Working for Wetlands Rehabilitation Programme, Free State Basic
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Investigation of Stratification in the Vaal Dam Using Electrical Conductivity Profiling
Investigation of Stratification in the Vaal Dam using Electrical Conductivity Profiling Reveck Hariram*, Nicolene Van der Walt** Rand Water, Scientific Services Division, P.O. Box 1127, Johannesburg, 2000, South Africa E-mail: [email protected] ; [email protected]; Tel: +2711 682 0479/0735 ABSTRACT water to more than 11 million people in South Africa. Purifying it and selling it to various Municipalities, mines and industries. The Vaal Dam is continuously monitored to provide an early warning of changes to water quality so that the configuration of the water treatment plant can be adapted to ensure only the best quality water is supplied to our customers. er quality by sampling bi-monthly at four strategically located sampling sites. The two major tributaries entering the Vaal Dam are monitored, namely the Wilge and Vaal River respectively. Furthermore, the water quality at the confluence of these tributaries is also monitored together with the most essential It has been found that the electrical conductivity in the Vaal Dam has been relatively consistent over the years (2003 to 2014) with an average of 25 mS/m. The salinity of the Vaal Dam is greatly influenced by the water quality of the two major tributaries (Wilge and Vaal) and the source water from Lesotho (via Lesotho Highlands Water Scheme) that feeds into the Wilge tributary. The purpose of this study was to investigate and verify if any stratification occurs in the Vaal Dam as previous studies indicated no stratification. In 2014, a new monitoring tool was utilized called the CastAway- CTD. The instrument can be lowered into a river or dam capturing data such as GPS position, conductivity and depth along the vertical profile. -
The Search for Cryptosporidium Oocysts and Giardia Cysts in Source Water Used for Purification
The search for Cryptosporidium oocysts and Giardia cysts in source water used for purification M Grundlingh* and CME de Wet Rand Water, Microbiology Laboratory, Scientific Services, PO Box 3526, Vereeniging 1930, South Africa Abstract Cryptosporidium and Giardia are intestinal parasites which cause a self limiting gastro-enteritis, in healthy people but severe and often fatal disease in immuno-compromised individuals. Both organisms are characterised by the ability to survive in an aquatic environment with Cryptosporidium having a high tolerance to most of the drinking water disinfectants. The absence of bacteria associated with feacal pollution does not necessarily indicate the absence of Cryptosporidium or Giardia. Being a common cause of waterborne disease, the requirement for detecting the presence of these organisms in environmental and treated water samples is growing. Although cysts and oocysts can be found in natural waters from any source, the risks of contamination are much greater in surface waters than in ground waters. A number of waterborne outbreaks of cryptosporidiosis, from potable and recreational water have been recorded. In many cases these outbreaks have occurred from water that complies to current microbiology standards. Introduction finished waters during the treatment process, which may result in additional interference. Organisms and debris that autofluoresce or The potential occurrence of Cryptosporidium oocysts and Giardia demonstrate non-specific fluorescence, such as algal and yeast cysts in water supplies is a significant issue for the water industry cells, when examined by epifluorescent microscopy, may interfere since outbreaks have been reported in Milwaukee, New Jersey, with the detection of oocysts and cysts and contribute to false North West (UK) and more recently in Sydney, Australia. -
Feasibility Study of Botterkloof and Merino II Hydropower Sites
