hydrologic basin Articles
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Improving kinematic wave routing scheme in Community Land Model
Version 3.5 of Community Land Model (CLM) has incorporated a river routing module, called the River Transport Model (RTM), to simulate the runoff routing process over a hydrologic basin. RTM treats river routing as a linear reservoir process propagated through a gridded domain. Because the flow velocity at each grid is set as a constant, RTM cannot simulate river routing well. In this paper, we ...
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The drainage of lake ‘L'Estany’ in Spain
In the 18th century, the practice of drying up the wetlands, marshy or stagnant water areas expanded throughout Europe in order to avoid the malaria fevers that the population periodically suffered and to recover land for farming. This communication describes the current knowledge about the history of the process of drying in various hydrological basins as well as the works in the endorheic ...
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Internal phosphorus load in a mexican reservoir: Forecast and validation
To determine the internal phosphorus load (IPL) as a function of redox potential (Eh) in a Mexican reservoir, we extrapolate the results from a phosphorus (P) release experiment to temporal and spatial variations of Eh in sediments, obtaining an IPL‐Eh of 24.2 ± 2.5 t/yr. This result is compared to the P mass balance (MB) in the reservoir, where the IPL‐MB is determined as the difference ...
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Modeling of temporal groundwater level variations based on a Kalman filter adaptation algorithm with exogenous inputs
Reliable temporal modelling of groundwater level is significant for efficient water resources management in hydrological basins and for the prevention of possible desertification effects. In this work we propose a stochastic method of temporal monitoring and prediction that can incorporate auxiliary information. More specifically, we model the temporal (mean annual and biannual) variation of ...
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Down-scaling pan-European water scenarios to local visions in the Mediterranean: the Candelaro Basin case study in Italy
In the Mediterranean, the increasing social impacts of water scarcity are growing, but effective measures to manage such scarcity are difficult to implement due to the variability of stakeholders and the weak means to handle new policies. To ameliorate the future of water management in the region, communication between stakeholders has to be improved. The Water Framework Directive (WFD 2000) ...
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Rationalising water management policies: tube well development and resource use sustainability in Balochistan region of Pakistan
The groundwater driven agricultural production is increasingly under threat due to rapidly depleting groundwater table in upland Balochistan region of Pakistan. Both government and water users can be blamed for the foreseen disaster. The government’s policy for groundwater development following over estimation of groundwater reserves and the water user’s inefficient usage are the main reasons ...
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Waterquality and meteorological data - Greece
Background Thesprotia is one of the 51 prefectures in Greece and is located in the North-West of the country, 479 km from the capital Athens. The population of the prefecture is around 46,000 people. In the Pindos-Mountains arises the riverKalamas and empties after 115 km in the bay of Valtos (Ionian Sea). The river has large environmental influence on the area and is also in some areas famous ...
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Hydrology vs sovereignty: managing the hydrological interdependency of international rivers
In managing international rivers, governments are subject to two different boundaries. The socio-politically constructed boundaries governed by sovereignty and the physical boundaries imposed by the river's hydrology. The existence of a hydrological interdependency within an international basin means that “how” it is managed is important in constructing certainty in water supply. We compare two ...
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Response in the trophic state of stratified lakes to changes in hydrology and water level: potential effects of climate change
To determine how climate-induced changes in hydrology and water level may affect the trophic state (productivity) of stratified lakes, two relatively pristine dimictic temperate lakes in Wisconsin, USA, were examined. Both are closed-basin lakes that experience changes in water level and degradation in water quality during periods of high water. One, a seepage lake with no inlets or outlets, has ...
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Investing in Clean Agriculture: How California Can Strengthen Agriculture, Reduce Pollution and Save Money
Water management in most parts of the world has long followed a pattern of functional specialization (FS). Water agencies, companies, or departments of government supply water. Other agencies, companies, or departments supply wastewater services. Yet a third group is charged with flood control and storm runoff management. Of course some water utilities supply both water and wastewater ...
