Resultados de búsqueda - "environmental flow"

Wake up to realities of river basin closure por Falkenmark, M., David, S.

“…Symptoms of poorly managed closed basins include groundwater overdraft, limited or no environmental flows, pollution and inequitable allocation of water. …”
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Hydrological modelling to assist water management in the Usangu wetlands, Tanzania por McCartney, Matthew P., Kashaigili, Japhet J., Lankford, B.A., Mahoo, H.F.

“…The model also shows that to maintain minimum downstream environmental flows requires a minimum inflow of 7m3s?1, which is approximately 65% greater than occurs currently. …”
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Modelling to evaluate the water resource implications of planned infrastructure development in the Lake Tana sub-basin, Ethiopia por Alemayehu, Tadesse, McCartney, Matthew P., Kebede, S.

“…For each scenario, the model was used to simulate water demand in three sectors (i.e. irrigation, hydropower and downstream environmental flows) over a 36-year period of varying flow and rainfall. …”
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Transforming agricultural water management through the water–energy–food nexus: trends, opportunities, barriers and solutions por Nhamo, L., Taguta, C., Mpandeli, S., Dirwai, Tinashe Lindel, Liphadzi, S., Mabhaudhi, T.

“…This entails reducing water consumption, increasing environmental flows, minimising waste and reusing resources in agriculture. …”
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Winners and losers of IWRM [Integrated Water Resources Management] in Tanzania por van Koppen, Barbara, Tarimo, A.K.P.R., Eeden, A. van, Manzungu, Emmanuel, Sumuni, P.M.

“…After the 1990s, the World Bank and other donors promoted IWRM with a strong focus on hydroelectric power development, River Basin Water Boards, transformation of the water right system into a taxation tool, and assessment of environmental flows. These practices became formalised in the National Water Policy (2002) and in the Water Resources Management Act (2009). …”
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Spatio-temporal distribution of water availability in Karnali-Mohana Basin, western Nepal: hydrological model development using multi-site calibration approach (Part-A) por Pandey, Vishnu Prasad, Dhaubanjar, Sanita, Bharati, Luna, Thapa, Bhesh Raj

“…The hydrological characterization made in this study are further used for climate change impact assessment (Part-B in the same journal), environmental flows assessment and evaluating trade-offs among various water development pathways, which are published elsewhere. …”
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Environmental and social values of river water: examples from the Menik Ganga, Sri Lanka por Dissanayake, Priyanka, Smakhtin, Vladimir U.

“…In this paper, the Menik Ganga (River) in southern Sri Lanka is used as a case study to attempt and evaluate the costs and benefits of environmental water allocations, referred to as ?environmental flows? (EF). In this study, a broad definition of EF is used: the components of EF evaluated include the requirements of the religious festival, the requirements of the Yala National Park, the requirements of the Pilinnawa Coastal Wetland and the requirements of the Yala Fishery Management Area, off the coast. …”
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Operational SWAT+ model: advancing seasonal forecasting in the Limpopo River Basin por Chambel-Leitão, P., Santos, F., Barreiros, D., Santos, H., Silva, Paulo, Madushanka, Thilina, Matheswaran, Karthikeyan, Muthuwatta, Lal P., Vickneswaran, Keerththanan, Retief, H., Dickens, Chris, Garcia Andarcia, Mariangel

“…This SWAT+ operational seasonal forecasting system for the LRB marks a significant step towards bridging a key knowledge gap in the basin to support better decision making on multiple water uses and users including provision for environmental flows. This seasonal forecasting system as a part of the larger river basin Digital Twin is designed to influence effective water resource management in the Southern African region.…”
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Quantification of the Land Potential for Scaling Agroforestry in South Asia por Ahmad, F., Uddin, M.M., Goparaju, L., Rizvi, J., Biradar, Chandrashekhar M.

“…Trees are an integral part of the sustainable farming practices that can withstand extreme weather events, pest risks, and optimize land and water productivity to achieve food, fuel, fodder and nutritional security while safeguarding the environmental flows. This study was undertaken to analyze the landscape potential for the South Asian region in the geospatial domain utilizing the FAO’s land suitability criteria. …”
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Performance assessment of irrigation water management in old lands of the Nile Delta of Egypt por El-Agha, Doaa E., David, S., Ghanem, A.M.

“…Rather the focus should first be on supplies to the main canal, accompanied by more precise on farm and water delivery practices at branch and tertiary levels, and ensuring that environmental flows are met. There is an added advantage of focusing on this tail end region of Egypt that this response would lessen vulnerability to reuse of polluted and saline water.…”
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Hydro-geology and water resources of Indus-Gangetic Basin: comparative analysis of issues and opportunities por Sharma, Bharat R.

“…Energy and agricultural sector policies followed also favour large scale exploitation of groundwater resources in the basin, which has led to water table decline and a reduction in environmental flows. In the Gangetic part of the basin, it is the economic water scarcity which is more prominent. …”
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Developing a foundational hydrological model for the Limpopo River Basin using the Soil and Water Assessment Tool Plus (SWAT+) por Gurusinghe, Thilina, Muthuwatta, Lal P., Matheswaran, Karthikeyan, Dickens, Chris

“…The next application will concentrate on integrating ECMWF seasonal rainfall forecasts to predict water availability at 310 sub-basins and key channel reaches critical for environmental flows in the LRB. An updated version of the SWAT+ LRB foundational model is currently in progress. …”
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Development and application of the FISHTRAC real-time remote monitoring tool for digital twinning of river basins in southern Africa por Kaiser-Reichel, A., Burnett, M., Dickens, Christopher, McNiel, T., Retief, H., Süßle, V., Garcia Andarcia, Mariangel, O’Brien, G. C.

“…Through the Digital Twin for management of water resources in the Limpopo River Basin we have an opportunity to integrate available sustainable environmental flows and water resource management technology into an integrated system, that will allow stakeholders of the Limpopo River and surrounding regions to understand, monitor and manage these resources for current and future generations. …”
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An integrated hydro-economic modelling framework to evaluate water allocation strategies II: scenario assessment por George, B.A., Malano, H.M.M., Davidson, B., Hellegers, Petra J.G.J., Bharati, Luna, Massuel, S.

“…Policy makers identified a number of different but plausible scenarios that could apply in the sub-basin, involving; supplying additional urban demand from agricultural allocations of water, implementing a number of demand management strategies, changing the timing of releases for hydropower generation, changing the crops grown under irrigation, reducing existing stream flows and allowing for more environmental flows. The framework chosen to undertake this assessment was a simulation model that measures and compares the economic values of water allocation scenarios determined from a water allocation model that accounts for supplies of groundwater and surface water across a number of regions and over a variety of uses. …”
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Trade-offs or synergies?: assessment of ecosystem services in multi-use small reservoirs in Burkina Faso [Abstract only] por Balana, Bedru

“…On the other hand, SRs may have unwanted side-effects such as environmental deterioration, decrease in water quality, adverse health impacts (e.g., harbour mosquitos), and reduce environmental flows and ground water recharge. Thus, SRs’ performance need to be assessed against these multiple benefits/dis-benefits and whether there exist trade-offs or synergetic relationship. …”
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