Feasibility Study of Botterkloof and Merino II Hydropower Sites Presented By BJ Rochecouste Collet W: aurecongroup.com E: [email protected] T: +27 12 427 3144 History & Treaty Lesotho Highlands Water Project delivers water from the Mountains of Lesotho to South Africa by means of dams and tunnels constructed which discharges in the Ash River, near Clarens, Free State Province. Several phases were envisaged. A Treaty between the two governments was signed to ensure the delivery of an average flow of 24.5 m3/s (based on an annual volume) which is applicable to Phase 1 (1A and 1B). New Treaty for Phase 2 states that delivery of (additional) water from Phase 2 would be “on-demand” based on the volume required to compensate the yield of the Vaal catchment (including existing transfers). Scope of Services Aurecon Scope of Services Include: •The Environmental studies; •The Geotechnical Investigation; •The assistance for the WUL application ; •The Interconnections studies; •The Technical Feasibility Study; •Necessary assistance in the bid submission to the DoE for the REIPP programme; •The Detailed Design, Project Management & Construction Supervision. Ash River Reserve Flow (Minimum Maintenance Low Flow): 50 l/s. Phase 1 (A & B) annual flowrate: 24.5 m3/s. Flows into the Liebensbergvlei, then into the Wilge River and thereafter into the Vaal River. Serious erosion problems which lead to construction of several structures to reduce the flow velocity and minimise erosion. Hydrology & Future Flows Year Increase in Yield from Total Mean Annual Flow Phase 2 (m3/s) (m3/s) 2012 - 24.5 2014 - 24.5 2020 5.0 29.5 2025 5.0 29.5 2026 5.2 29.7 2030 6.8 31.3 2034 8.5 33.0 2038 10.1 34.6 Hydrology & Future Flows (Cont.) Botterkloof/Stortemelk Site Project Location The Stortemelk Site is located approximately 1.6 km downstream of the Ash River Outfall at the existing Boston A Dam. -
Conference Proceedings 2006
FOSAF THE FEDERATION OF SOUTHERN AFRICAN FLYFISHERS PROCEEDINGS OF THE 10 TH YELLOWFISH WORKING GROUP CONFERENCE STERKFONTEIN DAM, HARRISMITH 07 – 09 APRIL 2006 Edited by Peter Arderne PRINTING & DISTRIBUTION SPONSORED BY: sappi 1 CONTENTS Page List of participants 3 Press release 4 Chairman’s address -Bill Mincher 5 The effects of pollution on fish and people – Dr Steve Mitchell 7 DWAF Quality Status Report – Upper Vaal Management Area 2000 – 2005 - Riana 9 Munnik Water: The full picture of quality management & technology demand – Dries Louw 17 Fish kills in the Vaal: What went wrong? – Francois van Wyk 18 Water Pollution: The viewpoint of Eco-Care Trust – Mornē Viljoen 19 Why the fish kills in the Vaal? –Synthesis of the five preceding presentations 22 – Dr Steve Mitchell The Elands River Yellowfish Conservation Area – George McAllister 23 Status of the yellowfish populations in Limpopo Province – Paul Fouche 25 North West provincial report on the status of the yellowfish species – Daan Buijs & 34 Hermien Roux Status of yellowfish in KZN Province – Rob Karssing 40 Status of the yellowfish populations in the Western Cape – Dean Impson 44 Regional Report: Northern Cape (post meeting)– Ramogale Sekwele 50 Yellowfish conservation in the Free State Province – Pierre de Villiers 63 A bottom-up approach to freshwater conservation in the Orange Vaal River basin – 66 Pierre de Villiers Status of the yellowfish populations in Gauteng Province – Piet Muller 69 Yellowfish research: A reality to face – Dr Wynand Vlok 72 Assessing the distribution & flow requirements of endemic cyprinids in the Olifants- 86 Doring river system - Bruce Paxton Yellowfish genetics projects update – Dr Wynand Vlok on behalf of Prof. -
Review of Existing Infrastructure in the Orange River Catchment
Study Name: Orange River Integrated Water Resources Management Plan Report Title: Review of Existing Infrastructure in the Orange River Catchment Submitted By: WRP Consulting Engineers, Jeffares and Green, Sechaba Consulting, WCE Pty Ltd, Water Surveys Botswana (Pty) Ltd Authors: A Jeleni, H Mare Date of Issue: November 2007 Distribution: Botswana: DWA: 2 copies (Katai, Setloboko) Lesotho: Commissioner of Water: 2 copies (Ramosoeu, Nthathakane) Namibia: MAWRD: 2 copies (Amakali) South Africa: DWAF: 2 copies (Pyke, van Niekerk) GTZ: 2 copies (Vogel, Mpho) Reports: Review of Existing Infrastructure in the Orange River Catchment Review of Surface Hydrology in the Orange River Catchment Flood Management Evaluation of the Orange River Review of Groundwater Resources in the Orange River Catchment Environmental Considerations Pertaining to the Orange River Summary of Water Requirements from the Orange River Water Quality in the Orange River Demographic and Economic Activity in the four Orange Basin States Current Analytical Methods and Technical Capacity of the four Orange Basin States Institutional Structures in the four Orange Basin States Legislation and Legal Issues Surrounding the Orange River Catchment Summary Report TABLE OF CONTENTS 1 INTRODUCTION ..................................................................................................................... 6 1.1 General ......................................................................................................................... 6 1.2 Objective of the study ................................................................................................ -