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Economies of Scale & Scope in River Basin Management
Water management in most parts of the world has long followed a pattern of functional specialization (FS). Water agencies, companies, or departments of government supply water. Other agencies, companies, or departments supply wastewater services. Yet a third group is charged with flood control and storm runoff management. Of course some water utilities supply both water and wastewater ...
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Application of SWOT analysis for the management of transboundary River Evros (Bulgaria, Greece, Turkey)
River Evros is a transboundary river flowing through Bulgaria, Greece and Turkey and coincides with the borderline among them for a considerable part of its length in the downstream part of its basin. River Evros is historically engaged to a long series of serious and devastating flood events with high socio–economical costs and environmental impacts on the riparian communities and even on ...
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Flood forecasting that considers the impact of hydraulic projects by an improved TOPMODEL model in the Wudaogou basin, Northeast China
Many hydraulic projects such as reservoirs, ponds and paddy fields as well as soil and water conservation engineering projects have been constructed to improve utilization of water resources upstream of the Wudaogou station basin in Northeast China in recent years. As a result, the local hydrological characteristics of the basin and the flood runoff and process have been changed. These ...
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Developing a joint operation framework for complex multiple reservoir systems
This study aims to present a joint operation framework for complex multiple reservoir systems to balance water supply between subsystems and between different stakeholders, and support decisions about water releases from the entire system and individual reservoirs effectively. The framework includes three steps: (1) aggregated virtual reservoirs and various subsystems are established to ...
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Characteristics and indications of hydrogen and oxygen isotopes distribution in lake ice body
Stable isotopes have been used to identify the characteristics of precipitation, evaporation, basin hydrology, and residence times. However, lakes in the cold regions are usually covered by ice for 5–6 months. To get a better understanding of stable isotopes characteristics and indications in lake ice bodies, ice and water were sampled during the icebound season in both the ice and water ...
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Streamflow prediction in ungauged basins through geomorphology-based hydrograph transposition
Geomorphology-based rainfall–runoff models are particularly helpful for predicting hydrology in ungauged basins. The robustness, generality and flexibility of the modelling approach make it able to deal with a wide variety of processes, events and scales. It allows a rainfall–runoff transfer function to be estimated for any basin without needing to measure discharge. The aim of ...
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Development of HydroClimatic Conceptual Streamflow (HCCS) model for tropical river basin
Combined processes of land-surface hydrology and hydroclimatology influence the response of a watershed to different hydroclimatic variables. In this paper, streamflow response of a watershed to hydrometeorological variables is investigated over a part of two tropical Indian rivers – Narmada and Mahanadi. The proposed HydroClimatic Conceptual Streamflow (HCCS) model is able to consider ...
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Towards better utilization of NEXRAD data in hydrology: an overview of Hydro-NEXRAD
With a very modest investment in computer hardware and the open-source local data manager (LDM) software from University Corporation for Atmospheric Research (UCAR) Unidata Program Center, a researcher can receive a variety of NEXRAD Level III rainfall products and the unprocessed Level II data in real-time from most NEXRAD radars in the USA. Alternatively, one can receive such data from the ...
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Inference of basin flood potential using nonlinear hysteresis effect of basin water storage: case study of the Koshi basin
Current flood forecasting tools for river basins subject to extreme seasonal monsoon rainfall are of limited value because they do not consider nonlinearity between basin hydrological properties. The goal of this study is to develop models that account for nonlinearity relationships in flood forecasting, which can aid future flood warning and evacuation system models. Water storage estimates ...
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Sensitivity analysis of climate change impact on the hydrology of the Litani Basin in Lebanon
The effects of climate change on the surface water of the Litani Basin (Lebanon) are examined. A series of 82 hypothetical scenarios are imposed on each of the sub–basins' precipitation and temperature data and an integrated hydrological model is developed while conserving the other climate variables. A sensitivity analysis approach is applied to examine the relative changes of runoff from the ...
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