Welcome to the first surface water quantity report of the Orange-Senqu River Commission (ORASECOM), for the hydrological year 2020-2021. For Read more
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2020-2021 Orange-Senqu Surface Water Quantity Synoptic Analysis
Khakea-Bray Transboundary Dolomite Aquifer Recharge Assessment
Documentation and Data: A read-only folder structure of all reports, data, and models related to the STAS can be accessed Read more
Improving Groundwater Knowledge in Selected Transboundary Aquifers
Documentation and Data: A read-only folder structure of all reports, data, and models related to this study can be accessed Read more
Stampriet Transboundary Aquifer System (STAS) – Governance of Groundwater Resources in Transboundary Aquifers (GGRETA) Project
Documentation: A read-only folder structure of all reports, data, and models related to the STAS can be accessed from here: Read more
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fish
Water Resources Quality Joint Basin Surveys (JBSs)
- Author:Rapule Pule
- Post date:1 April, 2016
- Categories:Biota and Ecosystems
The second 5-yearly comprehensive Joint Basin Survey (JBS2) of the quality of the water resources of the Orange-Senqu River Basin was undertaken in 2015. This is one of the programmes of ORASECOM aimed at advising the State Parties on the development, use, and conservation of the water resources of the Basin. The surveys are structured into four components, namely (i) Aquatic […]
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Environmental Flow Requirements for the Orange-Senqu Basin (WP5)
- Author:Bennie Haasbroek
- Post date:27 January, 2014
- Categories:Biota and Ecosystems,Surface Water Resources
Objectives The main objective for this Work Package is to assess Environmental Flow Requirements (EFRs) at selected key areas of the Orange River Basin at an “Intermediate Level”. Main Activities The main activities included: A scoping level assessment of ecological and socio-cultural condition and importance across the basin. Delineation into Management Resource Units and selection of […]
Read more POPs, PAHs and elemental levels in sediment, fish and wild bird eggs in the Orange–Senqu River Basin
- Author:Bennie Haasbroek
- Post date:14 November, 2013
- Categories:Biota and Ecosystems,Surface Water Resources
Introduction Four southern African countries, Lesotho, South Africa, Botswana, and Namibia share the basin of the Orange-Senqu River and are Parties to the Stockholm Convention (SC) on Persistent Organic Pollutants (POPs). Currently, the SC targets 21 chemicals and classes of chemicals. Previously, the research in the Orange-Senqu Basin on POPs concentrated on pesticide POPs such as DDT. Only recently […]
Read more- TAgs:fish, instream, monitoring, POPs, sediment toxicity, wild birds
Baseline monitoring of aquatic ecosystem health in the Orange-Senqu River Basin
- Author:Bennie Haasbroek
- Post date:14 November, 2013
- Categories:Biota and Ecosystems,Surface Water Resources
Purpose The specific purpose of this assignment was to undertake the first baseline monitoring of aquatic ecosystem health in the Orange-Senqu River System and to support the broader joint baseline survey. The focus of this specific assignment was to investigate the Aquatic Ecosystem Health of the Orange-Senqu River System and includes a detailed assessment of […]
Read more Environmental Flow Requirements of the Fish River and the Orange-Senqu River Mouth
- Author:Bennie Haasbroek
- Post date:24 October, 2013
- Categories:Biota and Ecosystems,Surface Water Resources
Overview The Orange-Senqu River riparian States (Botswana, Lesotho, Namibia and South Africa) are committed to jointly addressing threats to the shared water resources of the Basin. This is reflected in bilateral and basin-wide agreements between the riparian states and led to the formation of the Orange-Senqu River Commission (ORASECOM) in 2000. The ‘Orange-Senqu Strategic Action […]
Read more Joint Baseline Survey
- Author:Bennie Haasbroek
- Post date:25 September, 2013
- Categories:Biota and Ecosystems,Surface Water Resources
Overview The Joint Baseline Survey consisted of 3 separately funded studies undertaken for ORASECOM on the Orange-Senqu River Basin. The studies focussed on aquatic ecosystem health, environmental toxicity and the benchmarking of environmental laboratories. The 3 studies were as follow: Baseline monitoring of aquatic ecosystem health in the Orange-Senqu river basin (European Commission Funded) POPs, […]
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