way to cite this publication Green G & Zulfic D, 2008, Summary of groundwater recharge estimates for the catchments of the Western
    [Show full text]
  • Park Profile Looking After Encounter Marine Park
    (JT) (JT) Egret Hooded plovers plovers Hooded R: L: (JT) (CC) Blue devil Sea sponge L: R: (CC) 40 THINGS TO DO IN (JT) ENCOUNTER MARINE PARK Pigface Leafy seadragon A park that covers ocean waters, reefs, islands, cliffs, estuaries, and jetties. Elusive leafy L: R: seadragons hide whilst colourful fish are aplenty. With hidden beaches and sheltered bays to be found, you’ll encounter new textures, strange sights and a hundred different sounds. Encounter Marine Park offers endless possibilities for For thousands of years the beaches and oceans have families and groups to explore, discover and learn been culturally significant to the Kaurna, Ngarrindjeri (JT) about the plants and animals that call this Marine Park and Ramindjeri people as a source of food, travel, (JT) home. The Park begins south of Adelaide spanning and Dreaming. across the waters of the Fleurieu Peninsula and The Park is home to leafy seadragons, whales, extending past the Murray Mouth to the Coorong Cockles Cormorant Cormorant dolphins, seals, sharks, cuttlefish, octopus, stingrays, coast. At its western boundary, the marine park L: R: little penguins, the world’s largest breeding colony includes all waters of Backstairs Passage and the of Australian sea lions (Pages Island), hundreds of eastern shores of Kangaroo Island. Within the Marine shorebirds including the endangered hooded plover Park there are areas protected by Sanctuary Zones – and many different types of seagrasses, algae and areas of high conservation significance protecting Looking After Encounter Marine Park other marine life forms. You can download a map from plants and animals. Certain activities like fishing and environment.sa.gov.au/marineparks/home 1 Keep wildlife wild: We must never feed wildlife as it can be unhealthy for them and can impact their collecting are not allowed.
    [Show full text]
  • Assessment of Surface Water Resources of Patawalonga Catchment and the Impact of Farm Dam Development
    DWLBC REPORT Assessment of Surface Water Resources of Patawalonga Catchment and the Impact of Farm Dam Development 2007/09 Assessment of Surface Water Resources of Patawalonga Catchment and the Impact of Farm Dam Development Kim Teoh Knowledge and Information Division Department of Water, Land and Biodiversity Conservation January 2006 Report DWLBC 2007/09 Knowledge and Information Division Department of Water, Land and Biodiversity Conservation 25 Grenfell Street, Adelaide GPO Box 2834, Adelaide SA 5001 Telephone National (08) 8463 6946 International +61 8 8463 6946 Fax National (08) 8463 6999 International +61 8 8463 6999 Website www.dwlbc.sa.gov.au Disclaimer Department of Water, Land and Biodiversity Conservation and its employees do not warrant or make any representation regarding the use, or results of the use, of the information contained herein as regards to its correctness, accuracy, reliability, currency or otherwise. The Department of Water, Land and Biodiversity Conservation and its employees expressly disclaims all liability or responsibility to any person using the information or advice. Information contained in this document is correct at the time of writing. © Government of South Australia, through the Department of Water, Land and Biodiversity Conservation 2007 This work is Copyright. Apart from any use permitted under the Copyright Act 1968 (Cwlth), no part may be reproduced by any process without prior written permission obtained from the Department of Water, Land and Biodiversity Conservation. Requests and enquiries concerning reproduction and rights should be directed to the Chief Executive, Department of Water, Land and Biodiversity Conservation, GPO Box 2834, Adelaide SA 5001. ISBN-13 978-1-921218-45-3 Preferred way to cite this publication Teoh, K 2006, Assessment of Surface Water Resources of Patawalonga Catchment and the Impact of Farm Dam Development.
