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Full-Text Articles in Physical Sciences and Mathematics
Using Smart Water Meters In (Near) Real-Time On The Iwidget System, Michael G. Barry, Mark E. Purcell, Bradley J. Eck
Using Smart Water Meters In (Near) Real-Time On The Iwidget System, Michael G. Barry, Mark E. Purcell, Bradley J. Eck
International Conference on Hydroinformatics
Devices and technologies to measure and report water consumption at sub-daily intervals are growing in popularity. Data from these devices are creating new opportunities to manage the supply and demand of water in near real-time. To this end, The EU FP7 iWidget project is developing a state-of-the art analytics platform for the integrated management of urban water. Key challenges include extracting useful insights from high-resolution consumption data and exploring a range of decision-support tools for water utilities and consumers. To overcome these challenge iWIDGET is developing a distributed, open, robust, collaborative architecture that allows partners and utilities to collect and …
Compromise Programming Based Scenario Analysis Of Urban Water Systems Management Options: Case Study Of Kerman City, Saeed Nazari, S. Jamshid Mousavi, Koroush Behzadian, Zoran Kapelan
Compromise Programming Based Scenario Analysis Of Urban Water Systems Management Options: Case Study Of Kerman City, Saeed Nazari, S. Jamshid Mousavi, Koroush Behzadian, Zoran Kapelan
International Conference on Hydroinformatics
Supplying adequate water for urban water systems (UWSs) suffering from lack of water resources has always been a major concern in urban water management. Integrated simulation models are useful tools for sustainable planning and management of UWSs. This paper presents an integrated, conceptual modeling approach for simulation and analysis of an UWS by which different envisaged scenarios of water demand and resources are assessed. Other than water flow, the simulation model quantifies flows of energy, GHG emissions and cost in UWS. The performance of the developed model is demonstrated through its application to the UWS of Kerman City located in …
Decision Support Tool For Hydraulic Reliability Based Design Of Water Distribution Networks, Nemanja Trifunovic
Decision Support Tool For Hydraulic Reliability Based Design Of Water Distribution Networks, Nemanja Trifunovic
International Conference on Hydroinformatics
The manuscript describes the decision support tool for design and hydraulic reliability assessment of water distribution networks. The reliability analyses that have been conducted on geometric-, hydraulic- and economic grounds all reflect the complexity of network resilience that is still difficult to generalise or classify, as well as it is impossible to asses without full integration of all three aspects. The tool that aims to achieve this integration processes a preselected seed of network sources and (demand) nodes prepared in EPANET without any pipe connection. It is composed of the modules for generation of various connectivity layouts by applying the …
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
International Conference on Hydroinformatics
In recent years a major effort has been done to make water quality modelling tools available for water resources management at a river basin scale. The European water framework directive clear states that these tools must be used in making the diagnostic of surface water bodies water quality status and to anticipate the impact of measures to be implemented in order to achieve a good ecological status by 2015 in European waters. In order to make modelling tools usable by all the actors enrolled in water resources management process at river basins, these tools must be simple, user-friendly and robust. …
Fews-Waterways For Economically And Efficiently Navigating On Inland Waterways., Juzer F. Dhondia, Rolien Van Der Mark, Meeuwis Van Wirdum, R Smits
Fews-Waterways For Economically And Efficiently Navigating On Inland Waterways., Juzer F. Dhondia, Rolien Van Der Mark, Meeuwis Van Wirdum, R Smits
International Conference on Hydroinformatics
This paper describes the use of Delft-FEWS as part of a tool for navigating on Inland Waterways economically and efficiently. Delft-FEWS, as developed by Deltares, is an operational real time forecasting system which links data and models in real time. FEWS-Waterways forecasts water depth, , flow velocity, air clearance based on measured and forecasted hydrological and metrological data and current state of the waterway system. This feature of Delft-FEWS is used in an economy planner giving advice to ship masters with respect to: maximal cargo volume, minimum fuel consumption and the optimal ship speed in order to arrive in time …
Using Multi-Objective Optimization To Maximize Multiple Benefits For Sustainable Drainage Design, Jo-Fai Chow, Dragan A. Savić, David Fortune, Zoran Kapelan, Netsanet Mebrate
Using Multi-Objective Optimization To Maximize Multiple Benefits For Sustainable Drainage Design, Jo-Fai Chow, Dragan A. Savić, David Fortune, Zoran Kapelan, Netsanet Mebrate
International Conference on Hydroinformatics
