NATO Science Series II: Mathematics, Physics and Chemistry, 2003
Risk is present in all aspects of water resources management, as in all other managed resources. ... more Risk is present in all aspects of water resources management, as in all other managed resources. It arises from uncertainty with respect to outcomes and their consequences, and the fact that some of consequences will be negative. In long-range planning for water resources management, the uncertainty results from the variability of hydrology in the coming years and the possibility of climate change over decades, as well as from the changing set of values and demands imposed on the water sector by society, directly and through its political bodies. In the shorter term, operation of water resources systems is subject to additional types of uncertainties, some resulting from geophysical hazards.
The management of regional water resources encompasses allocation of water to users, expansion of... more The management of regional water resources encompasses allocation of water to users, expansion of facilities, transportation of water and water inventory management. These activities are distributed over time and space, and some may depend on hydrological conditions. They are also interdependent in many ways. A mathematical linear programming model is used to find optimal solutions in a budget and water resources constrained environment. Incorporating water quality management in the model makes the problem nonlinear. A successive linear approximation iterative scheme is applied to cope with nonlinearities. Its application is demonstrated to a problem of finding a minimum cost solution, considering water quantities, salinization of a source, saline return flows, desalination and salinity damages.
... Much of the planning and design is done by TAHAL Water Planning for Israel Ltd. a publicy own... more ... Much of the planning and design is done by TAHAL Water Planning for Israel Ltd. a publicy owned company. ... In addition to these methods, which merely describe the aquifer's behaviour and do not attempt to yield an optimal policy, there are op timization models. ...
... Shamie: Watee Distribution Systems 29 тагу water network of New York ... pressure at the extr... more ... Shamie: Watee Distribution Systems 29 тагу water network of New York ... pressure at the extreme end of the system, and a measure of the degradation in the first per-formance index (weighted residual pressure) that would result from outage of one major link in the network. ...
Journal American Water Works Association, May 1, 1979
A procedure is described that uses the history of main breaks to forecast how the number of break... more A procedure is described that uses the history of main breaks to forecast how the number of breaks would change with time if the pipe were not replaced. A separate analysis predicts the failure rate of newly installed pipes. These forecasts are combined with cost data and a discount ...
A procedure is described that uses the history of main breaks to forecast how the number of break... more A procedure is described that uses the history of main breaks to forecast how the number of breaks would change with time if the pipe were not replaced; a separate analysis predicts the failure rate of newly installed pipes. These forecasts are combined with cost data and a discount rate that accounts for inflation to determine the optimal replacement date.
Urban development above a phreatic aquifer can reduce substantially the amount of water that infi... more Urban development above a phreatic aquifer can reduce substantially the amount of water that infiltrates and recharges the water resource. In Israel's coastal plain, the area of which is about 1900 km 2 , 650 km 2 are already urban, and another 625 km 2 are expected to become urban by 2020. This paper presents the motivation, methodology and results of estimating the present and expected future loss of recharge to the aquifer, as a consequence of urban development above it. The paper ends with recommendations for implementing water-sensitive urban planning.
NATO Science Series II: Mathematics, Physics and Chemistry, 2003
Risk is present in all aspects of water resources management, as in all other managed resources. ... more Risk is present in all aspects of water resources management, as in all other managed resources. It arises from uncertainty with respect to outcomes and their consequences, and the fact that some of consequences will be negative. In long-range planning for water resources management, the uncertainty results from the variability of hydrology in the coming years and the possibility of climate change over decades, as well as from the changing set of values and demands imposed on the water sector by society, directly and through its political bodies. In the shorter term, operation of water resources systems is subject to additional types of uncertainties, some resulting from geophysical hazards.
The management of regional water resources encompasses allocation of water to users, expansion of... more The management of regional water resources encompasses allocation of water to users, expansion of facilities, transportation of water and water inventory management. These activities are distributed over time and space, and some may depend on hydrological conditions. They are also interdependent in many ways. A mathematical linear programming model is used to find optimal solutions in a budget and water resources constrained environment. Incorporating water quality management in the model makes the problem nonlinear. A successive linear approximation iterative scheme is applied to cope with nonlinearities. Its application is demonstrated to a problem of finding a minimum cost solution, considering water quantities, salinization of a source, saline return flows, desalination and salinity damages.
... Much of the planning and design is done by TAHAL Water Planning for Israel Ltd. a publicy own... more ... Much of the planning and design is done by TAHAL Water Planning for Israel Ltd. a publicy owned company. ... In addition to these methods, which merely describe the aquifer's behaviour and do not attempt to yield an optimal policy, there are op timization models. ...
... Shamie: Watee Distribution Systems 29 тагу water network of New York ... pressure at the extr... more ... Shamie: Watee Distribution Systems 29 тагу water network of New York ... pressure at the extreme end of the system, and a measure of the degradation in the first per-formance index (weighted residual pressure) that would result from outage of one major link in the network. ...
Journal American Water Works Association, May 1, 1979
A procedure is described that uses the history of main breaks to forecast how the number of break... more A procedure is described that uses the history of main breaks to forecast how the number of breaks would change with time if the pipe were not replaced. A separate analysis predicts the failure rate of newly installed pipes. These forecasts are combined with cost data and a discount ...
A procedure is described that uses the history of main breaks to forecast how the number of break... more A procedure is described that uses the history of main breaks to forecast how the number of breaks would change with time if the pipe were not replaced; a separate analysis predicts the failure rate of newly installed pipes. These forecasts are combined with cost data and a discount rate that accounts for inflation to determine the optimal replacement date.
Urban development above a phreatic aquifer can reduce substantially the amount of water that infi... more Urban development above a phreatic aquifer can reduce substantially the amount of water that infiltrates and recharges the water resource. In Israel's coastal plain, the area of which is about 1900 km 2 , 650 km 2 are already urban, and another 625 km 2 are expected to become urban by 2020. This paper presents the motivation, methodology and results of estimating the present and expected future loss of recharge to the aquifer, as a consequence of urban development above it. The paper ends with recommendations for implementing water-sensitive urban planning.
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