Labeo Capensis (Orange River Mudfish) Ecological Risk Screening Summary
Orange River Mudfish (Labeo capensis) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, 2014 Revised, May and July 2019 Web Version, 9/19/2019 Image: G. A. Boulenger. Public domain. Available: https://archive.org/stream/catalogueoffres01brit/catalogueoffres01brit. (July 2019). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2019): “Africa: within the drainage basin of the Orange-Vaal River system [located in Lesotho, Namibia, and South Africa] to which it is possibly restricted. Hitherto thought to occur in the Limpopo system and in southern Cape watersheds [South Africa] which records may be erroneous.” From Barkhuizen et al. (2017): “Native: Lesotho; Namibia; South Africa (Eastern Cape Province - Introduced, Free State, Gauteng, Mpumalanga, Northern Cape Province, North-West Province)” 1 Status in the United States This species has not been reported as introduced or established in the United States. There is no indication that this species is in trade in the United States. Means of Introductions in the United States This species has not been reported as introduced or established in the United States. Remarks A previous version of this ERSS was published in 2014. 2 Biology and Ecology Taxonomic Hierarchy and Taxonomic Standing From ITIS (2019): “Kingdom Animalia Subkingdom Bilateria Infrakingdom Deuterostomia Phylum Chordata Subphylum Vertebrata Infraphylum Gnathostomata Superclass Actinopterygii Class Teleostei Superorder Ostariophysi Order Cypriniformes Superfamily Cyprinoidea Family Cyprinidae Genus Labeo Species Labeo capensis (Smith, 1841)” From Fricke et al. (2019): “Current status: Valid as Labeo capensis (Smith 1841). Cyprinidae: Labeoninae.” Size, Weight, and Age Range From Froese and Pauly (2019): “Max length : 50.0 cm FL male/unsexed; [de Moor and Bruton 1988]; common length : 45.0 cm FL male/unsexed; [Lévêque and Daget 1984]; max. -
The Maloti Drakensberg Experience See Travel Map Inside This Flap❯❯❯
exploring the maloti drakensberg route the maloti drakensberg experience see travel map inside this flap❯❯❯ the maloti drakensberg experience the maloti drakensberg experience …the person who practices ecotourism has the opportunity of immersing him or herself in nature in a way that most people cannot enjoy in their routine, urban existences. This person “will eventually acquire a consciousness and knowledge of the natural environment, together with its cultural aspects, that will convert him or her into somebody keenly involved in conservation issues… héctor ceballos-lascuráin internationally renowned ecotourism expert” travel tips for the maloti drakensberg region Eastern Cape Tourism Board +27 (0)43 701 9600 www.ectb.co.za, [email protected] lesotho south africa Ezemvelo KZN Wildlife currency Maloti (M), divided into 100 lisente (cents), have currency The Rand (R) is divided into 100 cents. Most +27 (0)33 845 1999 an equivalent value to South African rand which are used traveller’s cheques are accepted at banks and at some shops www.kznwildlife.com; [email protected] interchangeably in Lesotho. Note that Maloti are not accepted and hotels. Major credit cards are accepted in most towns. Free State Tourism Authority in South Africa in place of rand. banks All towns will have at least one bank. Open Mon to Fri: +27 (0)51 411 4300 Traveller’s cheques and major credit cards are generally 09h00–15h30, Sat: 09h00–11h00. Autobanks (or ATMs) are www.dteea.fs.gov.za accepted in Maseru. All foreign currency exchange should be found in most towns and operate on a 24-hour basis. -
Biodiversity Plan V1.0 Free State Province Technical Report (FSDETEA/BPFS/2016 1.0)