For many years, drainage design was mainly about providing sufficient network capacity. This traditional approach had been successful with the aid of computer software and technical guidance. However, the drainage design criteria had been evolving due to rapid population growth, urbanisation, climate change and increasing sustainability awareness. Sustainable drainage systems that bring benefits in addition to water management have been recommended as better alternatives to conventional pipes and storages. Although the concepts and good practice guidance had already been communicated to decision makers and public for years, network capacity still remains a key design focus in many circumstances while the …
Setting Priorities On The Functional Status Of Hydraulic Structures In Mountainous Catchments, V. Juliette Cortes, Simone Sterlacchini, Thom Bogaard, Simone Frigerio, Luca Schenato, Alessandro Pasuto
Setting Priorities On The Functional Status Of Hydraulic Structures In Mountainous Catchments, V. Juliette Cortes, Simone Sterlacchini, Thom Bogaard, Simone Frigerio, Luca Schenato, Alessandro Pasuto
International Conference on Hydroinformatics
The frequent inspection of hydraulic structures in mountain catchments is important due to the changing interaction among water-related processes that take place in the context of hydro-meteorological hazards such as debris flow and flash floods. At first level inspections, reports from survey protocols carried out by trained citizen-volunteers are combined to provide an index that represent the status of the structure. The survey protocols aim at identifying needs for cleaning of obstructions or to pre-screen potential problems for a second level inspection or more technical and detailed inspection. Thus, reports are focused on the functional status for the following parameters: …
Model Predictive Control For Real Time Operation Of Hydraulic Structures For Draining The Operational Area Of The Dutch Water Authority Noorderzijlvest, Jan Talsma, Dirk Schwanenberg, Jan Gooijer, Klaas-Jan Van Heeringen, Bernhard P. J. Becker
Model Predictive Control For Real Time Operation Of Hydraulic Structures For Draining The Operational Area Of The Dutch Water Authority Noorderzijlvest, Jan Talsma, Dirk Schwanenberg, Jan Gooijer, Klaas-Jan Van Heeringen, Bernhard P. J. Becker
International Conference on Hydroinformatics
A pilot project in 2012 for the Dutch regional water authority Noorderzijlvest has shown that the application of Model Predictive Control (MPC) can increase the safety level of the water system during flood events by an anticipatory pre-release of water. Furthermore, energy costs of pumps can be reduced by making tactical use of the water storage and shifting pump activities during normal operating conditions to off-peak hours. In this paper, the extension of the pilot to a real time decision support system is presented. It supports the daily operation of 34 aggregated structures both in wet and dry periods by …
Dynamic Condition Approach To Study The Self-Purification Capacity Of Colombian Water Bodies Case: Cauca River And Salvajina Dam, Alberto Galvis, Isabel Cristina Hurtado, Carlos Martínez-Cano, Juan Gabriel Urrego
Dynamic Condition Approach To Study The Self-Purification Capacity Of Colombian Water Bodies Case: Cauca River And Salvajina Dam, Alberto Galvis, Isabel Cristina Hurtado, Carlos Martínez-Cano, Juan Gabriel Urrego
International Conference on Hydroinformatics
The impact on water resources caused by municipal wastewater discharge has become a critical and ever-growing environmental and public health problem. In order to be able to efficiently address this problem, it is important to adopt an integrated approach that includes a decrease in and control of contamination at its source. These principles have been successfully applied in the industrial sector and now these concepts are also being applied to integrated water resources management. In this context the conceptual model of the Three Steps Strategic Approach (3-SSA) was developed, consisting of: 1) minimization and prevention, 2) treatment for reuse and …
Towards A Decision Support System For Flood Management In A River Basin, Luis Vieira, Jose Pinho, Dirk Schwanenberg
Towards A Decision Support System For Flood Management In A River Basin, Luis Vieira, Jose Pinho, Dirk Schwanenberg
International Conference on Hydroinformatics
The world is experiencing a countless number of impressive and devastating floods causing a range of health impacts and risks with hundreds of thousands of people losing their lives or becoming homeless in a matter of hours. EU Floods Directive requires the developing of flood hazard maps, which may include information on hydrological and hydrodynamics characteristics of vulnerable regions, i.e. inundated areas and river flow discharges. Prediction of flood events can accurately be achieved by applying mathematical modelling for describing rainfall-runoff phenomena as well as surface waters hydrodynamics. Moreover, reservoirs can be properly operated in order to minimize flood events …
Decision Support System For Safety Warning Of Bridge – A Case Study In Central Taiwan, Chen-Min Kuo, Tao-Chang Yang, Jung-Chen Chou, Pao-Shan Yu
Decision Support System For Safety Warning Of Bridge – A Case Study In Central Taiwan, Chen-Min Kuo, Tao-Chang Yang, Jung-Chen Chou, Pao-Shan Yu
International Conference on Hydroinformatics
