Suchergebnisse

AbstractThe Environment Agency has a statutory duty to secure the proper use of water resources, which is now considered inter alia to include an economically efficient allocation of resources as far as is possible within the current legislation. This paper considers the practical extent to which water rights can be traded within the existing system of regulation as a means of (a) improving the economic efficiency of resource allocation, and (b) satisfying customer demand for additional supplies. Outline proposals are also made for deregulation of current legislation to encourage further trading through less restrictive regulation.

ABSTRACT The system of abstraction controls for irrigation in Scotland is one of local control orders where, to limit abstractions from any particular watercourse, the river purification authority must apply for an order from the Secretary of State for Scotland to cover abstractions from that one watercourse and its catchment. This contrasts sharply with the heavily protective system in England and Wales where the National Rivers Authority has statutory powers to license all abstractions. The purpose of this paper is to examine the abstraction control system in Scotland with a view to highlighting its advantages and limitations, and to suggest ways by which the system can be improved or made more effective.

As a result of the growing demand for additional water supplies, officials at the National Department of Water Affairs (DWA) continually monitor consumption patterns. The unlawful abstraction of water for irrigation purposes along the Axle and Liebenbergsvlei water transfer scheme, a South African river catchment, has been identified as a potential over-consumption hotspot. An investigation into the evolution of modern farming and irrigation developments along this important water transfer scheme found that restrictions on irrigation water abstraction have primarily focused on the water security of downstream urban and industrial users who receive water at a high assurance of supply. During periods of normal rainfall the authorities paid little attention to the existing use of water from the Liebenbergsvlei water transfer scheme. Subsequent restrictions placed on local water abstraction for irrigation has achieved mixed results. This paper focuses on the perspectives of irrigation farmers who may be unlawfully using water from the transfer scheme. Their views are compared with those expressed by the authorities on this issue, and the way in which the authorities attempt to regulate water use in the region within the confines of existing legislation. The responses from the different sectors were qualitatively analysed and suggested solutions have been formulated for further discussion. The study's major findings reveal that the contestation around water use for agricultural purposes will continue as long as the misunderstandings surrounding legal or illegal water use persist. As demand on water is escalating, it is considered important to put in place water security measures designed to safeguard the available water in light of scarcity. ; https://doi.org/10.4102/td.v6i1.128

As a result of the growing demand for additional water supplies, officials at the National Department of Water Affairs (DWA) continually monitor consumption patterns. The unlawful abstraction of water for irrigation purposes along the Axle and Liebenbergsvlei water transfer scheme, a South African river catchment, has been identified as a potential over-consumption hotspot. An investigation into the evolution of modern farming and irrigation developments along this important water transfer scheme found that restrictions on irrigation water abstraction have primarily focused on the water security of downstream urban and industrial users who receive water at a high assurance of supply. During periods of normal rainfall the authorities paid little attention to the existing use of water from the Liebenbergsvlei water transfer scheme. Subsequent restrictions placed on local water abstraction for irrigation has achieved mixed results. This paper focuses on the perspectives of irrigation farmers who may be unlawfully using water from the transfer scheme. Their views are compared with those expressed by the authorities on this issue, and the way in which the authorities attempt to regulate water use in the region within the confines of existing legislation. The responses from the different sectors were qualitatively analysed and suggested solutions have been formulated for further discussion.The study's major findings reveal that the contestation around water use for agricultural purposes will continue as long as the misunderstandings surrounding legal or illegal water use persist. As demand on water is escalating, it is considered important to put in place water security measures designed to safeguard the available water in light of scarcity.

AbstractChina's water abstraction policies are significant for illustrating the application of market-based instruments in a transitional and developing country and for shedding light on improving China's water management system. This article presents a new approach to analysing applications of market-based instruments for water resources in China. Expanding the analysis beyond a rational choice approach, it demonstrates the institutional dimension of policy implementation at the local level in China. Four peculiar features of China's water institutions influence local governments in dealing with water abstraction differently from how regulators might expect. This explains local governmental failures and the implementation of water abstraction policies in several ways, including the setting of charges at low levels, a lack of necessary monitoring and sanctions, few incentives to collect charges diligently, and failure to provide accessible information for the public.

China's water abstraction policies are significant for illustrating the application of market-based instruments in a transitional and developing country and for shedding light on improving China's water management system. This article presents a new approach to analysing applications of market-based instruments for water resources in China. Expanding the analysis beyond a rational choice approach, it demonstrates the institutional dimension of policy implementation at the local level in China. Four peculiar features of China's water institutions influence local governments in dealing with water abstraction differently from how regulators might expect. This explains local governmental failures and the implementation of water abstraction policies in several ways, including the setting of charges at low levels, a lack of necessary monitoring and sanctions, few incentives to collect charges diligently, and failure to provide accessible information for the public. (China Q/GIGA)

AbstractThe concept of environmental flows has been developed to manage human alteration of river flow regimes, as effective management requires an understanding of the ecological consequences of flow alteration. This study explores the concept of macroinvertebrate sensitivity to river flow alteration to establish robust quantitative relationships between biological indicators and hydrological pressures. Existing environmental flow classifications used by the environmental regulator for English rivers were tested using multilevel regression modelling. Results showed a weak relationship between the current abstraction sensitivity classification and macroinvertebrate response to flow pressure. An alternative approach, based on physically derived river types, was a better predictor of macroinvertebrate response. Intermediate sized lowland streams displayed the best model fit, while upland rivers exhibited poor model performance. A better understanding of the ecological response to flow variation in different river types could help water resource managers develop improved ecologically appropriate flow regimes, which support the integrity of river ecosystems.

Environment-related authorisations are a relevant issue for environmental management. They require a considerable effort by the authorities, and this might result in substantial delays for the citizens. Implementing those authorisation processes by means of e-government services would improve efficiency and, consequently, citizen satisfaction. Environment-related authorisations usually require a variety of geospatial information, and have to deal with administrative areas which do not match physical and ecological ones. They also have to integrate heterogeneous information in different formats, data models and languages, and provided by distinct organisations, even from different countries. This paper discusses how Spatial Data Infrastructures (SDIs) can deal with these problems in the environmental domain, while improving the level of service provision in terms of e-government applications. This is even more relevant within the European Union where there is a legal mandate to establish an SDI to support environmental policies and activities with an impact on the environment. As a proof-of-concept, an application to request and manage water abstraction authorisations, based on an SDI, is demonstrated. This application is part of SDIGER, a cross-border inter-administration SDI to support the water framework directive information access for the Adour–Garonne and Ebro River basins, that was a pilot project for the EU INSPIRE Directive. The introduction of this transactional e-government service modifies the administrative process of granting authorisations: it allows to re-use the effort in data capture made by the applicants in their requests, facilitates the submission of more feasible applications and reduces the workload of the office staff.