    [Show full text]
  • The Impact of Farm Dam Development on the Surface Water Resources of the South Para River Catchment
    DWLBC REPORT The Impact of Farm Dam Development on the Surface Water Resources of the South Para River Catchment 2003/19 The Impact of Farm Dam Development on the Surface Water Resources of the South Para River Catchment Kim Teoh Knowledge and Information Division Department of Water, Land and Biodiversity Conservation June 2006 Report DWLBC 2003/19 Knowledge and Information Division Department of Water, Land and Biodiversity Conservation 25 Grenfell Street, Adelaide GPO Box 2834, Adelaide SA 5001 Telephone National (08) 8463 6946 International +61 8 8463 6946 Fax National (08) 8463 6999 International +61 8 8463 6999 Website www.dwlbc.sa.gov.au Disclaimer Department of Water, Land and Biodiversity Conservation and its employees do not warrant or make any representation regarding the use, or results of the use, of the information contained herein as regards to its correctness, accuracy, reliability, currency or otherwise. The Department of Water, Land and Biodiversity Conservation and its employees expressly disclaims all liability or responsibility to any person using the information or advice. Information contained in this document is correct at the time of writing. © Government of South Australia, through the Department of Water, Land and Biodiversity Conservation 2007 This work is Copyright. Apart from any use permitted under the Copyright Act 1968 (Cwlth), no part may be reproduced by any process without prior written permission obtained from the Department of Water, Land and Biodiversity Conservation. Requests and enquiries concerning reproduction and rights should be directed to the Chief Executive, Department of Water, Land and Biodiversity Conservation, GPO Box 2834, Adelaide SA 5001.
    [Show full text]
  • Aquatic Ecosystem Condition Reports
    Water quality Information Sheet Aquatic ecosystem condition reports 2011 panel assessment of creeks and rivers in the Adelaide and Mount Lofty Ranges NRM region Issued September 2012 EPA984/12: This information sheet describes the outcome of the panel assessment of creeks and rivers in the Adelaide and Mount Lofty Ranges, NRM region based on monitoring data collected in 2011. Introduction The Environment Protection Authority (EPA) coordinates a monitoring, evaluation and reporting (MER) program on the aquatic ecosystem condition of South Australian creeks and rivers. This MER program is designed to meet several objectives: • Providing a statewide monitoring framework for creeks and rivers that revolves through the NRM regions with sufficient frequency to allow for State of the Environment Reporting purposes. • Describing aquatic ecosystem condition for broad general public understanding. • Identifying the key pressures and management responses to those pressures. • Providing a useful reporting format that can support environmental decision making within government, community and industry. This information sheet provides a summary of the scientific work used in assessing monitoring data from creeks and rivers. Aquatic ecosystem science is not always rigid and precise; it is often open to different interpretations in several respects. Therefore, the EPA has decided that the best way to assess the condition of streams is through an expert panel deliberation that uses a consistent descriptive modelling approach. The panel members comprised an environmental consultant, a biologist from the biomonitoring team at the Australian Water Quality Centre (AWQC), and two biologists from the EPA (the authors of this assessment). All have at least 10 years experience in monitoring and assessing a range of streams across South Australia.
    [Show full text]
  • Upper Onkaparinga River Catchment
    Onkaparinga Catchment Water Management Board Upper Onkaparinga River Catchment Floodplain Mapping Report Principal Contacts Ken Schalk April 2004 Ref No 20020041 Upper Onkaparinga River Catchment Floodplain Mapping Report prepared for Onkaparinga Catchment Water Management Board in association with Adelaide Hills Council Bureau of Meteorology City of Onkaparinga District Council of Mount Barker Transport SA Table of Contents Table of Contents Onkaparinga Catchment Water Management Board Upper Onkaparinga River Catchment Floodplain Mapping Report 1. Introduction 1 2. Data Sources 2 2.1 Hydrology 2 2.2 Survey Data 2 2.2.1 Photogrammetry 2 2.2.2 Ground Survey 3 2.2.3 Existing Survey and Cross Section Data 3 2.3 Bridge and Culvert Structures 3 3. Methodology 4 3.1 Modelling Regime 4 3.2 Computer Processes and Software 4 4. Hydraulic Modelling 6 4.1 Detailed Hydraulic Modelling Description 6 4.2 Boundary Conditions 6 4.3 Mannings Roughness Coefficients 6 4.4 Cross-Sections 8 4.5 Bridges 8 4.6 Blocked Obstructions 8 4.7 Model Validation 9 4.7.1 Review of August 1992 Flood Data 9 4.8 Model Details 11 4.8.1 Onkaparinga River (Mylor to Charleston) 11 4.8.2 Aldgate and Leslie Creeks (Aldgate, Stirling and Mylor) 11 4.8.3 Cox Creek (Bridgewater) 12 4.8.4 Hahndorf Creek (Hahndorf) 14 4.8.5 Junction Creek (Balhannah) 14 4.8.6 Echunga 14 4.8.7 Lobethal 16 4.8.8 Lenswood 16 4.8.9 Kangarilla 16 4.9 Hazard Mapping 18 4.9.1 Hazard Map Calculations 20 4.10 Flood Risk Assessment 20 4.11 Flow - Stage Relationships at Gauging Station Locations 21 5.
    [Show full text]