This study aims at developing the decision support system (DSS) for safety warning of bridge. In the DSS, real-time and forecasted radar rainfalls are used to predict flood stage, velocity and scouring depth around bridge piers for one to three hours ahead. The techniques adopted in the DSS include (1) measurement and correction models of radar rainfall, (2) a grid-based distributed rainfall-runoff model for simulating reservoir inflows, (3) models for predicting flood stages, velocities and scouring depths around bridge piers, and (4) ultimate analysis approaches for evaluating safety of pier foundation. The DSS can support the management department to decide …
Extending Occoquan Reservoir Water Quality Model For Stakeholder Involvement, Saurav Kumar, Adil Godrej, Thomas Grizzard
Extending Occoquan Reservoir Water Quality Model For Stakeholder Involvement, Saurav Kumar, Adil Godrej, Thomas Grizzard
International Conference on Hydroinformatics
There has been a paradigm change in water resource management as control of major point sources has improved, and recognition has grown of the importance of diffused pollution. Newer approaches, exemplified by watershed-scale management, emphasize stakeholder involvement to achieve better decision making through negotiation and compromise; and ultimately, better acceptance of final management solutions. Stakeholder participatory involvement in using complex water quality models to understand management scenarios and their impacts is, however, limited. Advanced receiving waterbody and watershed WQ models are complicated and require significant technical expertise in their understanding and use, which is a deterrent to non-expert stakeholder involvement. …
A Novel Decision Support System For Optimized Sewer Infrastructure Asset Management, Ben Ward, Dragan A. Savić
A Novel Decision Support System For Optimized Sewer Infrastructure Asset Management, Ben Ward, Dragan A. Savić
International Conference on Hydroinformatics
This paper approaches the sewerage asset management challenge from a UK perspective by outlining a comprehensive methodology capable of optimising the performance of sewerage infrastructure networks using a series of Hydroinformatic tools. In order to define, evaluate and forecast the future performance of sewerage assets, a unique deterioration model is established to predict the future condition of the network. The model analyses historic CCTV survey information to identify deterioration trends based on key pipe characteristics. Against, this improved understanding of past, current and future condition, a collapse rate is predicted by correlating historic failures against the observed sewer condition profiles. …
Overcoming Hurdles In Real Time Modeling, Thomas Walski
Overcoming Hurdles In Real Time Modeling, Thomas Walski
International Conference on Hydroinformatics
Real time modeling and control sounds easy. Get data from the SCADA system, run the appropriate model and push the results back to the controls. What could be difficult about that? Plenty. Anyone attempting to do this work probably has run into some of the institutional, technical and personal hurdles in actually making this sort of system work. This paper will discuss the hurdles and ways to deal with them. The most daunting hurdle is that of security. Most modeling happens on computers connected to the internet. Water utility managers are justifiably terrified of all the bad things that lurk …
Case-Based Reasoning Approach For Managing Water Quality Incidents In Distribution Systems, Stephen Robert Mounce, Richard Mounce, Joby Boxall
Case-Based Reasoning Approach For Managing Water Quality Incidents In Distribution Systems, Stephen Robert Mounce, Richard Mounce, Joby Boxall
International Conference on Hydroinformatics
Access to safe drinking water is universally considered as a fundamental human right and customers regard a reliable supply of safe, clean water as the most important aspect of the water supply service. However, water quality failures do occur, with some of the hardest to understand and manage occurring within distribution systems. In the UK, a regulatory process is applied in which water companies must report on significant water quality incidents, their causes, actions, responses, and outcomes. The Drinking Water Inspectorate (DWI) assesses these reports on an annual basis and their findings are made publically available. It is hypothesised here …
Benefits Of A Surveillance And Response System (Srs) Dashboard - The Philadelphia Water Department Experience, Yakir Hasit, John Vogtman
Benefits Of A Surveillance And Response System (Srs) Dashboard - The Philadelphia Water Department Experience, Yakir Hasit, John Vogtman
International Conference on Hydroinformatics
The Philadelphia Water Department (PWD) developed a comprehensive Surveillance and Response System (SRS) (formerly Contamination Warning System) for its drinking water system under a Water Security initiative grant from the U.S. Environmental Protection Agency. A full-scale SRS is comprised of four monitoring/surveillance components – online water quality monitoring (OWQM), enhanced security monitoring, consumer complaint surveillance, and public health surveillance, and two response components – consequence management and sampling and analysis. The integration of multiple information streams is a core element of an SRS. Taken separately, each surveillance component provides its own set of event triggers that have value for event …