Biodiversity Plan v1.0 Free State Province Technical Report (FSDETEA/BPFS/2016_1.0) DRAFT 1 JUNE 2016 Map: Collins, N.B. 2015. Free State Province Biodiversity Plan: CBA map. Report Title: Free State Province Biodiversity Plan: Technical Report v1.0 Free State Department of Economic, Small Business Development, Tourism and Environmental Affairs. Internal Report. Date: $20 June 2016 ______________________________ Version: 1.0 Authors & contact details: Nacelle Collins Free State Department of Economic Development, Tourism and Environmental Affairs [email protected] 051 4004775 082 4499012 Physical address: 34 Bojonala Buidling Markgraaf street Bloemfontein 9300 Postal address: Private Bag X20801 Bloemfontein 9300 Citation: Report: Collins, N.B. 2016. Free State Province Biodiversity Plan: Technical Report v1.0. Free State Department of Economic, Small Business Development, Tourism and Environmental Affairs. Internal Report. 1. Summary $what is a biodiversity plan This report contains the technical information that details the rationale and methods followed to produce the first terrestrial biodiversity plan for the Free State Province. Because of low confidence in the aquatic data that were available at the time of developing the plan, the aquatic component is not included herein and will be released as a separate report. The biodiversity plan was developed with cognisance of the requirements for the determination of bioregions and the preparation and publication of bioregional plans (DEAT, 2009). To this extent the two main products of this process are: • A map indicating the different terrestrial categories (Protected, Critical Biodiversity Areas, Ecological Support Areas, Other and Degraded) • Land-use guidelines for the above mentioned categories This plan represents the first attempt at collating all terrestrial biodiversity and ecological data into a single system from which it can be interrogated and assessed. -
Rivers of South Africa Hi Friends
A Newsletter for Manzi’s Water Wise Club Members May 2016 Rivers of South Africa Hi Friends, This month we are exploring our rivers. We may take them for granted but they offer us great services. Rivers provide a home and food to a variety of animals. You will find lots of plants, insects, birds, freshwater animals and land animals near and in a river. You can say rivers are rich with different kinds of living things. These living things play different roles such as cleaning the river and providing food in the river for other animals. Rivers carry water and nutrients and they play an important part in the water cycle. We use rivers for water supply which we use for drinking, in our homes, watering in farms, making products in factories and generating electricity. Sailing, taking goods from one place to another and water sports such as swimming, skiing and fishing happens in most rivers. Have you ever wondered where rivers begin and end? Well friends, rivers begin high in the mountains or hills, or where a natural spring releases water from underground. They usually end by flowing into the ocean, sea or lake. The place where the river enters the ocean, sea or lake is called the mouth of the river. Usually there are lots of different living things there. Some rivers form tributaries of other rivers. A tributary is a stream or river that feeds into a larger stream or river. South Africa has the following major rivers: . Orange River (Lesotho, Free State & Northern Cape Provinces), Limpopo River (Limpopo Province), Vaal River (Mpumalanga, Gauteng, Free State & Northern Cape Provinces), Thukela River reprinted with permission withreprinted (Kwa-Zulu Natal Province), Olifants River – (Mpumalanga & Limpopo Provinces), Vol. -
The Bronkhorstspruit and Wilge River Conservancy Association (Gca067)
NOTICE OF OBJECTION AND REQUEST TO BE REGISTERED AS AN INTERESTED OR AFFECTED PARTY IN RESPECT OF THE FOLLOWING EXPLORATION RIGHTS AND ENVIROMENTAL AUTHORISATION APPLICATION: NAME OF APPLICANT: Rhino Oil & Gas PASA REF: 12/3/291ER, 12/3/294, 12/3/295, 12/3/317, 12/3/318 Please note my objection to the abovementioned applications to explore for oil and gas and please register me as an interested or affected party in all applications. NAME: Jackie Nightingale EMAIL ADDRESS: [email protected] REASON FOR Environmental INTEREST: Environmental Health Community Economic ISSUES & CONCERNS: Water Climate Change I reserve my right to elaborate and/or add to these issues and concerns at a later stage. Jackie Nightingale ………………………………………………………………………………. SIGNATURE EMAIL TO: SLR Stella Moeketse [email protected] THE BRONKHORSTSPRUIT AND WILGE RIVER CONSERVANCY ASSOCIATION (GCA067) email : [email protected] contact nr : 082 442 2483 20 Sept 2016 To: The Regional Manager DMR Braamfontein [email protected] [email