Uncertainty Assessment Of The Integrated Hydrological Ensemble Prediction System Designed For The Nattai River Catchment, Agnes Sakal, James E. Ball, Douglas Graham, Alan Seed
Uncertainty Assessment Of The Integrated Hydrological Ensemble Prediction System Designed For The Nattai River Catchment, Agnes Sakal, James E. Ball, Douglas Graham, Alan Seed
International Conference on Hydroinformatics
An integrated hydrological ensemble prediction system (IHEPS) is providing a probabilistic assessment of future stream flow predicitons replacing the traditional forecasting method of a single deterministic flow forecast. The ensemble forecasting system includes multi model approaches where the hydrological forecasts model is driven by weather prediction model outputs to generate an ensemble stream flow forecast predictions. The performance of the IHEP systems intent to increase the credibility of the stream flow forecast predictions at the point of interest. However, quality of the stream flow forecast predictions are influenced by uncertainties originated from various sources in the forecasting chain. This paper …
Sustainability Of Dual Water Distribution Systems For Fire Flow Condition, Nazli Yonca Aydin, Larry Mays, Theo G. Schmitt
Sustainability Of Dual Water Distribution Systems For Fire Flow Condition, Nazli Yonca Aydin, Larry Mays, Theo G. Schmitt
International Conference on Hydroinformatics
The objective of this study is to compare the sustainability of current water systems when a dual water distribution system (WDS) is used for the non-potable water purposes of fire protection, irrigation, and toilet flushing. Sustainability of urban WDS is evaluated in terms of hydraulic efficiency and water quality. The first step is to assess sustainability of an example urban WDS by using sustainability index (SI). The SI is measured by reliability, resiliency, and vulnerability performance indices. Pressure and water age are selected as main parameters to determine sustainability. Once the SIs for pressure and water age are calculated by …
Effective Data Management Enables Intelligent Utility Management, Gary L.S. Wong
Effective Data Management Enables Intelligent Utility Management, Gary L.S. Wong
International Conference on Hydroinformatics
Instrumentation and automation plays a vital role to managing the water industry. These systems generate vast amounts of data that must be effectively managed in order to enable intelligent decision making. Time series data management software, commonly known as data historians are used for collecting and managing real-time (time series) information. More advanced software solutions provide a data infrastructure or utility wide Operations Data Management System (ODMS) that stores, manages, calculates, displays, shares, and integrates data from multiple disparate automation and business systems that are used daily in water utilities. These ODMS solutions are proven and have the ability to …
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
International Conference on Hydroinformatics
Monitoring devices installed in a huge system like a water network imply a high cost. This cost includes installation and maintenance. Thus the placement of these devices must be optimal. The optimal sensor placement is an issue that comes up in many innovation projects in water networks. The use of models even if the final application does not use them may be crucial in such process. Nevertheless the optimality of the placement may depend highly on the final use of these sensors. In general a better placement may imply a more specific use of the information. This work studies the …
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
Demands are one of the most uncertain parameters in a water distribution network model. A good calibration of the model demands leads to better solutions when using the model for any purpose. A demand pattern calibration methodology that uses a priori information has been developed for calibrating the behaviour of demand groups. Generally, the behaviours of demands in cities are mixed all over the network, contrary to smaller villages where demands are clearly sectorised in residential neighbourhoods, commercial zones and industrial sectors. Demand pattern calibration has a final use for leakage detection and isolation. Detecting a leakage in a pattern …
Adaptive Modeling Of Water Supply Networks For Improved Practical Applicability Of Hydraulic Online-Simulation, Jochen W. Deuerlein, Idel Montalvo Arango, Olivier A. Piller, Hervé Ung, Denis Gilbert
Adaptive Modeling Of Water Supply Networks For Improved Practical Applicability Of Hydraulic Online-Simulation, Jochen W. Deuerlein, Idel Montalvo Arango, Olivier A. Piller, Hervé Ung, Denis Gilbert
International Conference on Hydroinformatics
Online-Simulation of water distribution networks allows for estimating the current state of the entire network in near real-time. Measurement data coming from sensors at selected positions in the real network are used for driving a mathematical simulation model. Therefore the information gained from the measurements is extended and covers the whole system. As part of online monitoring or decision support systems online-simulations have multiple applications in operations and control of water supply networks. Although sensors and techniques for data transfer as well as mathematical simulation techniques are highly developed the practical applicability of online-simulations for decision support in large networks …