protected] To : Rhino Oil and Gas Exploration SA Att : SLR [email protected] [email protected] COMMENTS AND OBJECTION – 12/3/294ER - EIR AND EMP FOR AN EXPLORATION RIGHT APPLICATION FOR PETROLEUM PRODUCTS ON VARIOUS FARMS IN THE FREE STATE , MPUMALANGA, GAUTENG – Steynsrus, Frankfort, Petrus Steyn, Heilbron, Vrede,Standerton,Villiers, Oranjeville The Bronkhorstspruit and Wilge River Conservancy Ass is a constituted Association, operating in the greater catchment areas of the Bronkhorstspruit and Wilge river, with 150 concerned members. This Conservancy is affiliated to the Gauteng Conservancy Stewardship Association and The National Conservancy of SA. Although these application areas are far removed from our Conservancy borders, the impact it will have on the environment and health of all living in the said areas, and the probable impact on the wider communities around those areas, and South Africa as a whole, makes this Conservancy and all its members Interested and Affected Parties. -
Provincial Overview
Cultural Guiding Free State Course 1 Module # 1 – Component # 1 Provincial Overview Introduction The Free State is known as South Africa's ‘breadbasket’ or ‘granary of the country’ and more than 30,000 farms produces over 70% of the country's grain. The province also boasts, among others productive gold and diamond mines, majestic sandstone mountains and archaeological and paleontological treasures. To the local rugby supporter this is ‘Cheetah country’! The landscape is characterised by the grassy plains of South Africa’s interior plateau. This is South Africa’s geographical heart, caught up between the Vaal and Orange Rivers. It is landlocked by KwaZulu Natal, Mpumalanga, Gauteng, North West, the Eastern Cape and Northern Cape. The neighbouring Lesotho fits in the hollow of the province’s bean- like shape. The current borders date from 1994 when the Bantustans were abolished and included into the provinces of South Africa. It is the only Province of the former provinces of South Africa which did not undergo border changes (excluding the incorporation of the Qwa-Qwa Bantustan). The Republic of the Orange Free State (Afrikaans: Oranje-Vrystaat; Dutch: Oranje- Vrijstaat) was an independent Boer republic in southern Africa during the second half of the 19th century. After the Second Anglo Boer War (Great South African War) it was a British colony for a short period, until 1910 when it became one of the four provinces of the Union of South Africa. In 1995, it became known as the Free State Province, one of the nine provinces of South Africa under the new dispensation. -
Harrismith N5-R712 AIA.Pdf
Phase 1 Archaeological Impact Assessment of the proposed new National Route 5 / R712 interchange and Wilge River bridge alterations and additions, Harrismith, FS Province. Report prepared for Terraworks Environmental Consultants PO Box 28204, Danhof, 9310 by Archaeological Impacts Unit National Museum, PO Box 266, Bloemfontein Executive Summary At the request of Terraworks Environmental Consultants, a Phase 1 Archaeological Impact Assessment was carried out in five designated areas along the N5 national road outside Harrismith where anticipated development calls for several road alterations. New intersection at the N5 / R712 interchange: An unmarked graveyard is located within the demarcated area. The site is covers approximately 70 m2 and contains a number of unmarked grave mounds. The graveyard is considered of high to medium heritage significance and assigned the rating of Generally Protected A (GP.A). Destruction and removal of burial grounds and graves permit applications should be directed to the SAHRA Burial Grounds and Graves (BGG) Unit. Alternatively it is recommended that the graveyard area is to be avoided, and that a graveyard management plan is included as part of the overall management plan for the duration of the project. Preservation of the site will require that the area is properly demarcated and fenced off with at least a 20m buffer / no development zone placed around the graveyard. Construction of an additional passing lane at the Nuwejaarspruit Bridge: The site is regarded as of low archaeological significance and is assigned a rating of Generally Protected C (GP.C). Construction of a new access lane between the N5 and the Hamilton Bridge: The site is regarded as of low archaeological significance and is assigned a rating of Generally Protected C (GP.C).