Towards A Decision Support System For Consequence Analysis Of Flooding On Critical Infrastructure, Andreas Burzel, Micheline Hounjet, Bernhard P.J. Becker, Antonio Di Pietro, Maurizio Pollino, Vittorio Rosato, Alberto Tofani
Towards A Decision Support System For Consequence Analysis Of Flooding On Critical Infrastructure, Andreas Burzel, Micheline Hounjet, Bernhard P.J. Becker, Antonio Di Pietro, Maurizio Pollino, Vittorio Rosato, Alberto Tofani
International Conference on Hydroinformatics
The flooding of the rivers Danube and Elbe caused: dozens of deaths; damaged bridges, streets, dams, railway lines and houses; outages of electrical power, drinking water supply, fixed and mobile telecommunication, water level gauges and purification plants; and crop shortfall. The analysis of the events and emergency response actions exposed flaws in preparedness and the understanding of emergency responders of the need to protect critical infrastructure. For instance, water level gauges failed, flood models for extreme amounts of water were flawed, emergency call numbers became unreachable and first responders could not communicate. As a consequence, protection and evacuation measures could …
Evaluating And Optimizing Sustainable Drainage Design To Maximize Multiple Benefits: Case Studies In China, Jo-Fai Chow, Dragan A. Savić, David Fortune, Zoran Kapelan, Netsanet Mebrate
Evaluating And Optimizing Sustainable Drainage Design To Maximize Multiple Benefits: Case Studies In China, Jo-Fai Chow, Dragan A. Savić, David Fortune, Zoran Kapelan, Netsanet Mebrate
International Conference on Hydroinformatics
In the past, the focus of drainage design was on sizing pipes and storages in order to provide sufficient network capacity. This traditional approach, together with computer software and technical guidance, had been successful for many years. However, due to rapid population growth and urbanisation, the requirements of a “good” drainage design have also changed significantly. In addition to water management, other aspects such as environmental impacts, amenity values and carbon footprint have to be considered during the design process. Going forward, we need to address the key sustainability issues carefully and practically. The key challenge of moving from simple …
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
The availability of a good hydraulic model increases the reliability of the results of methodologies using it. Thus the calibration of the model is a previous step that has to be done. The most uncertain parameters of the model are demands due to their constant variability. However, calibrating these demands requires a high computational cost that can be reduced by redefining the unknown parameters from demands to demand patterns. Besides, the number and location of the used sensors is highly correlated with the definition of such patterns. This paper presents a methodology for parameterizing and selecting sensors using the information …
Development Of A Model-Based Decision Support System For Water Treatment In Smart Micro Water Grid, Hyeongrak Cho, Jungwoo Jung, Sangho Lee, Soo Kwen Chae
Development Of A Model-Based Decision Support System For Water Treatment In Smart Micro Water Grid, Hyeongrak Cho, Jungwoo Jung, Sangho Lee, Soo Kwen Chae
International Conference on Hydroinformatics
Micro water grid (MWG) is an emerging concept for decentralized water management system for residential, industrial, commercial, and institutional buildings. MWG achieves specific local goals, such as reliability, diversification of water sources, and cost reduction. Unlike micro electricity grid, MWG has not been well-established, leading to a problem of initial design and operation. Thus, a MWG system requires a “smart” infrastructure that allows autonomous control and regulation. In this study, a decision support system (DSS) was designed to select optimum combinations of water treatment unit processes in MWG. To begin, key questions on water treatment in MWG systems were identified. …
Decision Support Systems And Promoting Socially Just Environmental Management, Te Kipa Kepa Brian Morgan, Tumanako Ngawhika F`Aui
Decision Support Systems And Promoting Socially Just Environmental Management, Te Kipa Kepa Brian Morgan, Tumanako Ngawhika F`Aui
International Conference on Hydroinformatics
The Mauri Model DMF is unique in its approach to the management of water resources as the framework offers a transparent and inclusive approach to considering the environmental, economic, social and cultural aspects of the decisions being contemplated. The Mauri Model DMF is unique because it is capable of including multiple-worldviews and adopts mauri (intrinsic value or well-being) in the place of the more common monetised assessments of pseudo sustainability using Cost Benefit Analysis. The Mauri Model DMF uses a two stage process that first identifies participants’ worldviews and inherent bias regarding water resource management, and then facilitates transparent assessment …